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3
4 @ARTICLE{Torre2003,
5 author = {J. G. {de la Torre} and H. E. Sanchez and A. Ortega and J. G. Hernandez
6 and M. X. Fernandes and F. G. Diaz and M. C. L. Martinez},
7 title = {Calculation of the solution properties of flexible macromolecules:
8 methods and applications},
9 journal = {European Biophysics Journal with Biophysics Letters},
10 year = {2003},
11 volume = {32},
12 pages = {477-486},
13 number = {5},
14 month = {Aug},
15 abstract = {While the prediction of hydrodynamic properties of rigid particles
16 is nowadays feasible using simple and efficient computer programs,
17 the calculation of such properties and, in general, the dynamic
18 behavior of flexible macromolecules has not reached a similar situation.
19 Although the theories are available, usually the computational work
20 is done using solutions specific for each problem. We intend to
21 develop computer programs that would greatly facilitate the task
22 of predicting solution behavior of flexible macromolecules. In this
23 paper, we first present an overview of the two approaches that are
24 most practical: the Monte Carlo rigid-body treatment, and the Brownian
25 dynamics simulation technique. The Monte Carlo procedure is based
26 on the calculation of properties for instantaneous conformations
27 of the macromolecule that are regarded as if they were instantaneously
28 rigid. We describe how a Monte Carlo program can be interfaced to
29 the programs in the HYDRO suite for rigid particles, and provide
30 an example of such calculation, for a hypothetical particle: a protein
31 with two domains connected by a flexible linker. We also describe
32 briefly the essentials of Brownian dynamics, and propose a general
33 mechanical model that includes several kinds of intramolecular interactions,
34 such as bending, internal rotation, excluded volume effects, etc.
35 We provide an example of the application of this methodology to
36 the dynamics of a semiflexible, wormlike DNA.},
37 annote = {724XK Times Cited:6 Cited References Count:64},
38 issn = {0175-7571},
39 uri = {<Go to ISI>://000185513400011},
40 }
41
42 @ARTICLE{Alakent2005,
43 author = {B. Alakent and M. C. Camurdan and P. Doruker},
44 title = {Hierarchical structure of the energy landscape of proteins revisited
45 by time series analysis. II. Investigation of explicit solvent effects},
46 journal = {Journal of Chemical Physics},
47 year = {2005},
48 volume = {123},
49 pages = {-},
50 number = {14},
51 month = {Oct 8},
52 abstract = {Time series analysis tools are employed on the principal modes obtained
53 from the C-alpha trajectories from two independent molecular-dynamics
54 simulations of alpha-amylase inhibitor (tendamistat). Fluctuations
55 inside an energy minimum (intraminimum motions), transitions between
56 minima (interminimum motions), and relaxations in different hierarchical
57 energy levels are investigated and compared with those encountered
58 in vacuum by using different sampling window sizes and intervals.
59 The low-frequency low-indexed mode relationship, established in
60 vacuum, is also encountered in water, which shows the reliability
61 of the important dynamics information offered by principal components
62 analysis in water. It has been shown that examining a short data
63 collection period (100 ps) may result in a high population of overdamped
64 modes, while some of the low-frequency oscillations (< 10 cm(-1))
65 can be captured in water by using a longer data collection period
66 (1200 ps). Simultaneous analysis of short and long sampling window
67 sizes gives the following picture of the effect of water on protein
68 dynamics. Water makes the protein lose its memory: future conformations
69 are less dependent on previous conformations due to the lowering
70 of energy barriers in hierarchical levels of the energy landscape.
71 In short-time dynamics (< 10 ps), damping factors extracted from
72 time series model parameters are lowered. For tendamistat, the friction
73 coefficient in the Langevin equation is found to be around 40-60
74 cm(-1) for the low-indexed modes, compatible with literature. The
75 fact that water has increased the friction and that on the other
76 hand has lubrication effect at first sight contradicts. However,
77 this comes about because water enhances the transitions between
78 minima and forces the protein to reduce its already inherent inability
79 to maintain oscillations observed in vacuum. Some of the frequencies
80 lower than 10 cm(-1) are found to be overdamped, while those higher
81 than 20 cm(-1) are slightly increased. As for the long-time dynamics
82 in water, it is found that random-walk motion is maintained for
83 approximately 200 ps (about five times of that in vacuum) in the
84 low-indexed modes, showing the lowering of energy barriers between
85 the higher-level minima.},
86 annote = {973OH Times Cited:1 Cited References Count:33},
87 issn = {0021-9606},
88 uri = {<Go to ISI>://000232532000064},
89 }
90
91 @BOOK{Allen1987,
92 title = {Computer Simulations of Liquids},
93 publisher = {Oxford University Press},
94 year = {1987},
95 author = {M.~P. Allen and D.~J. Tildesley},
96 address = {New York},
97 }
98
99 @ARTICLE{Allison1991,
100 author = {S. A. Allison},
101 title = {A Brownian Dynamics Algorithm for Arbitrary Rigid Bodies - Application
102 to Polarized Dynamic Light-Scattering},
103 journal = {Macromolecules},
104 year = {1991},
105 volume = {24},
106 pages = {530-536},
107 number = {2},
108 month = {Jan 21},
109 abstract = {A Brownian dynamics algorithm is developed to simulate dynamics experiments
110 of rigid macromolecules. It is applied to polarized dynamic light
111 scattering from rodlike sturctures and from a model of a DNA fragment
112 (762 base pairs). A number of rod cases are examined in which the
113 translational anisotropy is increased form zero to a large value.
114 Simulated first cumulants as well as amplitudes and lifetimes of
115 the dynamic form factor are compared with predictions of analytic
116 theories and found to be in very good agreement with them. For DNA
117 fragments 762 base pairs in length or longer, translational anisotropy
118 does not contribute significantly to dynamic light scattering. In
119 a comparison of rigid and flexible simulations on semistiff models
120 of this fragment, it is shown directly that flexing contributes
121 to the faster decay processes probed by light scattering and that
122 the flexible model studies are in good agreement with experiment.},
123 annote = {Eu814 Times Cited:8 Cited References Count:32},
124 issn = {0024-9297},
125 uri = {<Go to ISI>://A1991EU81400029},
126 }
127
128 @ARTICLE{Andersen1983,
129 author = {H. C. Andersen},
130 title = {Rattle - a Velocity Version of the Shake Algorithm for Molecular-Dynamics
131 Calculations},
132 journal = {Journal of Computational Physics},
133 year = {1983},
134 volume = {52},
135 pages = {24-34},
136 number = {1},
137 annote = {Rq238 Times Cited:559 Cited References Count:14},
138 issn = {0021-9991},
139 uri = {<Go to ISI>://A1983RQ23800002},
140 }
141
142 @ARTICLE{Auerbach2005,
143 author = {A. Auerbach},
144 title = {Gating of acetylcholine receptor channels: Brownian motion across
145 a broad transition state},
146 journal = {Proceedings of the National Academy of Sciences of the United States
147 of America},
148 year = {2005},
149 volume = {102},
150 pages = {1408-1412},
151 number = {5},
152 month = {Feb 1},
153 abstract = {Acetylcholine receptor channels (AChRs) are proteins that switch between
154 stable #closed# and #open# conformations. In patch clamp recordings,
155 diliganded AChR gating appears to be a simple, two-state reaction.
156 However, mutagenesis studies indicate that during gating dozens
157 of residues across the protein move asynchronously and are organized
158 into rigid body gating domains (#blocks#). Moreover, there is an
159 upper limit to the apparent channel opening rate constant. These
160 observations suggest that the gating reaction has a broad, corrugated
161 transition state region, with the maximum opening rate reflecting,
162 in part, the mean first-passage time across this ensemble. Simulations
163 reveal that a flat, isotropic energy profile for the transition
164 state can account for many of the essential features of AChR gating.
165 With this mechanism, concerted, local structural transitions that
166 occur on the broad transition state ensemble give rise to fractional
167 measures of reaction progress (Phi values) determined by rate-equilibrium
168 free energy relationship analysis. The results suggest that the
169 coarse-grained AChR gating conformational change propagates through
170 the protein with dynamics that are governed by the Brownian motion
171 of individual gating blocks.},
172 annote = {895QF Times Cited:9 Cited References Count:33},
173 issn = {0027-8424},
174 uri = {<Go to ISI>://000226877300030},
175 }
176
177 @ARTICLE{Baber1995,
178 author = {J. Baber and J. F. Ellena and D. S. Cafiso},
179 title = {Distribution of General-Anesthetics in Phospholipid-Bilayers Determined
180 Using H-2 Nmr and H-1-H-1 Noe Spectroscopy},
181 journal = {Biochemistry},
182 year = {1995},
183 volume = {34},
184 pages = {6533-6539},
185 number = {19},
186 month = {May 16},
187 abstract = {The effect of the general anesthetics halothane, enflurane, and isoflurane
188 on hydrocarbon chain packing in palmitoyl(d(31))oleoylphosphatidylcholine
189 membranes in the liquid crystalline phase was investigated using
190 H-2 NMR. Upon the addition of the anesthetics, the first five methylene
191 units near the interface generally show a very small increase in
192 segmental order, while segments deeper within the bilayer show a
193 small decrease in segmental order. From the H-2 NMR results, the
194 chain length for the perdeuterated palmitoyl chain in the absence
195 of anesthetic was found to be 12.35 Angstrom. Upon the addition
196 of halothane enflurane, or isoflurane, the acyl chain undergoes
197 slight contractions of 0.11, 0.20, or 0.16 Angstrom, respectively,
198 at 50 mol % anesthetic. A simple model was used to estimate the
199 relative amounts of anesthetic located near the interface and deeper
200 in the bilayer hydrocarbon region, and only a slight preference
201 for an interfacial location was observed. Intermolecular H-1-H-1
202 nuclear Overhauser effects (NOEs) were measured between phospholipid
203 and halothane protons. These NOEs are consistent with the intramembrane
204 location of the anesthetics suggested by the H-2 NMR data. In addition,
205 the NOE data indicate that anesthetics prefer the interfacial and
206 hydrocarbon regions of the membrane and are not found in high concentrations
207 in the phospholipid headgroup.},
208 annote = {Qz716 Times Cited:38 Cited References Count:37},
209 issn = {0006-2960},
210 uri = {<Go to ISI>://A1995QZ71600035},
211 }
212
213 @ARTICLE{Banerjee2004,
214 author = {D. Banerjee and B. C. Bag and S. K. Banik and D. S. Ray},
215 title = {Solution of quantum Langevin equation: Approximations, theoretical
216 and numerical aspects},
217 journal = {Journal of Chemical Physics},
218 year = {2004},
219 volume = {120},
220 pages = {8960-8972},
221 number = {19},
222 month = {May 15},
223 abstract = {Based on a coherent state representation of noise operator and an
224 ensemble averaging procedure using Wigner canonical thermal distribution
225 for harmonic oscillators, a generalized quantum Langevin equation
226 has been recently developed [Phys. Rev. E 65, 021109 (2002); 66,
227 051106 (2002)] to derive the equations of motion for probability
228 distribution functions in c-number phase-space. We extend the treatment
229 to explore several systematic approximation schemes for the solutions
230 of the Langevin equation for nonlinear potentials for a wide range
231 of noise correlation, strength and temperature down to the vacuum
232 limit. The method is exemplified by an analytic application to harmonic
233 oscillator for arbitrary memory kernel and with the help of a numerical
234 calculation of barrier crossing, in a cubic potential to demonstrate
235 the quantum Kramers' turnover and the quantum Arrhenius plot. (C)
236 2004 American Institute of Physics.},
237 annote = {816YY Times Cited:8 Cited References Count:35},
238 issn = {0021-9606},
239 uri = {<Go to ISI>://000221146400009},
240 }
241
242 @ARTICLE{Barojas1973,
243 author = {J. Barojas and D. Levesque},
244 title = {Simulation of Diatomic Homonuclear Liquids},
245 journal = {Phys. Rev. A},
246 year = {1973},
247 volume = {7},
248 pages = {1092-1105},
249 }
250
251 @ARTICLE{Barth1998,
252 author = {E. Barth and T. Schlick},
253 title = {Overcoming stability limitations in biomolecular dynamics. I. Combining
254 force splitting via extrapolation with Langevin dynamics in LN},
255 journal = {Journal of Chemical Physics},
256 year = {1998},
257 volume = {109},
258 pages = {1617-1632},
259 number = {5},
260 month = {Aug 1},
261 abstract = {We present an efficient new method termed LN for propagating biomolecular
262 dynamics according to the Langevin equation that arose fortuitously
263 upon analysis of the range of harmonic validity of our normal-mode
264 scheme LIN. LN combines force linearization with force splitting
265 techniques and disposes of LIN'S computationally intensive minimization
266 (anharmonic correction) component. Unlike the competitive multiple-timestepping
267 (MTS) schemes today-formulated to be symplectic and time-reversible-LN
268 merges the slow and fast forces via extrapolation rather than impulses;
269 the Langevin heat bath prevents systematic energy drifts. This combination
270 succeeds in achieving more significant speedups than these MTS methods
271 which are Limited by resonance artifacts to an outer timestep less
272 than some integer multiple of half the period of the fastest motion
273 (around 4-5 fs for biomolecules). We show that LN achieves very
274 good agreement with small-timestep solutions of the Langevin equation
275 in terms of thermodynamics (energy means and variances), geometry,
276 and dynamics (spectral densities) for two proteins in vacuum and
277 a large water system. Significantly, the frequency of updating the
278 slow forces extends to 48 fs or more, resulting in speedup factors
279 exceeding 10. The implementation of LN in any program that employs
280 force-splitting computations is straightforward, with only partial
281 second-derivative information required, as well as sparse Hessian/vector
282 multiplication routines. The linearization part of LN could even
283 be replaced by direct evaluation of the fast components. The application
284 of LN to biomolecular dynamics is well suited for configurational
285 sampling, thermodynamic, and structural questions. (C) 1998 American
286 Institute of Physics.},
287 annote = {105HH Times Cited:29 Cited References Count:49},
288 issn = {0021-9606},
289 uri = {<Go to ISI>://000075066300006},
290 }
291
292 @ARTICLE{Batcho2001,
293 author = {P. F. Batcho and T. Schlick},
294 title = {Special stability advantages of position-Verlet over velocity-Verlet
295 in multiple-time step integration},
296 journal = {Journal of Chemical Physics},
297 year = {2001},
298 volume = {115},
299 pages = {4019-4029},
300 number = {9},
301 month = {Sep 1},
302 abstract = {We present an analysis for a simple two-component harmonic oscillator
303 that compares the use of position-Verlet to velocity-Verlet for
304 multiple-time step integration. The numerical stability analysis
305 based on the impulse-Verlet splitting shows that position-Verlet
306 has enhanced stability, in terms of the largest allowable time step,
307 for cases where an ample separation of time scales exists. Numerical
308 investigations confirm the advantages of the position-Verlet scheme
309 when used for the fastest time scales of the system. Applications
310 to a biomolecule. a solvated protein, for both Newtonian and Langevin
311 dynamics echo these trends over large outer time-step regimes. (C)
312 2001 American Institute of Physics.},
313 annote = {469KV Times Cited:6 Cited References Count:30},
314 issn = {0021-9606},
315 uri = {<Go to ISI>://000170813800005},
316 }
317
318 @ARTICLE{Bates2005,
319 author = {M. A. Bates and G. R. Luckhurst},
320 title = {Biaxial nematic phases and V-shaped molecules: A Monte Carlo simulation
321 study},
322 journal = {Physical Review E},
323 year = {2005},
324 volume = {72},
325 pages = {-},
326 number = {5},
327 month = {Nov},
328 abstract = {Inspired by recent claims that compounds composed of V-shaped molecules
329 can exhibit the elusive biaxial nematic phase, we have developed
330 a generic simulation model for such systems. This contains the features
331 of the molecule that are essential to its liquid crystal behavior,
332 namely the anisotropies of the two arms and the angle between them.
333 The behavior of the model has been investigated using Monte Carlo
334 simulations for a wide range of these structural parameters. This
335 allows us to establish the relationship between the V-shaped molecule
336 and its ability to form a biaxial nematic phase. Of particular importance
337 are the criteria of geometry and the relative anisotropy necessary
338 for the system to exhibit a Landau point, at which the biaxial nematic
339 is formed directly from the isotropic phase. The simulations have
340 also been used to determine the orientational order parameters for
341 a selection of molecular axes. These are especially important because
342 they reveal the phase symmetry and are connected to the experimental
343 determination of this. The simulation results show that, whereas
344 some positions are extremely sensitive to the phase biaxiality,
345 others are totally blind to this.},
346 annote = {Part 1 988LQ Times Cited:0 Cited References Count:38},
347 issn = {1539-3755},
348 uri = {<Go to ISI>://000233603100030},
349 }
350
351 @ARTICLE{Beard2003,
352 author = {D. A. Beard and T. Schlick},
353 title = {Unbiased rotational moves for rigid-body dynamics},
354 journal = {Biophysical Journal},
355 year = {2003},
356 volume = {85},
357 pages = {2973-2976},
358 number = {5},
359 month = {Nov 1},
360 abstract = {We introduce an unbiased protocol for performing rotational moves
361 in rigid-body dynamics simulations. This approach - based on the
362 analytic solution for the rotational equations of motion for an
363 orthogonal coordinate system at constant angular velocity - removes
364 deficiencies that have been largely ignored in Brownian dynamics
365 simulations, namely errors for finite rotations that result from
366 applying the noncommuting rotational matrices in an arbitrary order.
367 Our algorithm should thus replace standard approaches to rotate
368 local coordinate frames in Langevin and Brownian dynamics simulations.},
369 annote = {736UA Times Cited:0 Cited References Count:11},
370 issn = {0006-3495},
371 uri = {<Go to ISI>://000186190500018},
372 }
373
374 @ARTICLE{Beloborodov1998,
375 author = {I. S. Beloborodov and V. Y. Orekhov and A. S. Arseniev},
376 title = {Effect of coupling between rotational and translational Brownian
377 motions on NMR spin relaxation: Consideration using green function
378 of rigid body diffusion},
379 journal = {Journal of Magnetic Resonance},
380 year = {1998},
381 volume = {132},
382 pages = {328-329},
383 number = {2},
384 month = {Jun},
385 abstract = {Using the Green function of arbitrary rigid Brownian diffusion (Goldstein,
386 Biopolymers 33, 409-436, 1993), it was analytically shown that coupling
387 between translation and rotation diffusion degrees of freedom does
388 not affect the correlation functions relevant to the NMR intramolecular
389 relaxation. It follows that spectral densities usually used for
390 the anisotropic rotation diffusion (Woessner, J. Chem. Phys. 37,
391 647-654, 1962) can be regarded as exact in respect to the rotation-translation
392 coupling for the spin system connected with a rigid body. (C) 1998
393 Academic Press.},
394 annote = {Zu605 Times Cited:2 Cited References Count:6},
395 issn = {1090-7807},
396 uri = {<Go to ISI>://000074214800017},
397 }
398
399 @ARTICLE{Berardi1996,
400 author = {R. Berardi and S. Orlandi and C. Zannoni},
401 title = {Antiphase structures in polar smectic liquid crystals and their molecular
402 origin},
403 journal = {Chemical Physics Letters},
404 year = {1996},
405 volume = {261},
406 pages = {357-362},
407 number = {3},
408 month = {Oct 18},
409 abstract = {We demonstrate that the overall molecular dipole organization in a
410 smectic liquid crystal formed of polar molecules can be strongly
411 influenced by the position of the dipole in the molecule. We study
412 by large scale Monte Carlo simulations systems of attractive-repulsive
413 ''Gay-Berne'' elongated ellipsoids with an axial dipole at the center
414 or near the end of the molecule and we show that monolayer smectic
415 liquid crystals and modulated antiferroelectric bilayer stripe domains
416 similar to the experimentally observed ''antiphase'' structures
417 are obtained in the two cases.},
418 annote = {Vn637 Times Cited:49 Cited References Count:26},
419 issn = {0009-2614},
420 uri = {<Go to ISI>://A1996VN63700023},
421 }
422
423 @ARTICLE{Berkov2005,
424 author = {D. V. Berkov and N. L. Gorn},
425 title = {Magnetization precession due to a spin-polarized current in a thin
426 nanoelement: Numerical simulation study},
427 journal = {Physical Review B},
428 year = {2005},
429 volume = {72},
430 pages = {-},
431 number = {9},
432 month = {Sep},
433 abstract = {In this paper a detailed numerical study (in frames of the Slonczewski
434 formalism) of magnetization oscillations driven by a spin-polarized
435 current through a thin elliptical nanoelement is presented. We show
436 that a sophisticated micromagnetic model, where a polycrystalline
437 structure of a nanoelement is taken into account, can explain qualitatively
438 all most important features of the magnetization oscillation spectra
439 recently observed experimentally [S. I. Kiselev , Nature 425, 380
440 (2003)], namely, existence of several equidistant spectral bands,
441 sharp onset and abrupt disappearance of magnetization oscillations
442 with increasing current, absence of the out-of-plane regime predicted
443 by a macrospin model, and the relation between frequencies of so-called
444 small-angle and quasichaotic oscillations. However, a quantitative
445 agreement with experimental results (especially concerning the frequency
446 of quasichaotic oscillations) could not be achieved in the region
447 of reasonable parameter values, indicating that further model refinement
448 is necessary for a complete understanding of the spin-driven magnetization
449 precession even in this relatively simple experimental situation.},
450 annote = {969IT Times Cited:2 Cited References Count:55},
451 issn = {1098-0121},
452 uri = {<Go to ISI>://000232228500058},
453 }
454
455 @ARTICLE{Berkov2005a,
456 author = {D. V. Berkov and N. L. Gorn},
457 title = {Stochastic dynamic simulations of fast remagnetization processes:
458 recent advances and applications},
459 journal = {Journal of Magnetism and Magnetic Materials},
460 year = {2005},
461 volume = {290},
462 pages = {442-448},
463 month = {Apr},
464 abstract = {Numerical simulations of fast remagnetization processes using stochastic
465 dynamics are widely used to study various magnetic systems. In this
466 paper, we first address several crucial methodological problems
467 of such simulations: (i) the influence of finite-element discretization
468 on simulated dynamics, (ii) choice between Ito and Stratonovich
469 stochastic calculi by the solution of micromagnetic stochastic equations
470 of motion and (iii) non-trivial correlation properties of the random
471 (thermal) field. Next, we discuss several examples to demonstrate
472 the great potential of the Langevin dynamics for studying fast remagnetization
473 processes in technically relevant applications: we present numerical
474 analysis of equilibrium magnon spectra in patterned structures,
475 study thermal noise effects on the magnetization dynamics of nanoelements
476 in pulsed fields and show some results for a remagnetization dynamics
477 induced by a spin-polarized current. (c) 2004 Elsevier B.V. All
478 rights reserved.},
479 annote = {Part 1 Sp. Iss. SI 922KU Times Cited:2 Cited References Count:25},
480 issn = {0304-8853},
481 uri = {<Go to ISI>://000228837600109},
482 }
483
484 @ARTICLE{Berkov2002,
485 author = {D. V. Berkov and N. L. Gorn and P. Gornert},
486 title = {Magnetization dynamics in nanoparticle systems: Numerical simulation
487 using Langevin dynamics},
488 journal = {Physica Status Solidi a-Applied Research},
489 year = {2002},
490 volume = {189},
491 pages = {409-421},
492 number = {2},
493 month = {Feb 16},
494 abstract = {We report on recent progress achieved by the development of numerical
495 methods based on the stochastic (Langevin) dynamics applied to systems
496 of interacting magnetic nanoparticles. The method enables direct
497 simulations of the trajectories of magnetic moments taking into
498 account (i) all relevant interactions, (ii) precession dynamics,
499 and (iii) temperature fluctuations included via the random (thermal)
500 field. We present several novel results obtained using new methods
501 developed for the solution of the Langevin equations. In particular,
502 we have investigated magnetic nanodots and disordered granular systems
503 of single-domain magnetic particles. For the first case we have
504 calculated the spectrum and the spatial distribution of spin excitations.
505 For the second system the complex ac susceptibility chi(omega, T)
506 for various particle concentrations and particle anisotropies were
507 computed and compared with numerous experimental results.},
508 annote = {526TF Times Cited:4 Cited References Count:37},
509 issn = {0031-8965},
510 uri = {<Go to ISI>://000174145200026},
511 }
512
513 @ARTICLE{Bernal1980,
514 author = {J.M. Bernal and J. G. {de la Torre}},
515 title = {Transport Properties and Hydrodynamic Centers of Rigid Macromolecules
516 with Arbitrary Shape},
517 journal = {Biopolymers},
518 year = {1980},
519 volume = {19},
520 pages = {751-766},
521 }
522
523 @ARTICLE{Brunger1984,
524 author = {A. Brunger and C. L. Brooks and M. Karplus},
525 title = {Stochastic Boundary-Conditions for Molecular-Dynamics Simulations
526 of St2 Water},
527 journal = {Chemical Physics Letters},
528 year = {1984},
529 volume = {105},
530 pages = {495-500},
531 number = {5},
532 annote = {Sm173 Times Cited:143 Cited References Count:22},
533 issn = {0009-2614},
534 uri = {<Go to ISI>://A1984SM17300007},
535 }
536
537 @ARTICLE{Budd1999,
538 author = {C. J. Budd and G. J. Collins and W. Z. Huang and R. D. Russell},
539 title = {Self-similar numerical solutions of the porous-medium equation using
540 moving mesh methods},
541 journal = {Philosophical Transactions of the Royal Society of London Series
542 a-Mathematical Physical and Engineering Sciences},
543 year = {1999},
544 volume = {357},
545 pages = {1047-1077},
546 number = {1754},
547 month = {Apr 15},
548 abstract = {This paper examines a synthesis of adaptive mesh methods with the
549 use of symmetry to study a partial differential equation. In particular,
550 it considers methods which admit discrete self-similar solutions,
551 examining the convergence of these to the true self-similar solution
552 as well as their stability. Special attention is given to the nonlinear
553 diffusion equation describing flow in a porous medium.},
554 annote = {199EE Times Cited:4 Cited References Count:14},
555 issn = {1364-503X},
556 uri = {<Go to ISI>://000080466800005},
557 }
558
559 @ARTICLE{Camp1999,
560 author = {P. J. Camp and M. P. Allen and A. J. Masters},
561 title = {Theory and computer simulation of bent-core molecules},
562 journal = {Journal of Chemical Physics},
563 year = {1999},
564 volume = {111},
565 pages = {9871-9881},
566 number = {21},
567 month = {Dec 1},
568 abstract = {Fluids of hard bent-core molecules have been studied using theory
569 and computer simulation. The molecules are composed of two hard
570 spherocylinders, with length-to-breadth ratio L/D, joined by their
571 ends at an angle 180 degrees - gamma. For L/D = 2 and gamma = 0,10,20
572 degrees, the simulations show isotropic, nematic, smectic, and solid
573 phases. For L/D = 2 and gamma = 30 degrees, only isotropic, nematic,
574 and solid phases are in evidence, which suggests that there is a
575 nematic-smectic-solid triple point at an angle in the range 20 degrees
576 < gamma < 30 degrees. In all of the orientationally ordered fluid
577 phases the order is purely uniaxial. For gamma = 10 degrees and
578 20 degrees, at the studied densities, the solid is also uniaxially
579 ordered, whilst for gamma = 30 degrees the solid layers are biaxially
580 ordered. For L/D = 2 and gamma = 60 degrees and 90 degrees we find
581 no spontaneous orientational ordering. This is shown to be due to
582 the interlocking of dimer pairs which precludes alignment. We find
583 similar results for L/D = 9.5 and gamma = 72 degrees, where an isotropic-biaxial
584 nematic transition is predicted by Onsager theory. Simulations in
585 the biaxial nematic phase show it to be at least mechanically stable
586 with respect to the isotropic phase, however. We have compared the
587 quasi-exact simulation results in the isotropic phase with the predicted
588 equations of state from three theories: the virial expansion containing
589 the second and third virial coefficients; the Parsons-Lee equation
590 of state; an application of Wertheim's theory of associating fluids
591 in the limit of infinite attractive association energy. For all
592 of the molecule elongations and geometries we have simulated, the
593 Wertheim theory proved to be the most accurate. Interestingly, the
594 isotropic equation of state is virtually independent of the dimer
595 bond angle-a feature that is also reflected in the lack of variation
596 with angle of the calculated second and third virial coefficients.
597 (C) 1999 American Institute of Physics. [S0021-9606(99)50445-5].},
598 annote = {255TC Times Cited:24 Cited References Count:38},
599 issn = {0021-9606},
600 uri = {<Go to ISI>://000083685400056},
601 }
602
603 @ARTICLE{Care2005,
604 author = {C. M. Care and D. J. Cleaver},
605 title = {Computer simulation of liquid crystals},
606 journal = {Reports on Progress in Physics},
607 year = {2005},
608 volume = {68},
609 pages = {2665-2700},
610 number = {11},
611 month = {Nov},
612 abstract = {A review is presented of molecular and mesoscopic computer simulations
613 of liquid crystalline systems. Molecular simulation approaches applied
614 to such systems are described, and the key findings for bulk phase
615 behaviour are reported. Following this, recently developed lattice
616 Boltzmann approaches to the mesoscale modelling of nemato-dynanics
617 are reviewed. This paper concludes with a discussion of possible
618 areas for future development in this field.},
619 annote = {989TU Times Cited:2 Cited References Count:258},
620 issn = {0034-4885},
621 uri = {<Go to ISI>://000233697600004},
622 }
623
624 @ARTICLE{Carrasco1999,
625 author = {B. Carrasco and J. G. {de la Torre}},
626 title = {Hydrodynamic properties of rigid particles: Comparison of different
627 modeling and computational procedures},
628 journal = {Biophysical Journal},
629 year = {1999},
630 volume = {76},
631 pages = {3044-3057},
632 number = {6},
633 month = {Jun},
634 abstract = {The hydrodynamic properties of rigid particles are calculated from
635 models composed of spherical elements (beads) using theories developed
636 by Kirkwood, Bloomfield, and their coworkers. Bead models have usually
637 been built in such a way that the beads fill the volume occupied
638 by the particles. Sometimes the beads are few and of varying sizes
639 (bead models in the strict sense), and other times there are many
640 small beads (filling models). Because hydrodynamic friction takes
641 place at the molecular surface, another possibility is to use shell
642 models, as originally proposed by Bloomfield. In this work, we have
643 developed procedures to build models of the various kinds, and we
644 describe the theory and methods for calculating their hydrodynamic
645 properties, including approximate methods that may be needed to
646 treat models with a very large number of elements. By combining
647 the various possibilities of model building and hydrodynamic calculation,
648 several strategies can be designed. We have made a quantitative
649 comparison of the performance of the various strategies by applying
650 them to some test cases, for which the properties are known a priori.
651 We provide guidelines and computational tools for bead modeling.},
652 annote = {200TT Times Cited:46 Cited References Count:57},
653 issn = {0006-3495},
654 uri = {<Go to ISI>://000080556700016},
655 }
656
657 @ARTICLE{Chandra1999,
658 author = {A. Chandra and T. Ichiye},
659 title = {Dynamical properties of the soft sticky dipole model of water: Molecular
660 dynamics simulations},
661 journal = {Journal of Chemical Physics},
662 year = {1999},
663 volume = {111},
664 pages = {2701-2709},
665 number = {6},
666 month = {Aug 8},
667 abstract = {Dynamical properties of the soft sticky dipole (SSD) model of water
668 are calculated by means of molecular dynamics simulations. Since
669 this is not a simple point model, the forces and torques arising
670 from the SSD potential are derived here. Simulations are carried
671 out in the microcanonical ensemble employing the Ewald method for
672 the electrostatic interactions. Various time correlation functions
673 and dynamical quantities associated with the translational and rotational
674 motion of water molecules are evaluated and compared with those
675 of two other commonly used models of liquid water, namely the transferable
676 intermolecular potential-three points (TIP3P) and simple point charge/extended
677 (SPC/E) models, and also with experiments. The dynamical properties
678 of the SSD water model are found to be in good agreement with the
679 experimental results and appear to be better than the TIP3P and
680 SPC/E models in most cases, as has been previously shown for its
681 thermodynamic, structural, and dielectric properties. Also, molecular
682 dynamics simulations of the SSD model are found to run much faster
683 than TIP3P, SPC/E, and other multisite models. (C) 1999 American
684 Institute of Physics. [S0021-9606(99)51430-X].},
685 annote = {221EN Times Cited:14 Cited References Count:66},
686 issn = {0021-9606},
687 uri = {<Go to ISI>://000081711200038},
688 }
689
690 @ARTICLE{Channell1990,
691 author = {P. J. Channell and C. Scovel},
692 title = {Symplectic Integration of Hamiltonian-Systems},
693 journal = {Nonlinearity},
694 year = {1990},
695 volume = {3},
696 pages = {231-259},
697 number = {2},
698 month = {may},
699 annote = {Dk631 Times Cited:152 Cited References Count:34},
700 issn = {0951-7715},
701 uri = {<Go to ISI>://A1990DK63100001},
702 }
703
704 @ARTICLE{Chen2003,
705 author = {B. Chen and F. Solis},
706 title = {Explicit mixed finite order Runge-Kutta methods},
707 journal = {Applied Numerical Mathematics},
708 year = {2003},
709 volume = {44},
710 pages = {21-30},
711 number = {1-2},
712 month = {Jan},
713 abstract = {We investigate the asymptotic behavior of systems of nonlinear differential
714 equations and introduce a family of mixed methods from combinations
715 of explicit Runge-Kutta methods. These methods have better stability
716 behavior than traditional Runge-Kutta methods and generally extend
717 the range of validity of the calculated solutions. These methods
718 also give a way of determining if the numerical solutions are real
719 or spurious. Emphasis is put on examples coming from mathematical
720 models in ecology. (C) 2002 IMACS. Published by Elsevier Science
721 B.V. All rights reserved.},
722 annote = {633ZD Times Cited:0 Cited References Count:9},
723 issn = {0168-9274},
724 uri = {<Go to ISI>://000180314200002},
725 }
726
727 @ARTICLE{Cheung2004,
728 author = {D. L. Cheung and S. J. Clark and M. R. Wilson},
729 title = {Calculation of flexoelectric coefficients for a nematic liquid crystal
730 by atomistic simulation},
731 journal = {Journal of Chemical Physics},
732 year = {2004},
733 volume = {121},
734 pages = {9131-9139},
735 number = {18},
736 month = {Nov 8},
737 abstract = {Equilibrium molecular dynamics calculations have been performed for
738 the liquid crystal molecule n-4-(trans-4-n-pentylcyclohexyl)benzonitrile
739 (PCH5) using a fully atomistic model. Simulation data have been
740 obtained for a series of temperatures in the nematic phase. The
741 simulation data have been used to calculate the flexoelectric coefficients
742 e(s) and e(b) using the linear response formalism of Osipov and
743 Nemtsov [M. A. Osipov and V. B. Nemtsov, Sov. Phys. Crstallogr.
744 31, 125 (1986)]. The temperature and order parameter dependence
745 of e(s) and e(b) are examined, as are separate contributions from
746 different intermolecular interactions. Values of e(s) and e(b) calculated
747 from simulation are consistent with those found from experiment.
748 (C) 2004 American Institute of Physics.},
749 annote = {866UM Times Cited:4 Cited References Count:61},
750 issn = {0021-9606},
751 uri = {<Go to ISI>://000224798900053},
752 }
753
754 @ARTICLE{Cheung2002,
755 author = {D. L. Cheung and S. J. Clark and M. R. Wilson},
756 title = {Calculation of the rotational viscosity of a nematic liquid crystal},
757 journal = {Chemical Physics Letters},
758 year = {2002},
759 volume = {356},
760 pages = {140-146},
761 number = {1-2},
762 month = {Apr 15},
763 abstract = {Equilibrium molecular dynamics calculations have been performed for
764 the liquid crystal molecule n-4-(trans-4-npentylcyclohexyl)benzonitrile
765 (PCH5) using a fully atomistic model. Simulation data has been obtained
766 for a series of temperatures in the nematic phase. The rotational
767 viscosity co-efficient gamma(1), has been calculated using the angular
768 velocity correlation function of the nematic director, n, the mean
769 squared diffusion of n and statistical mechanical methods based
770 on the rotational diffusion co-efficient. We find good agreement
771 between the first two methods and experimental values. (C) 2002
772 Published by Elsevier Science B.V.},
773 annote = {547KF Times Cited:8 Cited References Count:31},
774 issn = {0009-2614},
775 uri = {<Go to ISI>://000175331000020},
776 }
777
778 @ARTICLE{Chin2004,
779 author = {S. A. Chin},
780 title = {Dynamical multiple-time stepping methods for overcoming resonance
781 instabilities},
782 journal = {Journal of Chemical Physics},
783 year = {2004},
784 volume = {120},
785 pages = {8-13},
786 number = {1},
787 month = {Jan 1},
788 abstract = {Current molecular dynamics simulations of biomolecules using multiple
789 time steps to update the slowly changing force are hampered by instabilities
790 beginning at time steps near the half period of the fastest vibrating
791 mode. These #resonance# instabilities have became a critical barrier
792 preventing the long time simulation of biomolecular dynamics. Attempts
793 to tame these instabilities by altering the slowly changing force
794 and efforts to damp them out by Langevin dynamics do not address
795 the fundamental cause of these instabilities. In this work, we trace
796 the instability to the nonanalytic character of the underlying spectrum
797 and show that a correct splitting of the Hamiltonian, which renders
798 the spectrum analytic, restores stability. The resulting Hamiltonian
799 dictates that in addition to updating the momentum due to the slowly
800 changing force, one must also update the position with a modified
801 mass. Thus multiple-time stepping must be done dynamically. (C)
802 2004 American Institute of Physics.},
803 annote = {757TK Times Cited:1 Cited References Count:22},
804 issn = {0021-9606},
805 uri = {<Go to ISI>://000187577400003},
806 }
807
808 @ARTICLE{Cook2000,
809 author = {M. J. Cook and M. R. Wilson},
810 title = {Simulation studies of dipole correlation in the isotropic liquid
811 phase},
812 journal = {Liquid Crystals},
813 year = {2000},
814 volume = {27},
815 pages = {1573-1583},
816 number = {12},
817 month = {Dec},
818 abstract = {The Kirkwood correlation factor g(1) determines the preference for
819 local parallel or antiparallel dipole association in the isotropic
820 phase. Calamitic mesogens with longitudinal dipole moments and Kirkwood
821 factors greater than 1 have an enhanced effective dipole moment
822 along the molecular long axis. This leads to higher values of Delta
823 epsilon in the nematic phase. This paper describes state-of-the-art
824 molecular dynamics simulations of two calamitic mesogens 4-(trans-4-n-pentylcyclohexyl)benzonitrile
825 (PCH5) and 4-(trans-4-n-pentylcyclohexyl) chlorobenzene (PCH5-Cl)
826 in the isotropic liquid phase using an all-atom force field and
827 taking long range electrostatics into account using an Ewald summation.
828 Using this methodology, PCH5 is seen to prefer antiparallel dipole
829 alignment with a negative g(1) and PCH5-Cl is seen to prefer parallel
830 dipole alignment with a positive g(1); this is in accordance with
831 experimental dielectric measurements. Analysis of the molecular
832 dynamics trajectories allows an assessment of why these molecules
833 behave differently.},
834 annote = {376BF Times Cited:10 Cited References Count:16},
835 issn = {0267-8292},
836 uri = {<Go to ISI>://000165437800002},
837 }
838
839 @ARTICLE{Cui2003,
840 author = {B. X. Cui and M. Y. Shen and K. F. Freed},
841 title = {Folding and misfolding of the papillomavirus E6 interacting peptide
842 E6ap},
843 journal = {Proceedings of the National Academy of Sciences of the United States
844 of America},
845 year = {2003},
846 volume = {100},
847 pages = {7087-7092},
848 number = {12},
849 month = {Jun 10},
850 abstract = {All-atom Langevin dynamics simulations have been performed to study
851 the folding pathways of the 18-residue binding domain fragment E6ap
852 of the human papillomavirus E6 interacting peptide. Six independent
853 folding trajectories, with a total duration of nearly 2 mus, all
854 lead to the same native state in which the E6ap adopts a fluctuating
855 a-helix structure in the central portion (Ser-4-Leu-13) but with
856 very flexible N and C termini. Simulations starting from different
857 core configurations exhibit the E6ap folding dynamics as either
858 a two- or three-state folder with an intermediate misfolded state.
859 The essential leucine hydrophobic core (Leu-9, Leu-12, and Leu-13)
860 is well conserved in the native-state structure but absent in the
861 intermediate structure, suggesting that the leucine core is not
862 only essential for the binding activity of E6ap but also important
863 for the stability of the native structure. The free energy landscape
864 reveals a significant barrier between the basins separating the
865 native and misfolded states. We also discuss the various underlying
866 forces that drive the peptide into its native state.},
867 annote = {689LC Times Cited:3 Cited References Count:48},
868 issn = {0027-8424},
869 uri = {<Go to ISI>://000183493500037},
870 }
871
872 @ARTICLE{Denisov2003,
873 author = {S. I. Denisov and T. V. Lyutyy and K. N. Trohidou},
874 title = {Magnetic relaxation in finite two-dimensional nanoparticle ensembles},
875 journal = {Physical Review B},
876 year = {2003},
877 volume = {67},
878 pages = {-},
879 number = {1},
880 month = {Jan 1},
881 abstract = {We study the slow phase of thermally activated magnetic relaxation
882 in finite two-dimensional ensembles of dipolar interacting ferromagnetic
883 nanoparticles whose easy axes of magnetization are perpendicular
884 to the distribution plane. We develop a method to numerically simulate
885 the magnetic relaxation for the case that the smallest heights of
886 the potential barriers between the equilibrium directions of the
887 nanoparticle magnetic moments are much larger than the thermal energy.
888 Within this framework, we analyze in detail the role that the correlations
889 of the nanoparticle magnetic moments and the finite size of the
890 nanoparticle ensemble play in magnetic relaxation.},
891 annote = {642XH Times Cited:11 Cited References Count:31},
892 issn = {1098-0121},
893 uri = {<Go to ISI>://000180830400056},
894 }
895
896 @ARTICLE{Derreumaux1998,
897 author = {P. Derreumaux and T. Schlick},
898 title = {The loop opening/closing motion of the enzyme triosephosphate isomerase},
899 journal = {Biophysical Journal},
900 year = {1998},
901 volume = {74},
902 pages = {72-81},
903 number = {1},
904 month = {Jan},
905 abstract = {To explore the origin of the large-scale motion of triosephosphate
906 isomerase's flexible loop (residues 166 to 176) at the active site,
907 several simulation protocols are employed both for the free enzyme
908 in vacuo and for the free enzyme with some solvent modeling: high-temperature
909 Langevin dynamics simulations, sampling by a #dynamics##driver#
910 approach, and potential-energy surface calculations. Our focus is
911 on obtaining the energy barrier to the enzyme's motion and establishing
912 the nature of the loop movement. Previous calculations did not determine
913 this energy barrier and the effect of solvent on the barrier. High-temperature
914 molecular dynamics simulations and crystallographic studies have
915 suggested a rigid-body motion with two hinges located at both ends
916 of the loop; Brownian dynamics simulations at room temperature pointed
917 to a very flexible behavior. The present simulations and analyses
918 reveal that although solute/solvent hydrogen bonds play a crucial
919 role in lowering the energy along the pathway, there still remains
920 a high activation barrier, This finding clearly indicates that,
921 if the loop opens and closes in the absence of a substrate at standard
922 conditions (e.g., room temperature, appropriate concentration of
923 isomerase), the time scale for transition is not in the nanosecond
924 but rather the microsecond range. Our results also indicate that
925 in the context of spontaneous opening in the free enzyme, the motion
926 is of rigid-body type and that the specific interaction between
927 residues Ala(176) and Tyr(208) plays a crucial role in the loop
928 opening/closing mechanism.},
929 annote = {Zl046 Times Cited:30 Cited References Count:29},
930 issn = {0006-3495},
931 uri = {<Go to ISI>://000073393400009},
932 }
933
934 @ARTICLE{Dullweber1997,
935 author = {A. Dullweber and B. Leimkuhler and R. McLachlan},
936 title = {Symplectic splitting methods for rigid body molecular dynamics},
937 journal = {Journal of Chemical Physics},
938 year = {1997},
939 volume = {107},
940 pages = {5840-5851},
941 number = {15},
942 month = {Oct 15},
943 abstract = {Rigid body molecular models possess symplectic structure and time-reversal
944 symmetry. Standard numerical integration methods destroy both properties,
945 introducing nonphysical dynamical behavior such as numerically induced
946 dissipative states and drift in the energy during long term simulations.
947 This article describes the construction, implementation, and practical
948 application of fast explicit symplectic-reversible integrators for
949 multiple rigid body molecular simulations, These methods use a reduction
950 to Euler equations for the free rigid body, together with a symplectic
951 splitting technique. In every time step, the orientational dynamics
952 of each rigid body is integrated by a sequence of planar rotations.
953 Besides preserving the symplectic and reversible structures of the
954 flow, this scheme accurately conserves the total angular momentum
955 of a system of interacting rigid bodies. Excellent energy conservation
956 fan be obtained relative to traditional methods, especially in long-time
957 simulations. The method is implemented in a research code, ORIENT
958 and compared with a quaternion/extrapolation scheme for the TIP4P
959 model of water. Our experiments show that the symplectic-reversible
960 scheme is far superior to the more traditional quaternion method.
961 (C) 1997 American Institute of Physics.},
962 annote = {Ya587 Times Cited:35 Cited References Count:32},
963 issn = {0021-9606},
964 uri = {<Go to ISI>://A1997YA58700024},
965 }
966
967 @ARTICLE{Edwards2005,
968 author = {S. A. Edwards and D. R. M. Williams},
969 title = {Stretching a single diblock copolymer in a selective solvent: Langevin
970 dynamics simulations},
971 journal = {Macromolecules},
972 year = {2005},
973 volume = {38},
974 pages = {10590-10595},
975 number = {25},
976 month = {Dec 13},
977 abstract = {Using the Langevin dynamics technique, we have carried out simulations
978 of a single-chain flexible diblock copolymer. The polymer consists
979 of two blocks of equal length, one very poorly solvated and the
980 other close to theta-conditions. We study what happens when such
981 a polymer is stretched, for a range of different stretching speeds,
982 and correlate our observations with features in the plot of force
983 vs extension. We find that at slow speeds this force profile does
984 not increase monotonically, in disagreement with earlier predictions,
985 and that at high speeds there is a strong dependence on which end
986 of the polymer is pulled, as well as a high level of hysteresis.},
987 annote = {992EC Times Cited:0 Cited References Count:13},
988 issn = {0024-9297},
989 uri = {<Go to ISI>://000233866200035},
990 }
991
992 @ARTICLE{Egberts1988,
993 author = {E. Egberts and H. J. C. Berendsen},
994 title = {Molecular-Dynamics Simulation of a Smectic Liquid-Crystal with Atomic
995 Detail},
996 journal = {Journal of Chemical Physics},
997 year = {1988},
998 volume = {89},
999 pages = {3718-3732},
1000 number = {6},
1001 month = {Sep 15},
1002 annote = {Q0188 Times Cited:219 Cited References Count:43},
1003 issn = {0021-9606},
1004 uri = {<Go to ISI>://A1988Q018800036},
1005 }
1006
1007 @ARTICLE{Ermak1978,
1008 author = {D. L. Ermak and J. A. Mccammon},
1009 title = {Brownian Dynamics with Hydrodynamic Interactions},
1010 journal = {Journal of Chemical Physics},
1011 year = {1978},
1012 volume = {69},
1013 pages = {1352-1360},
1014 number = {4},
1015 annote = {Fp216 Times Cited:785 Cited References Count:42},
1016 issn = {0021-9606},
1017 uri = {<Go to ISI>://A1978FP21600004},
1018 }
1019
1020 @ARTICLE{Fennell2004,
1021 author = {C. J. Fennell and J. D. Gezelter},
1022 title = {On the structural and transport properties of the soft sticky dipole
1023 and related single-point water models},
1024 journal = {Journal of Chemical Physics},
1025 year = {2004},
1026 volume = {120},
1027 pages = {9175-9184},
1028 number = {19},
1029 month = {May 15},
1030 abstract = {The density maximum and temperature dependence of the self-diffusion
1031 constant were investigated for the soft sticky dipole (SSD) water
1032 model and two related reparametrizations of this single-point model.
1033 A combination of microcanonical and isobaric-isothermal molecular
1034 dynamics simulations was used to calculate these properties, both
1035 with and without the use of reaction field to handle long-range
1036 electrostatics. The isobaric-isothermal simulations of the melting
1037 of both ice-I-h and ice-I-c showed a density maximum near 260 K.
1038 In most cases, the use of the reaction field resulted in calculated
1039 densities which were significantly lower than experimental densities.
1040 Analysis of self-diffusion constants shows that the original SSD
1041 model captures the transport properties of experimental water very
1042 well in both the normal and supercooled liquid regimes. We also
1043 present our reparametrized versions of SSD for use both with the
1044 reaction field or without any long-range electrostatic corrections.
1045 These are called the SSD/RF and SSD/E models, respectively. These
1046 modified models were shown to maintain or improve upon the experimental
1047 agreement with the structural and transport properties that can
1048 be obtained with either the original SSD or the density-corrected
1049 version of the original model (SSD1). Additionally, a novel low-density
1050 ice structure is presented which appears to be the most stable ice
1051 structure for the entire SSD family. (C) 2004 American Institute
1052 of Physics.},
1053 annote = {816YY Times Cited:5 Cited References Count:39},
1054 issn = {0021-9606},
1055 uri = {<Go to ISI>://000221146400032},
1056 }
1057
1058 @ARTICLE{Fernandes2002,
1059 author = {M. X. Fernandes and J. G. {de la Torre}},
1060 title = {Brownian dynamics simulation of rigid particles of arbitrary shape
1061 in external fields},
1062 journal = {Biophysical Journal},
1063 year = {2002},
1064 volume = {83},
1065 pages = {3039-3048},
1066 number = {6},
1067 month = {Dec},
1068 abstract = {We have developed a Brownian dynamics simulation algorithm to generate
1069 Brownian trajectories of an isolated, rigid particle of arbitrary
1070 shape in the presence of electric fields or any other external agents.
1071 Starting from the generalized diffusion tensor, which can be calculated
1072 with the existing HYDRO software, the new program BROWNRIG (including
1073 a case-specific subprogram for the external agent) carries out a
1074 simulation that is analyzed later to extract the observable dynamic
1075 properties. We provide a variety of examples of utilization of this
1076 method, which serve as tests of its performance, and also illustrate
1077 its applicability. Examples include free diffusion, transport in
1078 an electric field, and diffusion in a restricting environment.},
1079 annote = {633AD Times Cited:2 Cited References Count:43},
1080 issn = {0006-3495},
1081 uri = {<Go to ISI>://000180256300012},
1082 }
1083
1084 @ARTICLE{Gay1981,
1085 author = {J. G. Gay and B. J. Berne},
1086 title = {Modification of the Overlap Potential to Mimic a Linear Site-Site
1087 Potential},
1088 journal = {Journal of Chemical Physics},
1089 year = {1981},
1090 volume = {74},
1091 pages = {3316-3319},
1092 number = {6},
1093 annote = {Lj347 Times Cited:482 Cited References Count:13},
1094 issn = {0021-9606},
1095 uri = {<Go to ISI>://A1981LJ34700029},
1096 }
1097
1098 @ARTICLE{Gelin1999,
1099 author = {M. F. Gelin},
1100 title = {Inertial effects in the Brownian dynamics with rigid constraints},
1101 journal = {Macromolecular Theory and Simulations},
1102 year = {1999},
1103 volume = {8},
1104 pages = {529-543},
1105 number = {6},
1106 month = {Nov},
1107 abstract = {To investigate the influence of inertial effects on the dynamics of
1108 an assembly of beads subjected to rigid constraints and placed in
1109 a buffer medium, a convenient method to introduce suitable generalized
1110 coordinates is presented. Without any restriction on the nature
1111 of the soft forces involved (both stochastic and deterministic),
1112 pertinent Langevin equations are derived. Provided that the Brownian
1113 forces are Gaussian and Markovian, the corresponding Fokker-Planck
1114 equation (FPE) is obtained in the complete phase space of generalized
1115 coordinates and momenta. The correct short time behavior for correlation
1116 functions (CFs) of generalized coordinates is established, and the
1117 diffusion equation with memory (DEM) is deduced from the FPE in
1118 the high friction Limit. The DEM is invoked to perform illustrative
1119 calculations in two dimensions of the orientational CFs for once
1120 broken nonrigid rods immobilized on a surface. These calculations
1121 reveal that the CFs under certain conditions exhibit an oscillatory
1122 behavior, which is irreproducible within the standard diffusion
1123 equation. Several methods are considered for the approximate solution
1124 of the DEM, and their application to three dimensional DEMs is discussed.},
1125 annote = {257MM Times Cited:2 Cited References Count:82},
1126 issn = {1022-1344},
1127 uri = {<Go to ISI>://000083785700002},
1128 }
1129
1130 @BOOK{Goldstein2001,
1131 title = {Classical Mechanics},
1132 publisher = {Addison Wesley},
1133 year = {2001},
1134 author = {H. Goldstein and C. Poole and J. Safko},
1135 address = {San Francisco},
1136 edition = {3rd},
1137 }
1138
1139 @ARTICLE{Gray2003,
1140 author = {J. J. Gray and S. Moughon and C. Wang and O. Schueler-Furman and
1141 B. Kuhlman and C. A. Rohl and D. Baker},
1142 title = {Protein-protein docking with simultaneous optimization of rigid-body
1143 displacement and side-chain conformations},
1144 journal = {Journal of Molecular Biology},
1145 year = {2003},
1146 volume = {331},
1147 pages = {281-299},
1148 number = {1},
1149 month = {Aug 1},
1150 abstract = {Protein-protein docking algorithms provide a means to elucidate structural
1151 details for presently unknown complexes. Here, we present and evaluate
1152 a new method to predict protein-protein complexes from the coordinates
1153 of the unbound monomer components. The method employs a low-resolution,
1154 rigid-body, Monte Carlo search followed by simultaneous optimization
1155 of backbone displacement and side-chain conformations using Monte
1156 Carlo minimization. Up to 10(5) independent simulations are carried
1157 out, and the resulting #decoys# are ranked using an energy function
1158 dominated by van der Waals interactions, an implicit solvation model,
1159 and an orientation-dependent hydrogen bonding potential. Top-ranking
1160 decoys are clustered to select the final predictions. Small-perturbation
1161 studies reveal the formation of binding funnels in 42 of 54 cases
1162 using coordinates derived from the bound complexes and in 32 of
1163 54 cases using independently determined coordinates of one or both
1164 monomers. Experimental binding affinities correlate with the calculated
1165 score function and explain the predictive success or failure of
1166 many targets. Global searches using one or both unbound components
1167 predict at least 25% of the native residue-residue contacts in 28
1168 of the 32 cases where binding funnels exist. The results suggest
1169 that the method may soon be useful for generating models of biologically
1170 important complexes from the structures of the isolated components,
1171 but they also highlight the challenges that must be met to achieve
1172 consistent and accurate prediction of protein-protein interactions.
1173 (C) 2003 Elsevier Ltd. All rights reserved.},
1174 annote = {704QL Times Cited:48 Cited References Count:60},
1175 issn = {0022-2836},
1176 uri = {<Go to ISI>://000184351300022},
1177 }
1178
1179 @ARTICLE{Greengard1994,
1180 author = {L. Greengard},
1181 title = {Fast Algorithms for Classical Physics},
1182 journal = {Science},
1183 year = {1994},
1184 volume = {265},
1185 pages = {909-914},
1186 number = {5174},
1187 month = {Aug 12},
1188 abstract = {Some of the recently developed fast summation methods that have arisen
1189 in scientific computing are described. These methods require an
1190 amount of work proportional to N or N log N to evaluate all pairwise
1191 interactions in an ensemble of N particles. Traditional methods,
1192 by contrast, require an amount of work proportional to N-2. AS a
1193 result, large-scale simulations can be carried out using only modest
1194 computer resources. In combination with supercomputers, it is possible
1195 to address questions that were previously out of reach. Problems
1196 from diffusion, gravitation, and wave propagation are considered.},
1197 annote = {Pb499 Times Cited:99 Cited References Count:44},
1198 issn = {0036-8075},
1199 uri = {<Go to ISI>://A1994PB49900031},
1200 }
1201
1202 @ARTICLE{Greengard1987,
1203 author = {L. Greengard and V. Rokhlin},
1204 title = {A Fast Algorithm for Particle Simulations},
1205 journal = {Journal of Computational Physics},
1206 year = {1987},
1207 volume = {73},
1208 pages = {325-348},
1209 number = {2},
1210 month = {Dec},
1211 annote = {L0498 Times Cited:899 Cited References Count:7},
1212 issn = {0021-9991},
1213 uri = {<Go to ISI>://A1987L049800006},
1214 }
1215
1216 @ARTICLE{Hairer1997,
1217 author = {E. Hairer and C. Lubich},
1218 title = {The life-span of backward error analysis for numerical integrators},
1219 journal = {Numerische Mathematik},
1220 year = {1997},
1221 volume = {76},
1222 pages = {441-462},
1223 number = {4},
1224 month = {Jun},
1225 abstract = {Backward error analysis is a useful tool for the study of numerical
1226 approximations to ordinary differential equations. The numerical
1227 solution is formally interpreted as the exact solution of a perturbed
1228 differential equation, given as a formal and usually divergent series
1229 in powers of the step size. For a rigorous analysis, this series
1230 has to be truncated. In this article we study the influence of this
1231 truncation to the difference between the numerical solution and
1232 the exact solution of the perturbed differential equation. Results
1233 on the long-time behaviour of numerical solutions are obtained in
1234 this way. We present applications to the numerical phase portrait
1235 near hyperbolic equilibrium points, to asymptotically stable periodic
1236 orbits and Hopf bifurcation, and to energy conservation and approximation
1237 of invariant tori in Hamiltonian systems.},
1238 annote = {Xj488 Times Cited:50 Cited References Count:19},
1239 issn = {0029-599X},
1240 uri = {<Go to ISI>://A1997XJ48800002},
1241 }
1242
1243 @ARTICLE{Hao1993,
1244 author = {M. H. Hao and M. R. Pincus and S. Rackovsky and H. A. Scheraga},
1245 title = {Unfolding and Refolding of the Native Structure of Bovine Pancreatic
1246 Trypsin-Inhibitor Studied by Computer-Simulations},
1247 journal = {Biochemistry},
1248 year = {1993},
1249 volume = {32},
1250 pages = {9614-9631},
1251 number = {37},
1252 month = {Sep 21},
1253 abstract = {A new procedure for studying the folding and unfolding of proteins,
1254 with an application to bovine pancreatic trypsin inhibitor (BPTI),
1255 is reported. The unfolding and refolding of the native structure
1256 of the protein are characterized by the dimensions of the protein,
1257 expressed in terms of the three principal radii of the structure
1258 considered as an ellipsoid. A dynamic equation, describing the variations
1259 of the principal radii on the unfolding path, and a numerical procedure
1260 to solve this equation are proposed. Expanded and distorted conformations
1261 are refolded to the native structure by a dimensional-constraint
1262 energy minimization procedure. A unique and reproducible unfolding
1263 pathway for an intermediate of BPTI lacking the [30,51] disulfide
1264 bond is obtained. The resulting unfolded conformations are extended;
1265 they contain near-native local structure, but their longest principal
1266 radii are more than 2.5 times greater than that of the native structure.
1267 The most interesting finding is that the majority of expanded conformations,
1268 generated under various conditions, can be refolded closely to the
1269 native structure, as measured by the correct overall chain fold,
1270 by the rms deviations from the native structure of only 1.9-3.1
1271 angstrom, and by the energy differences of about 10 kcal/mol from
1272 the native structure. Introduction of the [30,51] disulfide bond
1273 at this stage, followed by minimization, improves the closeness
1274 of the refolded structures to the native structure, reducing the
1275 rms deviations to 0.9-2.0 angstrom. The unique refolding of these
1276 expanded structures over such a large conformational space implies
1277 that the folding is strongly dictated by the interactions in the
1278 amino acid sequence of BPTI. The simulations indicate that, under
1279 conditions that favor a compact structure as mimicked by the volume
1280 constraints in our algorithm; the expanded conformations have a
1281 strong tendency to move toward the native structure; therefore,
1282 they probably would be favorable folding intermediates. The results
1283 presented here support a general model for protein folding, i.e.,
1284 progressive formation of partially folded structural units, followed
1285 by collapse to the compact native structure. The general applicability
1286 of the procedure is also discussed.},
1287 annote = {Ly294 Times Cited:27 Cited References Count:57},
1288 issn = {0006-2960},
1289 uri = {<Go to ISI>://A1993LY29400014},
1290 }
1291
1292 @ARTICLE{Hinsen2000,
1293 author = {K. Hinsen and A. J. Petrescu and S. Dellerue and M. C. Bellissent-Funel
1294 and G. R. Kneller},
1295 title = {Harmonicity in slow protein dynamics},
1296 journal = {Chemical Physics},
1297 year = {2000},
1298 volume = {261},
1299 pages = {25-37},
1300 number = {1-2},
1301 month = {Nov 1},
1302 abstract = {The slow dynamics of proteins around its native folded state is usually
1303 described by diffusion in a strongly anharmonic potential. In this
1304 paper, we try to understand the form and origin of the anharmonicities,
1305 with the principal aim of gaining a better understanding of the
1306 principal motion types, but also in order to develop more efficient
1307 numerical methods for simulating neutron scattering spectra of large
1308 proteins. First, we decompose a molecular dynamics (MD) trajectory
1309 of 1.5 ns for a C-phycocyanin dimer surrounded by a layer of water
1310 into three contributions that we expect to be independent: the global
1311 motion of the residues, the rigid-body motion of the sidechains
1312 relative to the backbone, and the internal deformations of the sidechains.
1313 We show that they are indeed almost independent by verifying the
1314 factorization of the incoherent intermediate scattering function.
1315 Then, we show that the global residue motions, which include all
1316 large-scale backbone motions, can be reproduced by a simple harmonic
1317 model which contains two contributions: a short-time vibrational
1318 term, described by a standard normal mode calculation in a local
1319 minimum, and a long-time diffusive term, described by Brownian motion
1320 in an effective harmonic potential. The potential and the friction
1321 constants were fitted to the MD data. The major anharmonic contribution
1322 to the incoherent intermediate scattering function comes from the
1323 rigid-body diffusion of the sidechains. This model can be used to
1324 calculate scattering functions for large proteins and for long-time
1325 scales very efficiently, and thus provides a useful complement to
1326 MD simulations, which are best suited for detailed studies on smaller
1327 systems or for shorter time scales. (C) 2000 Elsevier Science B.V.
1328 All rights reserved.},
1329 annote = {Sp. Iss. SI 368MT Times Cited:16 Cited References Count:31},
1330 issn = {0301-0104},
1331 uri = {<Go to ISI>://000090121700003},
1332 }
1333
1334 @ARTICLE{Ho1992,
1335 author = {C. Ho and C. D. Stubbs},
1336 title = {Hydration at the Membrane Protein-Lipid Interface},
1337 journal = {Biophysical Journal},
1338 year = {1992},
1339 volume = {63},
1340 pages = {897-902},
1341 number = {4},
1342 month = {Oct},
1343 abstract = {Evidence has been found for the existence water at the protein-lipid
1344 hydrophobic interface ot the membrane proteins, gramicidin and apocytochrome
1345 C, using two related fluorescence spectroscopic approaches. The
1346 first approach exploited the fact that the presence of water in
1347 the excited state solvent cage of a fluorophore increases the rate
1348 of decay. For 1,6-diphenyl-1,3,5-hexatriene (DPH) and 1-palmitoyl-2-[[2-[4-(6-phenyl-trans-1,3,5-hexatrienyl)
1349 phenyl]ethyl]carbonyl]-3-sn-PC (DPH-PC), where the fluorophores
1350 are located in the hydrophobic core of the lipid bilayer, the introduction
1351 of gramicidin reduced the fluorescence lifetime, indicative of an
1352 increased presence of water in the bilayer. Since a high protein:lipid
1353 ratio was used, the fluorophores were forced to be adjacent to the
1354 protein hydrophobic surface, hence the presence of water in this
1355 region could be inferred. Cholesterol is known to reduce the water
1356 content of lipid bilayers and this effect was maintained at the
1357 protein-lipid interface with both gramicidin and apocytochrome C,
1358 again suggesting hydration in this region. The second approach was
1359 to use the fluorescence enhancement induced by exchanging deuterium
1360 oxide (D2O) for H2O. Both the fluorescence intensities of trimethylammonium-DPH,
1361 located in the lipid head group region, and of the gramicidin intrinsic
1362 tryptophans were greater in a D2O buffer compared with H2O, showing
1363 that the fluorophores were exposed to water in the bilayer at the
1364 protein-lipid interface. In the presence of cholesterol the fluorescence
1365 intensity ratio of D2O to H2O decreased, indicating a removal of
1366 water by the cholesterol, in keeping with the lifetime data. Altered
1367 hydration at the protein-lipid interface could affect conformation,
1368 thereby offering a new route by which membrane protein functioning
1369 may be modified.},
1370 annote = {Ju251 Times Cited:55 Cited References Count:44},
1371 issn = {0006-3495},
1372 uri = {<Go to ISI>://A1992JU25100002},
1373 }
1374
1375 @BOOK{Hockney1981,
1376 title = {Computer Simulation Using Particles},
1377 publisher = {McGraw-Hill},
1378 year = {1981},
1379 author = {R.W. Hockney and J.W. Eastwood},
1380 address = {New York},
1381 }
1382
1383 @ARTICLE{Huh2004,
1384 author = {Y. Huh and N. M. Cann},
1385 title = {Discrimination in isotropic, nematic, and smectic phases of chiral
1386 calamitic molecules: A computer simulation study},
1387 journal = {Journal of Chemical Physics},
1388 year = {2004},
1389 volume = {121},
1390 pages = {10299-10308},
1391 number = {20},
1392 month = {Nov 22},
1393 abstract = {Racemic fluids of chiral calamitic molecules are investigated with
1394 molecular dynamics simulations. In particular, the phase behavior
1395 as a function of density is examined for eight racemates. The relationship
1396 between chiral discrimination and orientational order in the phase
1397 is explored. We find that the transition from the isotropic phase
1398 to a liquid crystal phase is accompanied by an increase in chiral
1399 discrimination, as measured by differences in radial distributions.
1400 Among ordered phases, discrimination is largest for smectic phases
1401 with a significant preference for heterochiral contact within the
1402 layers. (C) 2004 American Institute of Physics.},
1403 annote = {870FJ Times Cited:0 Cited References Count:63},
1404 issn = {0021-9606},
1405 uri = {<Go to ISI>://000225042700059},
1406 }
1407
1408 @ARTICLE{Izaguirre2001,
1409 author = {J. A. Izaguirre and D. P. Catarello and J. M. Wozniak and R. D. Skeel},
1410 title = {Langevin stabilization of molecular dynamics},
1411 journal = {Journal of Chemical Physics},
1412 year = {2001},
1413 volume = {114},
1414 pages = {2090-2098},
1415 number = {5},
1416 month = {Feb 1},
1417 abstract = {In this paper we show the possibility of using very mild stochastic
1418 damping to stabilize long time step integrators for Newtonian molecular
1419 dynamics. More specifically, stable and accurate integrations are
1420 obtained for damping coefficients that are only a few percent of
1421 the natural decay rate of processes of interest, such as the velocity
1422 autocorrelation function. Two new multiple time stepping integrators,
1423 Langevin Molly (LM) and Brunger-Brooks-Karplus-Molly (BBK-M), are
1424 introduced in this paper. Both use the mollified impulse method
1425 for the Newtonian term. LM uses a discretization of the Langevin
1426 equation that is exact for the constant force, and BBK-M uses the
1427 popular Brunger-Brooks-Karplus integrator (BBK). These integrators,
1428 along with an extrapolative method called LN, are evaluated across
1429 a wide range of damping coefficient values. When large damping coefficients
1430 are used, as one would for the implicit modeling of solvent molecules,
1431 the method LN is superior, with LM closely following. However, with
1432 mild damping of 0.2 ps(-1), LM produces the best results, allowing
1433 long time steps of 14 fs in simulations containing explicitly modeled
1434 flexible water. With BBK-M and the same damping coefficient, time
1435 steps of 12 fs are possible for the same system. Similar results
1436 are obtained for a solvated protein-DNA simulation of estrogen receptor
1437 ER with estrogen response element ERE. A parallel version of BBK-M
1438 runs nearly three times faster than the Verlet-I/r-RESPA (reversible
1439 reference system propagator algorithm) when using the largest stable
1440 time step on each one, and it also parallelizes well. The computation
1441 of diffusion coefficients for flexible water and ER/ERE shows that
1442 when mild damping of up to 0.2 ps-1 is used the dynamics are not
1443 significantly distorted. (C) 2001 American Institute of Physics.},
1444 annote = {397CQ Times Cited:14 Cited References Count:36},
1445 issn = {0021-9606},
1446 uri = {<Go to ISI>://000166676100020},
1447 }
1448
1449 @ARTICLE{Gray2003,
1450 author = {J.~J Gray,S. Moughon, C. Wang },
1451 title = {Protein-protein docking with simultaneous optimization of rigid-body
1452 displacement and side-chain conformations},
1453 journal = {jmb},
1454 year = {2003},
1455 volume = {331},
1456 pages = {281-299},
1457 }
1458
1459 @ARTICLE{Torre1977,
1460 author = {Jose Garcia De La Torre, V.A. Bloomfield},
1461 title = {Hydrodynamic properties of macromolecular complexes. I. Translation},
1462 journal = {Biopolymers},
1463 year = {1977},
1464 volume = {16},
1465 pages = {1747-1763},
1466 }
1467
1468 @ARTICLE{Kane2000,
1469 author = {C. Kane and J. E. Marsden and M. Ortiz and M. West},
1470 title = {Variational integrators and the Newmark algorithm for conservative
1471 and dissipative mechanical systems},
1472 journal = {International Journal for Numerical Methods in Engineering},
1473 year = {2000},
1474 volume = {49},
1475 pages = {1295-1325},
1476 number = {10},
1477 month = {Dec 10},
1478 abstract = {The purpose of this work is twofold. First, we demonstrate analytically
1479 that the classical Newmark family as well as related integration
1480 algorithms are variational in the sense of the Veselov formulation
1481 of discrete mechanics. Such variational algorithms are well known
1482 to be symplectic and momentum preserving and to often have excellent
1483 global energy behaviour. This analytical result is verified through
1484 numerical examples and is believed to be one of the primary reasons
1485 that this class of algorithms performs so well. Second, we develop
1486 algorithms for mechanical systems with forcing, and in particular,
1487 for dissipative systems. In this case, we develop integrators that
1488 are based on a discretization of the Lagrange d'Alembert principle
1489 as well as on a variational formulation of dissipation. It is demonstrated
1490 that these types of structured integrators have good numerical behaviour
1491 in terms of obtaining the correct amounts by which the energy changes
1492 over the integration run. Copyright (C) 2000 John Wiley & Sons,
1493 Ltd.},
1494 annote = {373CJ Times Cited:30 Cited References Count:41},
1495 issn = {0029-5981},
1496 uri = {<Go to ISI>://000165270600004},
1497 }
1498
1499 @ARTICLE{Klimov1997,
1500 author = {D. K. Klimov and D. Thirumalai},
1501 title = {Viscosity dependence of the folding rates of proteins},
1502 journal = {Physical Review Letters},
1503 year = {1997},
1504 volume = {79},
1505 pages = {317-320},
1506 number = {2},
1507 month = {Jul 14},
1508 abstract = {The viscosity (eta) dependence of the folding rates for four sequences
1509 (the native state of three sequences is a beta sheet, while the
1510 fourth forms an alpha helix) is calculated for off-lattice models
1511 of proteins. Assuming that the dynamics is given by the Langevin
1512 equation, we show that the folding rates increase linearly at low
1513 viscosities eta, decrease as 1/eta at large eta, and have a maximum
1514 at intermediate values. The Kramers' theory of barrier crossing
1515 provides a quantitative fit of the numerical results. By mapping
1516 the simulation results to real proteins we estimate that for optimized
1517 sequences the time scale for forming a four turn alpha-helix topology
1518 is about 500 ns, whereas for beta sheet it is about 10 mu s.},
1519 annote = {Xk293 Times Cited:77 Cited References Count:17},
1520 issn = {0031-9007},
1521 uri = {<Go to ISI>://A1997XK29300035},
1522 }
1523
1524 @ARTICLE{Kol1997,
1525 author = {A. Kol and B. B. Laird and B. J. Leimkuhler},
1526 title = {A symplectic method for rigid-body molecular simulation},
1527 journal = {Journal of Chemical Physics},
1528 year = {1997},
1529 volume = {107},
1530 pages = {2580-2588},
1531 number = {7},
1532 month = {Aug 15},
1533 abstract = {Rigid-body molecular dynamics simulations typically are performed
1534 in a quaternion representation. The nonseparable form of the Hamiltonian
1535 in quaternions prevents the use of a standard leapfrog (Verlet)
1536 integrator, so nonsymplectic Runge-Kutta, multistep, or extrapolation
1537 methods are generally used, This is unfortunate since symplectic
1538 methods like Verlet exhibit superior energy conservation in long-time
1539 integrations. In this article, we describe an alternative method,
1540 which we call RSHAKE (for rotation-SHAKE), in which the entire rotation
1541 matrix is evolved (using the scheme of McLachlan and Scovel [J.
1542 Nonlin. Sci, 16 233 (1995)]) in tandem with the particle positions.
1543 We employ a fast approximate Newton solver to preserve the orthogonality
1544 of the rotation matrix. We test our method on a system of soft-sphere
1545 dipoles and compare with quaternion evolution using a 4th-order
1546 predictor-corrector integrator, Although the short-time error of
1547 the quaternion algorithm is smaller for fixed time step than that
1548 for RSHAKE, the quaternion scheme exhibits an energy drift which
1549 is not observed in simulations with RSHAKE, hence a fixed energy
1550 tolerance can be achieved by using a larger time step, The superiority
1551 of RSHAKE increases with system size. (C) 1997 American Institute
1552 of Physics.},
1553 annote = {Xq332 Times Cited:11 Cited References Count:18},
1554 issn = {0021-9606},
1555 uri = {<Go to ISI>://A1997XQ33200046},
1556 }
1557
1558 @ARTICLE{Lansac2001,
1559 author = {Y. Lansac and M. A. Glaser and N. A. Clark},
1560 title = {Microscopic structure and dynamics of a partial bilayer smectic liquid
1561 crystal},
1562 journal = {Physical Review E},
1563 year = {2001},
1564 volume = {6405},
1565 pages = {-},
1566 number = {5},
1567 month = {Nov},
1568 abstract = {Cyanobiphenyls (nCB's) represent a useful and intensively studied
1569 class of mesogens. Many of the peculiar properties of nCB's (e.g.,
1570 the occurence of the partial bilayer smectic-A(d) phase) are thought
1571 to be a manifestation of short-range antiparallel association of
1572 neighboring molecules, resulting from strong dipole-dipole interactions
1573 between cyano groups. To test and extend existing models of microscopic
1574 ordering in nCB's, we carry out large-scale atomistic simulation
1575 studies of the microscopic structure and dynamics of the Sm-A(d)
1576 phase of 4-octyl-4'-cyanobiphenyl (8CB). We compute a variety of
1577 thermodynamic, structural, and dynamical properties for this material,
1578 and make a detailed comparison of our results with experimental
1579 measurements in order to validate our molecular model. Semiquantitative
1580 agreement with experiment is found: the smectic layer spacing and
1581 mass density are well reproduced, translational diffusion constants
1582 are similar to experiment, but the orientational ordering of alkyl
1583 chains is overestimated. This simulation provides a detailed picture
1584 of molecular conformation, smectic layer structure, and intermolecular
1585 correlations in Sm-A(d) 8CB, and demonstrates that pronounced short-range
1586 antiparallel association of molecules arising from dipole-dipole
1587 interactions plays a dominant role in determining the molecular-scale
1588 structure of 8CB.},
1589 annote = {Part 1 496QF Times Cited:10 Cited References Count:60},
1590 issn = {1063-651X},
1591 uri = {<Go to ISI>://000172406900063},
1592 }
1593
1594 @ARTICLE{Lansac2003,
1595 author = {Y. Lansac and P. K. Maiti and N. A. Clark and M. A. Glaser},
1596 title = {Phase behavior of bent-core molecules},
1597 journal = {Physical Review E},
1598 year = {2003},
1599 volume = {67},
1600 pages = {-},
1601 number = {1},
1602 month = {Jan},
1603 abstract = {Recently, a new class of smectic liquid crystal phases characterized
1604 by the spontaneous formation of macroscopic chiral domains from
1605 achiral bent-core molecules has been discovered. We have carried
1606 out Monte Carlo simulations of a minimal hard spherocylinder dimer
1607 model to investigate the role of excluded volume interactions in
1608 determining the phase behavior of bent-core materials and to probe
1609 the molecular origins of polar and chiral symmetry breaking. We
1610 present the phase diagram of hard spherocylinder dimers of length-diameter
1611 ratio of 5 as a function of pressure or density and dimer opening
1612 angle psi. With decreasing psi, a transition from a nonpolar to
1613 a polar smectic A phase is observed near psi=167degrees, and the
1614 nematic phase becomes thermodynamically unstable for psi<135degrees.
1615 Free energy calculations indicate that the antipolar smectic A (SmAP(A))
1616 phase is more stable than the polar smectic A phase (SmAP(F)). No
1617 chiral smectic or biaxial nematic phases were found.},
1618 annote = {Part 1 646CM Times Cited:15 Cited References Count:38},
1619 issn = {1063-651X},
1620 uri = {<Go to ISI>://000181017300042},
1621 }
1622
1623 @BOOK{Leach2001,
1624 title = {Molecular Modeling: Principles and Applications},
1625 publisher = {Pearson Educated Limited},
1626 year = {2001},
1627 author = {A. Leach},
1628 address = {Harlow, England},
1629 edition = {2nd},
1630 }
1631
1632 @ARTICLE{Leimkuhler1999,
1633 author = {B. Leimkuhler},
1634 title = {Reversible adaptive regularization: perturbed Kepler motion and classical
1635 atomic trajectories},
1636 journal = {Philosophical Transactions of the Royal Society of London Series
1637 a-Mathematical Physical and Engineering Sciences},
1638 year = {1999},
1639 volume = {357},
1640 pages = {1101-1133},
1641 number = {1754},
1642 month = {Apr 15},
1643 abstract = {Reversible and adaptive integration methods based on Kustaanheimo-Stiefel
1644 regularization and modified Sundman transformations are applied
1645 to simulate general perturbed Kepler motion and to compute classical
1646 trajectories of atomic systems (e.g. Rydberg atoms). The new family
1647 of reversible adaptive regularization methods also conserves angular
1648 momentum and exhibits superior energy conservation and numerical
1649 stability in long-time integrations. The schemes are appropriate
1650 for scattering, for astronomical calculations of escape time and
1651 long-term stability, and for classical and semiclassical studies
1652 of atomic dynamics. The components of an algorithm for trajectory
1653 calculations are described. Numerical experiments illustrate the
1654 effectiveness of the reversible approach.},
1655 annote = {199EE Times Cited:11 Cited References Count:48},
1656 issn = {1364-503X},
1657 uri = {<Go to ISI>://000080466800007},
1658 }
1659
1660 @BOOK{Leimkuhler2004,
1661 title = {Simulating Hamiltonian Dynamics},
1662 publisher = {Cambridge University Press},
1663 year = {2004},
1664 author = {B. Leimkuhler and S. Reich},
1665 address = {Cambridge},
1666 }
1667
1668 @ARTICLE{Levelut1981,
1669 author = {A. M. Levelut and R. J. Tarento and F. Hardouin and M. F. Achard
1670 and G. Sigaud},
1671 title = {Number of Sa Phases},
1672 journal = {Physical Review A},
1673 year = {1981},
1674 volume = {24},
1675 pages = {2180-2186},
1676 number = {4},
1677 annote = {Ml751 Times Cited:96 Cited References Count:16},
1678 issn = {1050-2947},
1679 uri = {<Go to ISI>://A1981ML75100057},
1680 }
1681
1682 @ARTICLE{Lieb1982,
1683 author = {W. R. Lieb and M. Kovalycsik and R. Mendelsohn},
1684 title = {Do Clinical-Levels of General-Anesthetics Affect Lipid Bilayers -
1685 Evidence from Raman-Scattering},
1686 journal = {Biochimica Et Biophysica Acta},
1687 year = {1982},
1688 volume = {688},
1689 pages = {388-398},
1690 number = {2},
1691 annote = {Nu461 Times Cited:40 Cited References Count:28},
1692 issn = {0006-3002},
1693 uri = {<Go to ISI>://A1982NU46100012},
1694 }
1695
1696 @ARTICLE{Link1997,
1697 author = {D. R. Link and G. Natale and R. Shao and J. E. Maclennan and N. A.
1698 Clark and E. Korblova and D. M. Walba},
1699 title = {Spontaneous formation of macroscopic chiral domains in a fluid smectic
1700 phase of achiral molecules},
1701 journal = {Science},
1702 year = {1997},
1703 volume = {278},
1704 pages = {1924-1927},
1705 number = {5345},
1706 month = {Dec 12},
1707 abstract = {A smectic liquid-crystal phase made from achiral molecules with bent
1708 cores was found to have fluid layers that exhibit two spontaneous
1709 symmetry-breaking instabilities: polar molecular orientational ordering
1710 about the layer normal and molecular tilt. These instabilities combine
1711 to form a chiral layer structure with a handedness that depends
1712 on the sign of the tilt. The bulk states are either antiferroelectric-racemic,
1713 with the layer polar direction and handedness alternating in sign
1714 from layer to layer, or antiferroelectric-chiral, which is of uniform
1715 layer handedness. Both states exhibit an electric field-induced
1716 transition from antiferroelectric to ferroelectric.},
1717 annote = {Yl002 Times Cited:407 Cited References Count:25},
1718 issn = {0036-8075},
1719 uri = {<Go to ISI>://A1997YL00200028},
1720 }
1721
1722 @ARTICLE{Liwo2005,
1723 author = {A. Liwo and M. Khalili and H. A. Scheraga},
1724 title = {Ab initio simulations of protein folding pathways by molecular dynamics
1725 with the united-residue (UNRES) model of polypeptide chains},
1726 journal = {Febs Journal},
1727 year = {2005},
1728 volume = {272},
1729 pages = {359-360},
1730 month = {Jul},
1731 annote = {Suppl. 1 005MG Times Cited:0 Cited References Count:0},
1732 issn = {1742-464X},
1733 uri = {<Go to ISI>://000234826102043},
1734 }
1735
1736 @ARTICLE{Luty1994,
1737 author = {B. A. Luty and M. E. Davis and I. G. Tironi and W. F. Vangunsteren},
1738 title = {A Comparison of Particle-Particle, Particle-Mesh and Ewald Methods
1739 for Calculating Electrostatic Interactions in Periodic Molecular-Systems},
1740 journal = {Molecular Simulation},
1741 year = {1994},
1742 volume = {14},
1743 pages = {11-20},
1744 number = {1},
1745 abstract = {We compare the Particle-Particle Particle-Mesh (PPPM) and Ewald methods
1746 for calculating electrostatic interactions in periodic molecular
1747 systems. A brief comparison of the theories shows that the methods
1748 are very similar differing mainly in the technique which is used
1749 to perform the ''k-space'' or mesh calculation. Because the PPPM
1750 utilizes the highly efficient numerical Fast Fourier Transform (FFT)
1751 method it requires significantly less computational effort than
1752 the Ewald method and scale's almost linearly with system size.},
1753 annote = {Qf464 Times Cited:50 Cited References Count:20},
1754 issn = {0892-7022},
1755 uri = {<Go to ISI>://A1994QF46400002},
1756 }
1757
1758 @BOOK{Marion1990,
1759 title = {Classical Dynamics of Particles and Systems},
1760 publisher = {Academic Press},
1761 year = {1990},
1762 author = {J.~B. Marion},
1763 address = {New York},
1764 edition = {2rd},
1765 }
1766
1767 @ARTICLE{Marsden1998,
1768 author = {J. E. Marsden and G. W. Patrick and S. Shkoller},
1769 title = {Multisymplectic geometry, variational integrators, and nonlinear
1770 PDEs},
1771 journal = {Communications in Mathematical Physics},
1772 year = {1998},
1773 volume = {199},
1774 pages = {351-395},
1775 number = {2},
1776 month = {Dec},
1777 abstract = {This paper presents a geometric-variational approach to continuous
1778 and discrete mechanics and field theories. Using multisymplectic
1779 geometry, we show that the existence of the fundamental geometric
1780 structures as well as their preservation along solutions can be
1781 obtained directly from the variational principle. In particular,
1782 we prove that a unique multisymplectic structure is obtained by
1783 taking the derivative of an action function, and use this structure
1784 to prove covariant generalizations of conservation of symplecticity
1785 and Noether's theorem. Natural discretization schemes for PDEs,
1786 which have these important preservation properties, then follow
1787 by choosing a discrete action functional. In the case of mechanics,
1788 we recover the variational symplectic integrators of Veselov type,
1789 while for PDEs we obtain covariant spacetime integrators which conserve
1790 the corresponding discrete multisymplectic form as well as the discrete
1791 momentum mappings corresponding to symmetries. We show that the
1792 usual notion of symplecticity along an infinite-dimensional space
1793 of fields can be naturally obtained by making a spacetime split.
1794 All of the aspects of our method are demonstrated with a nonlinear
1795 sine-Gordon equation, including computational results and a comparison
1796 with other discretization schemes.},
1797 annote = {154RH Times Cited:88 Cited References Count:36},
1798 issn = {0010-3616},
1799 uri = {<Go to ISI>://000077902200006},
1800 }
1801
1802 @ARTICLE{McLachlan1993,
1803 author = {R.~I McLachlan},
1804 title = {Explicit Lie-Poisson integration and the Euler equations},
1805 journal = {prl},
1806 year = {1993},
1807 volume = {71},
1808 pages = {3043-3046},
1809 }
1810
1811 @ARTICLE{McLachlan1998a,
1812 author = {R. I. McLachlan and G. R. W. Quispel},
1813 title = {Generating functions for dynamical systems with symmetries, integrals,
1814 and differential invariants},
1815 journal = {Physica D},
1816 year = {1998},
1817 volume = {112},
1818 pages = {298-309},
1819 number = {1-2},
1820 month = {Jan 15},
1821 abstract = {We give a survey and some new examples of generating functions for
1822 systems with symplectic structure, systems with a first integral,
1823 systems that preserve volume, and systems with symmetries and/or
1824 time-reversing symmetries. Both ODEs and maps are treated, and we
1825 discuss how generating functions may be used in the structure-preserving
1826 numerical integration of ODEs with the above properties.},
1827 annote = {Yt049 Times Cited:7 Cited References Count:26},
1828 issn = {0167-2789},
1829 uri = {<Go to ISI>://000071558900021},
1830 }
1831
1832 @ARTICLE{McLachlan1998,
1833 author = {R. I. McLachlan and G. R. W. Quispel and G. S. Turner},
1834 title = {Numerical integrators that preserve symmetries and reversing symmetries},
1835 journal = {Siam Journal on Numerical Analysis},
1836 year = {1998},
1837 volume = {35},
1838 pages = {586-599},
1839 number = {2},
1840 month = {Apr},
1841 abstract = {We consider properties of flows, the relationships between them, and
1842 whether numerical integrators can be made to preserve these properties.
1843 This is done in the context of automorphisms and antiautomorphisms
1844 of a certain group generated by maps associated to vector fields.
1845 This new framework unifies several known constructions. We also
1846 use the concept of #covariance# of a numerical method with respect
1847 to a group of coordinate transformations. The main application is
1848 to explore the relationship between spatial symmetries, reversing
1849 symmetries, and time symmetry of flows and numerical integrators.},
1850 annote = {Zc449 Times Cited:14 Cited References Count:33},
1851 issn = {0036-1429},
1852 uri = {<Go to ISI>://000072580500010},
1853 }
1854
1855 @ARTICLE{McLachlan2005,
1856 author = {R. I. McLachlan and A. Zanna},
1857 title = {The discrete Moser-Veselov algorithm for the free rigid body, revisited},
1858 journal = {Foundations of Computational Mathematics},
1859 year = {2005},
1860 volume = {5},
1861 pages = {87-123},
1862 number = {1},
1863 month = {Feb},
1864 abstract = {In this paper we revisit the Moser-Veselov description of the free
1865 rigid body in body coordinates, which, in the 3 x 3 case, can be
1866 implemented as an explicit, second-order, integrable approximation
1867 of the continuous solution. By backward error analysis, we study
1868 the modified vector field which is integrated exactly by the discrete
1869 algorithm. We deduce that the discrete Moser-Veselov (DMV) is well
1870 approximated to higher order by time reparametrizations of the continuous
1871 equations (modified vector field). We use the modified vector field
1872 to scale the initial data of the DMV to improve the order of the
1873 approximation and show the equivalence of the DMV and the RATTLE
1874 algorithm. Numerical integration with these preprocessed initial
1875 data is several orders of magnitude more accurate than the original
1876 DMV and RATTLE approach.},
1877 annote = {911NS Times Cited:0 Cited References Count:14},
1878 issn = {1615-3375},
1879 uri = {<Go to ISI>://000228011900003},
1880 }
1881
1882 @ARTICLE{Memmer2002,
1883 author = {R. Memmer},
1884 title = {Liquid crystal phases of achiral banana-shaped molecules: a computer
1885 simulation study},
1886 journal = {Liquid Crystals},
1887 year = {2002},
1888 volume = {29},
1889 pages = {483-496},
1890 number = {4},
1891 month = {Apr},
1892 abstract = {The phase behaviour of achiral banana-shaped molecules was studied
1893 by computer simulation. The banana-shaped molecules were described
1894 by model intermolecular interactions based on the Gay-Berne potential.
1895 The characteristic molecular structure was considered by joining
1896 two calamitic Gay-Berne particles through a bond to form a biaxial
1897 molecule of point symmetry group C-2v with a suitable bending angle.
1898 The dependence on temperature of systems of N=1024 rigid banana-shaped
1899 molecules with bending angle phi=140degrees has been studied by
1900 means of Monte Carlo simulations in the isobaric-isothermal ensemble
1901 (NpT). On cooling an isotropic system, two phase transitions characterized
1902 by phase transition enthalpy, entropy and relative volume change
1903 have been observed. For the first time by computer simulation of
1904 a many-particle system of banana-shaped molecules, at low temperature
1905 an untilted smectic phase showing a global phase biaxiality and
1906 a spontaneous local polarization in the layers, i.e. a local polar
1907 arrangement of the steric dipoles, with an antiferroelectric-like
1908 superstructure could be proven, a phase structure which recently
1909 has been discovered experimentally. Additionally, at intermediate
1910 temperature a nematic-like phase has been proved, whereas close
1911 to the transition to the smectic phase hints of a spontaneous achiral
1912 symmetry breaking have been determined. Here, in the absence of
1913 a layered structure a helical superstructure has been formed. All
1914 phases have been characterized by visual representations of selected
1915 configurations, scalar and pseudoscalar correlation functions, and
1916 order parameters.},
1917 annote = {531HT Times Cited:12 Cited References Count:37},
1918 issn = {0267-8292},
1919 uri = {<Go to ISI>://000174410500001},
1920 }
1921
1922 @ARTICLE{Metropolis1949,
1923 author = {N. Metropolis and S. Ulam},
1924 title = {The $\mbox{Monte Carlo}$ Method},
1925 journal = {J. Am. Stat. Ass.},
1926 year = {1949},
1927 volume = {44},
1928 pages = {335-341},
1929 }
1930
1931 @ARTICLE{Mielke2004,
1932 author = {S. P. Mielke and W. H. Fink and V. V. Krishnan and N. Gronbech-Jensen
1933 and C. J. Benham},
1934 title = {Transcription-driven twin supercoiling of a DNA loop: A Brownian
1935 dynamics study},
1936 journal = {Journal of Chemical Physics},
1937 year = {2004},
1938 volume = {121},
1939 pages = {8104-8112},
1940 number = {16},
1941 month = {Oct 22},
1942 abstract = {The torque generated by RNA polymerase as it tracks along double-stranded
1943 DNA can potentially induce long-range structural deformations integral
1944 to mechanisms of biological significance in both prokaryotes and
1945 eukaryotes. In this paper, we introduce a dynamic computer model
1946 for investigating this phenomenon. Duplex DNA is represented as
1947 a chain of hydrodynamic beads interacting through potentials of
1948 linearly elastic stretching, bending, and twisting, as well as excluded
1949 volume. The chain, linear when relaxed, is looped to form two open
1950 but topologically constrained subdomains. This permits the dynamic
1951 introduction of torsional stress via a centrally applied torque.
1952 We simulate by Brownian dynamics the 100 mus response of a 477-base
1953 pair B-DNA template to the localized torque generated by the prokaryotic
1954 transcription ensemble. Following a sharp rise at early times, the
1955 distributed twist assumes a nearly constant value in both subdomains,
1956 and a succession of supercoiling deformations occurs as superhelical
1957 stress is increasingly partitioned to writhe. The magnitude of writhe
1958 surpasses that of twist before also leveling off when the structure
1959 reaches mechanical equilibrium with the torsional load. Superhelicity
1960 is simultaneously right handed in one subdomain and left handed
1961 in the other, as predicted by the #transcription-induced##twin-supercoiled-domain#
1962 model [L. F. Liu and J. C. Wang, Proc. Natl. Acad. Sci. U.S.A. 84,
1963 7024 (1987)]. The properties of the chain at the onset of writhing
1964 agree well with predictions from theory, and the generated stress
1965 is ample for driving secondary structural transitions in physiological
1966 DNA. (C) 2004 American Institute of Physics.},
1967 annote = {861ZF Times Cited:3 Cited References Count:34},
1968 issn = {0021-9606},
1969 uri = {<Go to ISI>://000224456500064},
1970 }
1971
1972 @ARTICLE{Naess2001,
1973 author = {S. N. Naess and H. M. Adland and A. Mikkelsen and A. Elgsaeter},
1974 title = {Brownian dynamics simulation of rigid bodies and segmented polymer
1975 chains. Use of Cartesian rotation vectors as the generalized coordinates
1976 describing angular orientations},
1977 journal = {Physica A},
1978 year = {2001},
1979 volume = {294},
1980 pages = {323-339},
1981 number = {3-4},
1982 month = {May 15},
1983 abstract = {The three Eulerian angles constitute the classical choice of generalized
1984 coordinates used to describe the three degrees of rotational freedom
1985 of a rigid body, but it has long been known that this choice yields
1986 singular equations of motion. The latter is also true when Eulerian
1987 angles are used in Brownian dynamics analyses of the angular orientation
1988 of single rigid bodies and segmented polymer chains. Starting from
1989 kinetic theory we here show that by instead employing the three
1990 components of Cartesian rotation vectors as the generalized coordinates
1991 describing angular orientation, no singularity appears in the configuration
1992 space diffusion equation and the associated Brownian dynamics algorithm.
1993 The suitability of Cartesian rotation vectors in Brownian dynamics
1994 simulations of segmented polymer chains with spring-like or ball-socket
1995 joints is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.},
1996 annote = {433TA Times Cited:7 Cited References Count:19},
1997 issn = {0378-4371},
1998 uri = {<Go to ISI>://000168774800005},
1999 }
2000
2001 @ARTICLE{Niori1996,
2002 author = {T. Niori and T. Sekine and J. Watanabe and T. Furukawa and H. Takezoe},
2003 title = {Distinct ferroelectric smectic liquid crystals consisting of banana
2004 shaped achiral molecules},
2005 journal = {Journal of Materials Chemistry},
2006 year = {1996},
2007 volume = {6},
2008 pages = {1231-1233},
2009 number = {7},
2010 month = {Jul},
2011 abstract = {The synthesis of a banana-shaped molecule is reported and it is found
2012 that the smectic phase which it forms is biaxial with the molecules
2013 packed in the best,direction into a layer. Because of this characteristic
2014 packing, spontaneous polarization appears parallel to the layer
2015 and switches on reversal of an applied electric field. This is the
2016 first obvious example of ferroelectricity in an achiral smectic
2017 phase and is ascribed to the C-2v symmetry of the molecular packing.},
2018 annote = {Ux855 Times Cited:447 Cited References Count:18},
2019 issn = {0959-9428},
2020 uri = {<Go to ISI>://A1996UX85500025},
2021 }
2022
2023 @ARTICLE{Noguchi2002,
2024 author = {H. Noguchi and M. Takasu},
2025 title = {Structural changes of pulled vesicles: A Brownian dynamics simulation},
2026 journal = {Physical Review E},
2027 year = {2002},
2028 volume = {65},
2029 pages = {-},
2030 number = {5},
2031 month = {may},
2032 abstract = {We Studied the structural changes of bilayer vesicles induced by mechanical
2033 forces using a Brownian dynamics simulation. Two nanoparticles,
2034 which interact repulsively with amphiphilic molecules, are put inside
2035 a vesicle. The position of one nanoparticle is fixed, and the other
2036 is moved by a constant force as in optical-trapping experiments.
2037 First, the pulled vesicle stretches into a pear or tube shape. Then
2038 the inner monolayer in the tube-shaped region is deformed, and a
2039 cylindrical structure is formed between two vesicles. After stretching
2040 the cylindrical region, fission occurs near the moved vesicle. Soon
2041 after this the cylindrical region shrinks. The trapping force similar
2042 to 100 pN is needed to induce the formation of the cylindrical structure
2043 and fission.},
2044 annote = {Part 1 568PX Times Cited:5 Cited References Count:39},
2045 issn = {1063-651X},
2046 uri = {<Go to ISI>://000176552300084},
2047 }
2048
2049 @ARTICLE{Noguchi2001,
2050 author = {H. Noguchi and M. Takasu},
2051 title = {Fusion pathways of vesicles: A Brownian dynamics simulation},
2052 journal = {Journal of Chemical Physics},
2053 year = {2001},
2054 volume = {115},
2055 pages = {9547-9551},
2056 number = {20},
2057 month = {Nov 22},
2058 abstract = {We studied the fusion dynamics of vesicles using a Brownian dynamics
2059 simulation. Amphiphilic molecules spontaneously form vesicles with
2060 a bilayer structure. Two vesicles come into contact and form a stalk
2061 intermediate, in which a necklike structure only connects the outer
2062 monolayers, as predicted by the stalk hypothesis. We have found
2063 a new pathway of pore opening from stalks at high temperature: the
2064 elliptic stalk bends and contact between the ends of the arc-shaped
2065 stalk leads to pore opening. On the other hand, we have clarified
2066 that the pore-opening process at low temperature agrees with the
2067 modified stalk model: a pore is induced by contact between the inner
2068 monolayers inside the stalk. (C) 2001 American Institute of Physics.},
2069 annote = {491UW Times Cited:48 Cited References Count:25},
2070 issn = {0021-9606},
2071 uri = {<Go to ISI>://000172129300049},
2072 }
2073
2074 @BOOK{Olver1986,
2075 title = {Applications of Lie groups to differential equatitons},
2076 publisher = {Springer},
2077 year = {1986},
2078 author = {P.J. Olver},
2079 address = {New York},
2080 }
2081
2082 @ARTICLE{Omelyan1998,
2083 author = {I. P. Omelyan},
2084 title = {On the numerical integration of motion for rigid polyatomics: The
2085 modified quaternion approach},
2086 journal = {Computers in Physics},
2087 year = {1998},
2088 volume = {12},
2089 pages = {97-103},
2090 number = {1},
2091 month = {Jan-Feb},
2092 abstract = {A revised version of the quaternion approach for numerical integration
2093 of the equations of motion for rigid polyatomic molecules is proposed.
2094 The modified approach is based on a formulation of the quaternion
2095 dynamics with constraints. This allows one to resolve the rigidity
2096 problem rigorously using constraint forces. It is shown that the
2097 procedure for preservation of molecular rigidity can be realized
2098 particularly simply within the Verlet algorithm in velocity form.
2099 We demonstrate that the method presented leads to an improved numerical
2100 stability with respect to the usual quaternion rescaling scheme
2101 and it is roughly as good as the cumbersome atomic-constraint technique.
2102 (C) 1998 American Institute of Physics.},
2103 annote = {Yx279 Times Cited:12 Cited References Count:28},
2104 issn = {0894-1866},
2105 uri = {<Go to ISI>://000072024300025},
2106 }
2107
2108 @ARTICLE{Omelyan1998a,
2109 author = {I. P. Omelyan},
2110 title = {Algorithm for numerical integration of the rigid-body equations of
2111 motion},
2112 journal = {Physical Review E},
2113 year = {1998},
2114 volume = {58},
2115 pages = {1169-1172},
2116 number = {1},
2117 month = {Jul},
2118 abstract = {An algorithm for numerical integration of the rigid-body equations
2119 of motion is proposed. The algorithm uses the leapfrog scheme and
2120 the quantities involved are angular velocities and orientational
2121 variables that can be expressed in terms of either principal axes
2122 or quaternions. Due to specific features of the algorithm, orthonormality
2123 and unit norms of the orientational variables are integrals of motion,
2124 despite an approximate character of the produced trajectories. It
2125 is shown that the method presented appears to be the most efficient
2126 among all such algorithms known.},
2127 annote = {101XL Times Cited:8 Cited References Count:22},
2128 issn = {1063-651X},
2129 uri = {<Go to ISI>://000074893400151},
2130 }
2131
2132 @ARTICLE{Orlandi2006,
2133 author = {S. Orlandi and R. Berardi and J. Steltzer and C. Zannoni},
2134 title = {A Monte Carlo study of the mesophases formed by polar bent-shaped
2135 molecules},
2136 journal = {Journal of Chemical Physics},
2137 year = {2006},
2138 volume = {124},
2139 pages = {-},
2140 number = {12},
2141 month = {Mar 28},
2142 abstract = {Liquid crystal phases formed by bent-shaped (or #banana#) molecules
2143 are currently of great interest. Here we investigate by Monte Carlo
2144 computer simulations the phases formed by rigid banana molecules
2145 modeled combining three Gay-Berne sites and containing either one
2146 central or two lateral and transversal dipoles. We show that changing
2147 the dipole position and orientation has a profound effect on the
2148 mesophase stability and molecular organization. In particular, we
2149 find a uniaxial nematic phase only for off-center dipolar models
2150 and tilted phases only for the one with terminal dipoles. (c) 2006
2151 American Institute of Physics.},
2152 annote = {028CP Times Cited:0 Cited References Count:42},
2153 issn = {0021-9606},
2154 uri = {<Go to ISI>://000236464000072},
2155 }
2156
2157 @ARTICLE{Owren1992,
2158 author = {B. Owren and M. Zennaro},
2159 title = {Derivation of Efficient, Continuous, Explicit Runge-Kutta Methods},
2160 journal = {Siam Journal on Scientific and Statistical Computing},
2161 year = {1992},
2162 volume = {13},
2163 pages = {1488-1501},
2164 number = {6},
2165 month = {Nov},
2166 abstract = {Continuous, explicit Runge-Kutta methods with the minimal number of
2167 stages are considered. These methods are continuously differentiable
2168 if and only if one of the stages is the FSAL evaluation. A characterization
2169 of a subclass of these methods is developed for orders 3, 4, and
2170 5. It is shown how the free parameters of these methods can be used
2171 either to minimize the continuous truncation error coefficients
2172 or to maximize the stability region. As a representative for these
2173 methods the fifth-order method with minimized error coefficients
2174 is chosen, supplied with an error estimation method, and analysed
2175 by using the DETEST software. The results are compared with a similar
2176 implementation of the Dormand-Prince 5(4) pair with interpolant,
2177 showing a significant advantage in the new method for the chosen
2178 problems.},
2179 annote = {Ju936 Times Cited:25 Cited References Count:20},
2180 issn = {0196-5204},
2181 uri = {<Go to ISI>://A1992JU93600013},
2182 }
2183
2184 @ARTICLE{Palacios1998,
2185 author = {J. L. Garcia-Palacios and F. J. Lazaro},
2186 title = {Langevin-dynamics study of the dynamical properties of small magnetic
2187 particles},
2188 journal = {Physical Review B},
2189 year = {1998},
2190 volume = {58},
2191 pages = {14937-14958},
2192 number = {22},
2193 month = {Dec 1},
2194 abstract = {The stochastic Landau-Lifshitz-Gilbert equation of motion for a classical
2195 magnetic moment is numerically solved (properly observing the customary
2196 interpretation of it as a Stratonovich stochastic differential equation),
2197 in order to study the dynamics of magnetic nanoparticles. The corresponding
2198 Langevin-dynamics approach allows for the study of the fluctuating
2199 trajectories of individual magnetic moments, where we have encountered
2200 remarkable phenomena in the overbarrier rotation process, such as
2201 crossing-back or multiple crossing of the potential barrier, rooted
2202 in the gyromagnetic nature of the system. Concerning averaged quantities,
2203 we study the linear dynamic response of the archetypal ensemble
2204 of noninteracting classical magnetic moments with axially symmetric
2205 magnetic anisotropy. The results are compared with different analytical
2206 expressions used to model the relaxation of nanoparticle ensembles,
2207 assessing their accuracy. It has been found that, among a number
2208 of heuristic expressions for the linear dynamic susceptibility,
2209 only the simple formula proposed by Shliomis and Stepanov matches
2210 the coarse features of the susceptibility reasonably. By comparing
2211 the numerical results with the asymptotic formula of Storonkin {Sov.
2212 Phys. Crystallogr. 30, 489 (1985) [Kristallografiya 30, 841 (1985)]},
2213 the effects of the intra-potential-well relaxation modes on the
2214 low-temperature longitudinal dynamic response have been assessed,
2215 showing their relatively small reflection in the susceptibility
2216 curves but their dramatic influence on the phase shifts. Comparison
2217 of the numerical results with the exact zero-damping expression
2218 for the transverse susceptibility by Garanin, Ishchenko, and Panina
2219 {Theor. Math. Phys. (USSR) 82, 169 (1990) [Teor. Mat. Fit. 82, 242
2220 (1990)]}, reveals a sizable contribution of the spread of the precession
2221 frequencies of the magnetic moment in the anisotropy field to the
2222 dynamic response at intermediate-to-high temperatures. [S0163-1829
2223 (98)00446-9].},
2224 annote = {146XW Times Cited:66 Cited References Count:45},
2225 issn = {0163-1829},
2226 uri = {<Go to ISI>://000077460000052},
2227 }
2228
2229 @ARTICLE{Pastor1988,
2230 author = {R. W. Pastor and B. R. Brooks and A. Szabo},
2231 title = {An Analysis of the Accuracy of Langevin and Molecular-Dynamics Algorithms},
2232 journal = {Molecular Physics},
2233 year = {1988},
2234 volume = {65},
2235 pages = {1409-1419},
2236 number = {6},
2237 month = {Dec 20},
2238 annote = {T1302 Times Cited:61 Cited References Count:26},
2239 issn = {0026-8976},
2240 uri = {<Go to ISI>://A1988T130200011},
2241 }
2242
2243 @ARTICLE{Pelzl1999,
2244 author = {G. Pelzl and S. Diele and W. Weissflog},
2245 title = {Banana-shaped compounds - A new field of liquid crystals},
2246 journal = {Advanced Materials},
2247 year = {1999},
2248 volume = {11},
2249 pages = {707-724},
2250 number = {9},
2251 month = {Jul 5},
2252 annote = {220RC Times Cited:313 Cited References Count:49},
2253 issn = {0935-9648},
2254 uri = {<Go to ISI>://000081680400007},
2255 }
2256
2257 @ARTICLE{Perram1985,
2258 author = {J. W. Perram and M. S. Wertheim},
2259 title = {Statistical-Mechanics of Hard Ellipsoids .1. Overlap Algorithm and
2260 the Contact Function},
2261 journal = {Journal of Computational Physics},
2262 year = {1985},
2263 volume = {58},
2264 pages = {409-416},
2265 number = {3},
2266 annote = {Akb93 Times Cited:71 Cited References Count:12},
2267 issn = {0021-9991},
2268 uri = {<Go to ISI>://A1985AKB9300008},
2269 }
2270
2271 @ARTICLE{Rotne1969,
2272 author = {F. Perrin},
2273 title = {Variational treatment of hydrodynamic interaction in polymers},
2274 journal = {J. Chem. Phys.},
2275 year = {1969},
2276 volume = {50},
2277 pages = {4831¨C4837},
2278 }
2279
2280 @ARTICLE{Perrin1936,
2281 author = {F. Perrin},
2282 title = {Mouvement brownien d'un ellipsoid(II). Rotation libre et depolarisation
2283 des fluorescences. Translation et diffusion de moleculese ellipsoidales},
2284 journal = {J. Phys. Radium},
2285 year = {1936},
2286 volume = {7},
2287 pages = {1-11},
2288 }
2289
2290 @ARTICLE{Perrin1934,
2291 author = {F. Perrin},
2292 title = {Mouvement brownien d'un ellipsoid(I). Dispersion dielectrique pour
2293 des molecules ellipsoidales},
2294 journal = {J. Phys. Radium},
2295 year = {1934},
2296 volume = {5},
2297 pages = {497-511},
2298 }
2299
2300 @ARTICLE{Petrache1998,
2301 author = {H. I. Petrache and S. Tristram-Nagle and J. F. Nagle},
2302 title = {Fluid phase structure of EPC and DMPC bilayers},
2303 journal = {Chemistry and Physics of Lipids},
2304 year = {1998},
2305 volume = {95},
2306 pages = {83-94},
2307 number = {1},
2308 month = {Sep},
2309 abstract = {X-ray diffraction data taken at high instrumental resolution were
2310 obtained for EPC and DMPC under various osmotic pressures, primarily
2311 at T = 30 degrees C. The headgroup thickness D-HH was obtained from
2312 relative electron density profiles. By using volumetric results
2313 and by comparing to gel phase DPPC we obtain areas A(EPC)(F) = 69.4
2314 +/- 1.1 Angstrom(2) and A(DMPC)(F) = 59.7 +/- 0.2 Angstrom(2). The
2315 analysis also gives estimates for the areal compressibility K-A.
2316 The A(F) results lead to other structural results regarding membrane
2317 thickness and associated waters. Using the recently determined absolute
2318 electrons density profile of DPPC, the AF results also lead to absolute
2319 electron density profiles and absolute continuous transforms \F(q)\
2320 for EPC and DMPC, Limited measurements of temperature dependence
2321 show directly that fluctuations increase with increasing temperature
2322 and that a small decrease in bending modulus K-c accounts for the
2323 increased water spacing reported by Simon et al. (1995) Biophys.
2324 J. 69, 1473-1483. (C) 1998 Elsevier Science Ireland Ltd. All rights
2325 reserved.},
2326 annote = {130AT Times Cited:98 Cited References Count:39},
2327 issn = {0009-3084},
2328 uri = {<Go to ISI>://000076497600007},
2329 }
2330
2331 @ARTICLE{Powles1973,
2332 author = {J.~G. Powles},
2333 title = {A general ellipsoid can not always serve as a modle for the rotational
2334 diffusion properties of arbitrary shaped rigid molecules},
2335 journal = {Advan. Phys.},
2336 year = {1973},
2337 volume = {22},
2338 pages = {1-56},
2339 }
2340
2341 @ARTICLE{Recio2004,
2342 author = {J. Fernandez-Recio and M. Totrov and R. Abagyan},
2343 title = {Identification of protein-protein interaction sites from docking
2344 energy landscapes},
2345 journal = {Journal of Molecular Biology},
2346 year = {2004},
2347 volume = {335},
2348 pages = {843-865},
2349 number = {3},
2350 month = {Jan 16},
2351 abstract = {Protein recognition is one of the most challenging and intriguing
2352 problems in structural biology. Despite all the available structural,
2353 sequence and biophysical information about protein-protein complexes,
2354 the physico-chemical patterns, if any, that make a protein surface
2355 likely to be involved in protein-protein interactions, remain elusive.
2356 Here, we apply protein docking simulations and analysis of the interaction
2357 energy landscapes to identify protein-protein interaction sites.
2358 The new protocol for global docking based on multi-start global
2359 energy optimization of an allatom model of the ligand, with detailed
2360 receptor potentials and atomic solvation parameters optimized in
2361 a training set of 24 complexes, explores the conformational space
2362 around the whole receptor without restrictions. The ensembles of
2363 the rigid-body docking solutions generated by the simulations were
2364 subsequently used to project the docking energy landscapes onto
2365 the protein surfaces. We found that highly populated low-energy
2366 regions consistently corresponded to actual binding sites. The procedure
2367 was validated on a test set of 21 known protein-protein complexes
2368 not used in the training set. As much as 81% of the predicted high-propensity
2369 patch residues were located correctly in the native interfaces.
2370 This approach can guide the design of mutations on the surfaces
2371 of proteins, provide geometrical details of a possible interaction,
2372 and help to annotate protein surfaces in structural proteomics.
2373 (C) 2003 Elsevier Ltd. All rights reserved.},
2374 annote = {763GQ Times Cited:21 Cited References Count:59},
2375 issn = {0022-2836},
2376 uri = {<Go to ISI>://000188066900016},
2377 }
2378
2379 @ARTICLE{Reddy2006,
2380 author = {R. A. Reddy and C. Tschierske},
2381 title = {Bent-core liquid crystals: polar order, superstructural chirality
2382 and spontaneous desymmetrisation in soft matter systems},
2383 journal = {Journal of Materials Chemistry},
2384 year = {2006},
2385 volume = {16},
2386 pages = {907-961},
2387 number = {10},
2388 abstract = {An overview on the recent developments in the field of liquid crystalline
2389 bent-core molecules (so-called banana liquid crystals) is given.
2390 After some basic issues, dealing with general aspects of the systematisation
2391 of the mesophases, development of polar order and chirality in this
2392 class of LC systems and explaining some general structure-property
2393 relationships, we focus on fascinating new developments in this
2394 field, such as modulated, undulated and columnar phases, so-called
2395 B7 phases, phase biaxiality, ferroelectric and antiferroelectric
2396 polar order in smectic and columnar phases, amplification and switching
2397 of chirality and the spontaneous formation of superstructural and
2398 supramolecular chirality.},
2399 annote = {021NS Times Cited:2 Cited References Count:316},
2400 issn = {0959-9428},
2401 uri = {<Go to ISI>://000235990500001},
2402 }
2403
2404 @ARTICLE{Reich1999,
2405 author = {S. Reich},
2406 title = {Backward error analysis for numerical integrators},
2407 journal = {Siam Journal on Numerical Analysis},
2408 year = {1999},
2409 volume = {36},
2410 pages = {1549-1570},
2411 number = {5},
2412 month = {Sep 8},
2413 abstract = {Backward error analysis has become an important tool for understanding
2414 the long time behavior of numerical integration methods. This is
2415 true in particular for the integration of Hamiltonian systems where
2416 backward error analysis can be used to show that a symplectic method
2417 will conserve energy over exponentially long periods of time. Such
2418 results are typically based on two aspects of backward error analysis:
2419 (i) It can be shown that the modified vector fields have some qualitative
2420 properties which they share with the given problem and (ii) an estimate
2421 is given for the difference between the best interpolating vector
2422 field and the numerical method. These aspects have been investigated
2423 recently, for example, by Benettin and Giorgilli in [J. Statist.
2424 Phys., 74 (1994), pp. 1117-1143], by Hairer in [Ann. Numer. Math.,
2425 1 (1994), pp. 107-132], and by Hairer and Lubich in [Numer. Math.,
2426 76 (1997), pp. 441-462]. In this paper we aim at providing a unifying
2427 framework and a simplification of the existing results and corresponding
2428 proofs. Our approach to backward error analysis is based on a simple
2429 recursive definition of the modified vector fields that does not
2430 require explicit Taylor series expansion of the numerical method
2431 and the corresponding flow maps as in the above-cited works. As
2432 an application we discuss the long time integration of chaotic Hamiltonian
2433 systems and the approximation of time averages along numerically
2434 computed trajectories.},
2435 annote = {237HV Times Cited:43 Cited References Count:41},
2436 issn = {0036-1429},
2437 uri = {<Go to ISI>://000082650600010},
2438 }
2439
2440 @ARTICLE{Ros2005,
2441 author = {M. B. Ros and J. L. Serrano and M. R. {de la Fuente} and C. L. Folcia},
2442 title = {Banana-shaped liquid crystals: a new field to explore},
2443 journal = {Journal of Materials Chemistry},
2444 year = {2005},
2445 volume = {15},
2446 pages = {5093-5098},
2447 number = {48},
2448 abstract = {The recent literature in the field of liquid crystals shows that banana-shaped
2449 mesogenic materials represent a bewitching and stimulating field
2450 of research that is interesting both academically and in terms of
2451 applications. Numerous topics are open to investigation in this
2452 area because of the rich phenomenology and new possibilities that
2453 these materials offer. The principal concepts in this area are reviewed
2454 along with recent results. In addition, new directions to stimulate
2455 further research activities are highlighted.},
2456 annote = {990XA Times Cited:3 Cited References Count:72},
2457 issn = {0959-9428},
2458 uri = {<Go to ISI>://000233775500001},
2459 }
2460
2461 @ARTICLE{Roy2005,
2462 author = {A. Roy and N. V. Madhusudana},
2463 title = {A frustrated packing model for the B-6-B-1-SmAP(A) sequence of phases
2464 in banana shaped molecules},
2465 journal = {European Physical Journal E},
2466 year = {2005},
2467 volume = {18},
2468 pages = {253-258},
2469 number = {3},
2470 month = {Nov},
2471 abstract = {A vast majority of compounds with bent core or banana shaped molecules
2472 exhibit the phase sequence B-6-B-1-B-2 as the chain length is increased
2473 in a homologous series. The B-6 phase has an intercalated fluid
2474 lamellar structure with a layer spacing of half the molecular length.
2475 The B-1 phase has a two dimensionally periodic rectangular columnar
2476 structure. The B-2 phase has a monolayer fluid lamellar structure
2477 with molecules tilted with respect to the layer normal. Neglecting
2478 the tilt order of the molecules in the B-2 phase, we have developed
2479 a frustrated packing model to describe this phase sequence qualitatively.
2480 The model has some analogy with that of the frustrated smectics
2481 exhibited by highly polar rod like molecules.},
2482 annote = {985FW Times Cited:0 Cited References Count:30},
2483 issn = {1292-8941},
2484 uri = {<Go to ISI>://000233363300002},
2485 }
2486
2487 @ARTICLE{Ryckaert1977,
2488 author = {J. P. Ryckaert and G. Ciccotti and H. J. C. Berendsen},
2489 title = {Numerical-Integration of Cartesian Equations of Motion of a System
2490 with Constraints - Molecular-Dynamics of N-Alkanes},
2491 journal = {Journal of Computational Physics},
2492 year = {1977},
2493 volume = {23},
2494 pages = {327-341},
2495 number = {3},
2496 annote = {Cz253 Times Cited:3680 Cited References Count:7},
2497 issn = {0021-9991},
2498 uri = {<Go to ISI>://A1977CZ25300007},
2499 }
2500
2501 @ARTICLE{Sagui1999,
2502 author = {C. Sagui and T. A. Darden},
2503 title = {Molecular dynamics simulations of biomolecules: Long-range electrostatic
2504 effects},
2505 journal = {Annual Review of Biophysics and Biomolecular Structure},
2506 year = {1999},
2507 volume = {28},
2508 pages = {155-179},
2509 abstract = {Current computer simulations of biomolecules typically make use of
2510 classical molecular dynamics methods, as a very large number (tens
2511 to hundreds of thousands) of atoms are involved over timescales
2512 of many nanoseconds. The methodology for treating short-range bonded
2513 and van der Waals interactions has matured. However, long-range
2514 electrostatic interactions still represent a bottleneck in simulations.
2515 In this article, we introduce the basic issues for an accurate representation
2516 of the relevant electrostatic interactions. In spite of the huge
2517 computational time demanded by most biomolecular systems, it is
2518 no longer necessary to resort to uncontrolled approximations such
2519 as the use of cutoffs. In particular, we discuss the Ewald summation
2520 methods, the fast particle mesh methods, and the fast multipole
2521 methods. We also review recent efforts to understand the role of
2522 boundary conditions in systems with long-range interactions, and
2523 conclude with a short perspective on future trends.},
2524 annote = {213KJ Times Cited:126 Cited References Count:73},
2525 issn = {1056-8700},
2526 uri = {<Go to ISI>://000081271400008},
2527 }
2528
2529 @ARTICLE{Sandu1999,
2530 author = {A. Sandu and T. Schlick},
2531 title = {Masking resonance artifacts in force-splitting methods for biomolecular
2532 simulations by extrapolative Langevin dynamics},
2533 journal = {Journal of Computational Physics},
2534 year = {1999},
2535 volume = {151},
2536 pages = {74-113},
2537 number = {1},
2538 month = {May 1},
2539 abstract = {Numerical resonance artifacts have become recognized recently as a
2540 limiting factor to increasing the timestep in multiple-timestep
2541 (MTS) biomolecular dynamics simulations. At certain timesteps correlated
2542 to internal motions (e.g., 5 fs, around half the period of the fastest
2543 bond stretch, T-min), visible inaccuracies or instabilities can
2544 occur. Impulse-MTS schemes are vulnerable to these resonance errors
2545 since large energy pulses are introduced to the governing dynamics
2546 equations when the slow forces are evaluated. We recently showed
2547 that such resonance artifacts can be masked significantly by applying
2548 extrapolative splitting to stochastic dynamics. Theoretical and
2549 numerical analyses of force-splitting integrators based on the Verlet
2550 discretization are reported here for linear models to explain these
2551 observations and to suggest how to construct effective integrators
2552 for biomolecular dynamics that balance stability with accuracy.
2553 Analyses for Newtonian dynamics demonstrate the severe resonance
2554 patterns of the Impulse splitting, with this severity worsening
2555 with the outer timestep. Delta t: Constant Extrapolation is generally
2556 unstable, but the disturbances do not grow with Delta t. Thus. the
2557 stochastic extrapolative combination can counteract generic instabilities
2558 and largely alleviate resonances with a sufficiently strong Langevin
2559 heat-bath coupling (gamma), estimates for which are derived here
2560 based on the fastest and slowest motion periods. These resonance
2561 results generally hold for nonlinear test systems: a water tetramer
2562 and solvated protein. Proposed related approaches such as Extrapolation/Correction
2563 and Midpoint Extrapolation work better than Constant Extrapolation
2564 only for timesteps less than T-min/2. An effective extrapolative
2565 stochastic approach for biomolecules that balances long-timestep
2566 stability with good accuracy for the fast subsystem is then applied
2567 to a biomolecule using a three-class partitioning: the medium forces
2568 are treated by Midpoint Extrapolation via position Verlet, and the
2569 slow forces are incorporated by Constant Extrapolation. The resulting
2570 algorithm (LN) performs well on a solvated protein system in terms
2571 of thermodynamic properties and yields an order of magnitude speedup
2572 with respect to single-timestep Langevin trajectories. Computed
2573 spectral density functions also show how the Newtonian modes can
2574 be approximated by using a small gamma in the range Of 5-20 ps(-1).
2575 (C) 1999 Academic Press.},
2576 annote = {194FM Times Cited:14 Cited References Count:32},
2577 issn = {0021-9991},
2578 uri = {<Go to ISI>://000080181500004},
2579 }
2580
2581 @ARTICLE{Satoh1996,
2582 author = {K. Satoh and S. Mita and S. Kondo},
2583 title = {Monte Carlo simulations using the dipolar Gay-Berne model: Effect
2584 of terminal dipole moment on mesophase formation},
2585 journal = {Chemical Physics Letters},
2586 year = {1996},
2587 volume = {255},
2588 pages = {99-104},
2589 number = {1-3},
2590 month = {Jun 7},
2591 abstract = {The effects of dipole-dipole interaction on mesophase formation are
2592 investigated with a Monte Carlo simulation using the dipolar Gay-Berne
2593 potential. It is shown that the dipole moment at the end of a molecule
2594 causes a shift in the nematic-isotropic transition toward higher
2595 temperature and a spread of the temperature range of the nematic
2596 phase and that layer structures with various interdigitations are
2597 formed in the smectic phase.},
2598 annote = {Uq975 Times Cited:32 Cited References Count:33},
2599 issn = {0009-2614},
2600 uri = {<Go to ISI>://A1996UQ97500017},
2601 }
2602
2603 @ARTICLE{Shen2002,
2604 author = {M. Y. Shen and K. F. Freed},
2605 title = {Long time dynamics of met-enkephalin: Comparison of explicit and
2606 implicit solvent models},
2607 journal = {Biophysical Journal},
2608 year = {2002},
2609 volume = {82},
2610 pages = {1791-1808},
2611 number = {4},
2612 month = {Apr},
2613 abstract = {Met-enkephalin is one of the smallest opiate peptides. Yet, its dynamical
2614 structure and receptor docking mechanism are still not well understood.
2615 The conformational dynamics of this neuron peptide in liquid water
2616 are studied here by using all-atom molecular dynamics (MID) and
2617 implicit water Langevin dynamics (LD) simulations with AMBER potential
2618 functions and the three-site transferable intermolecular potential
2619 (TIP3P) model for water. To achieve the same simulation length in
2620 physical time, the full MID simulations require 200 times as much
2621 CPU time as the implicit water LID simulations. The solvent hydrophobicity
2622 and dielectric behavior are treated in the implicit solvent LD simulations
2623 by using a macroscopic solvation potential, a single dielectric
2624 constant, and atomic friction coefficients computed using the accessible
2625 surface area method with the TIP3P model water viscosity as determined
2626 here from MID simulations for pure TIP3P water. Both the local and
2627 the global dynamics obtained from the implicit solvent LD simulations
2628 agree very well with those from the explicit solvent MD simulations.
2629 The simulations provide insights into the conformational restrictions
2630 that are associated with the bioactivity of the opiate peptide dermorphin
2631 for the delta-receptor.},
2632 annote = {540MH Times Cited:36 Cited References Count:45},
2633 issn = {0006-3495},
2634 uri = {<Go to ISI>://000174932400010},
2635 }
2636
2637 @ARTICLE{Shillcock2005,
2638 author = {J. C. Shillcock and R. Lipowsky},
2639 title = {Tension-induced fusion of bilayer membranes and vesicles},
2640 journal = {Nature Materials},
2641 year = {2005},
2642 volume = {4},
2643 pages = {225-228},
2644 number = {3},
2645 month = {Mar},
2646 annote = {901QJ Times Cited:9 Cited References Count:23},
2647 issn = {1476-1122},
2648 uri = {<Go to ISI>://000227296700019},
2649 }
2650
2651 @ARTICLE{Shimada1993,
2652 author = {J. Shimada and H. Kaneko and T. Takada},
2653 title = {Efficient Calculations of Coulombic Interactions in Biomolecular
2654 Simulations with Periodic Boundary-Conditions},
2655 journal = {Journal of Computational Chemistry},
2656 year = {1993},
2657 volume = {14},
2658 pages = {867-878},
2659 number = {7},
2660 month = {Jul},
2661 abstract = {To make improved treatments of electrostatic interactions in biomacromolecular
2662 simulations, two possibilities are considered. The first is the
2663 famous particle-particle and particle-mesh (PPPM) method developed
2664 by Hockney and Eastwood, and the second is a new one developed here
2665 in their spirit but by the use of the multipole expansion technique
2666 suggested by Ladd. It is then numerically found that the new PPPM
2667 method gives more accurate results for a two-particle system at
2668 small separation of particles. Preliminary numerical examination
2669 of the various computational methods for a single configuration
2670 of a model BPTI-water system containing about 24,000 particles indicates
2671 that both of the PPPM methods give far more accurate values with
2672 reasonable computational cost than do the conventional truncation
2673 methods. It is concluded the two PPPM methods are nearly comparable
2674 in overall performance for the many-particle systems, although the
2675 first method has the drawback that the accuracy in the total electrostatic
2676 energy is not high for configurations of charged particles randomly
2677 generated.},
2678 annote = {Lh164 Times Cited:27 Cited References Count:47},
2679 issn = {0192-8651},
2680 uri = {<Go to ISI>://A1993LH16400011},
2681 }
2682
2683 @ARTICLE{Skeel2002,
2684 author = {R. D. Skeel and J. A. Izaguirre},
2685 title = {An impulse integrator for Langevin dynamics},
2686 journal = {Molecular Physics},
2687 year = {2002},
2688 volume = {100},
2689 pages = {3885-3891},
2690 number = {24},
2691 month = {Dec 20},
2692 abstract = {The best simple method for Newtonian molecular dynamics is indisputably
2693 the leapfrog Stormer-Verlet method. The appropriate generalization
2694 to simple Langevin dynamics is unclear. An analysis is presented
2695 comparing an 'impulse method' (kick; fluctuate; kick), the 1982
2696 method of van Gunsteren and Berendsen, and the Brunger-Brooks-Karplus
2697 (BBK) method. It is shown how the impulse method and the van Gunsteren-Berendsen
2698 methods can be implemented as efficiently as the BBK method. Other
2699 considerations suggest that the impulse method is the best basic
2700 method for simple Langevin dynamics, with the van Gunsteren-Berendsen
2701 method a close contender.},
2702 annote = {633RX Times Cited:8 Cited References Count:22},
2703 issn = {0026-8976},
2704 uri = {<Go to ISI>://000180297200014},
2705 }
2706
2707 @ARTICLE{Skeel1997,
2708 author = {R. D. Skeel and G. H. Zhang and T. Schlick},
2709 title = {A family of symplectic integrators: Stability, accuracy, and molecular
2710 dynamics applications},
2711 journal = {Siam Journal on Scientific Computing},
2712 year = {1997},
2713 volume = {18},
2714 pages = {203-222},
2715 number = {1},
2716 month = {Jan},
2717 abstract = {The following integration methods for special second-order ordinary
2718 differential equations are studied: leapfrog, implicit midpoint,
2719 trapezoid, Stormer-Verlet, and Cowell-Numerov. We show that all
2720 are members, or equivalent to members, of a one-parameter family
2721 of schemes. Some methods have more than one common form, and we
2722 discuss a systematic enumeration of these forms. We also present
2723 a stability and accuracy analysis based on the idea of ''modified
2724 equations'' and a proof of symplecticness. It follows that Cowell-Numerov
2725 and ''LIM2'' (a method proposed by Zhang and Schlick) are symplectic.
2726 A different interpretation of the values used by these integrators
2727 leads to higher accuracy and better energy conservation. Hence,
2728 we suggest that the straightforward analysis of energy conservation
2729 is misleading.},
2730 annote = {We981 Times Cited:30 Cited References Count:35},
2731 issn = {1064-8275},
2732 uri = {<Go to ISI>://A1997WE98100012},
2733 }
2734
2735 @ARTICLE{Tao2005,
2736 author = {Y. G. Tao and W. K. {den Otter} and J. T. Padding and J. K. G. Dhont
2737 and W. J. Briels},
2738 title = {Brownian dynamics simulations of the self- and collective rotational
2739 diffusion coefficients of rigid long thin rods},
2740 journal = {Journal of Chemical Physics},
2741 year = {2005},
2742 volume = {122},
2743 pages = {-},
2744 number = {24},
2745 month = {Jun 22},
2746 abstract = {Recently a microscopic theory for the dynamics of suspensions of long
2747 thin rigid rods was presented, confirming and expanding the well-known
2748 theory by Doi and Edwards [The Theory of Polymer Dynamics (Clarendon,
2749 Oxford, 1986)] and Kuzuu [J. Phys. Soc. Jpn. 52, 3486 (1983)]. Here
2750 this theory is put to the test by comparing it against computer
2751 simulations. A Brownian dynamics simulation program was developed
2752 to follow the dynamics of the rods, with a length over a diameter
2753 ratio of 60, on the Smoluchowski time scale. The model accounts
2754 for excluded volume interactions between rods, but neglects hydrodynamic
2755 interactions. The self-rotational diffusion coefficients D-r(phi)
2756 of the rods were calculated by standard methods and by a new, more
2757 efficient method based on calculating average restoring torques.
2758 Collective decay of orientational order was calculated by means
2759 of equilibrium and nonequilibrium simulations. Our results show
2760 that, for the currently accessible volume fractions, the decay times
2761 in both cases are virtually identical. Moreover, the observed decay
2762 of diffusion coefficients with volume fraction is much quicker than
2763 predicted by the theory, which is attributed to an oversimplification
2764 of dynamic correlations in the theory. (c) 2005 American Institute
2765 of Physics.},
2766 annote = {943DN Times Cited:3 Cited References Count:26},
2767 issn = {0021-9606},
2768 uri = {<Go to ISI>://000230332400077},
2769 }
2770
2771 @BOOK{Tolman1979,
2772 title = {The Principles of Statistical Mechanics},
2773 publisher = {Dover Publications, Inc.},
2774 year = {1979},
2775 author = {R.~C. Tolman},
2776 address = {New York},
2777 chapter = {2},
2778 pages = {19-22},
2779 }
2780
2781 @ARTICLE{Tu1995,
2782 author = {K. Tu and D. J. Tobias and M. L. Klein},
2783 title = {Constant pressure and temperature molecular dynamics simulation of
2784 a fully hydrated liquid crystal phase dipalmitoylphosphatidylcholine
2785 bilayer},
2786 journal = {Biophysical Journal},
2787 year = {1995},
2788 volume = {69},
2789 pages = {2558-2562},
2790 number = {6},
2791 month = {Dec},
2792 abstract = {We report a constant pressure and temperature molecular dynamics simulation
2793 of a fully hydrated liquid crystal (L(alpha) phase bilayer of dipalmitoylphosphatidylcholine
2794 at 50 degrees C and 28 water molecules/lipid. We have shown that
2795 the bilayer is stable throughout the 1550-ps simulation and have
2796 demonstrated convergence of the system dimensions. Several important
2797 aspects of the bilayer structure have been investigated and compared
2798 favorably with experimental results. For example, the average positions
2799 of specific carbon atoms along the bilayer normal agree well with
2800 neutron diffraction data, and the electron density profile is in
2801 accord with x-ray diffraction results. The hydrocarbon chain deuterium
2802 order parameters agree reasonably well with NMR results for the
2803 middles of the chains, but the simulation predicts too much order
2804 at the chain ends. In spite of the deviations in the order parameters,
2805 the hydrocarbon chain packing density appears to be essentially
2806 correct, inasmuch as the area/lipid and bilayer thickness are in
2807 agreement with the most refined experimental estimates. The deuterium
2808 order parameters for the glycerol and choline groups, as well as
2809 the phosphorus chemical shift anisotropy, are in qualitative agreement
2810 with those extracted from NMR measurements.},
2811 annote = {Tv018 Times Cited:108 Cited References Count:34},
2812 issn = {0006-3495},
2813 uri = {<Go to ISI>://A1995TV01800037},
2814 }
2815
2816 @ARTICLE{Tuckerman1992,
2817 author = {M. Tuckerman and B. J. Berne and G. J. Martyna},
2818 title = {Reversible Multiple Time Scale Molecular-Dynamics},
2819 journal = {Journal of Chemical Physics},
2820 year = {1992},
2821 volume = {97},
2822 pages = {1990-2001},
2823 number = {3},
2824 month = {Aug 1},
2825 abstract = {The Trotter factorization of the Liouville propagator is used to generate
2826 new reversible molecular dynamics integrators. This strategy is
2827 applied to derive reversible reference system propagator algorithms
2828 (RESPA) that greatly accelerate simulations of systems with a separation
2829 of time scales or with long range forces. The new algorithms have
2830 all of the advantages of previous RESPA integrators but are reversible,
2831 and more stable than those methods. These methods are applied to
2832 a set of paradigmatic systems and are shown to be superior to earlier
2833 methods. It is shown how the new RESPA methods are related to predictor-corrector
2834 integrators. Finally, we show how these methods can be used to accelerate
2835 the integration of the equations of motion of systems with Nose
2836 thermostats.},
2837 annote = {Je891 Times Cited:680 Cited References Count:19},
2838 issn = {0021-9606},
2839 uri = {<Go to ISI>://A1992JE89100044},
2840 }
2841
2842 @BOOK{Varadarajan1974,
2843 title = {Lie groups, Lie algebras, and their representations},
2844 publisher = {Prentice-Hall},
2845 year = {1974},
2846 author = {V.S. Varadarajan},
2847 address = {New York},
2848 }
2849
2850 @ARTICLE{Wegener1979,
2851 author = {W.~A. Wegener, V.~J. Koester and R.~M. Dowben},
2852 title = {A general ellipsoid can not always serve as a modle for the rotational
2853 diffusion properties of arbitrary shaped rigid molecules},
2854 journal = {Proc. Natl. Acad. Sci.},
2855 year = {1979},
2856 volume = {76},
2857 pages = {6356-6360},
2858 number = {12},
2859 }
2860
2861 @ARTICLE{Withers2003,
2862 author = {I. M. Withers},
2863 title = {Effects of longitudinal quadrupoles on the phase behavior of a Gay-Berne
2864 fluid},
2865 journal = {Journal of Chemical Physics},
2866 year = {2003},
2867 volume = {119},
2868 pages = {10209-10223},
2869 number = {19},
2870 month = {Nov 15},
2871 abstract = {The effects of longitudinal quadrupole moments on the formation of
2872 liquid crystalline phases are studied by means of constant NPT Monte
2873 Carlo simulation methods. The popular Gay-Berne model mesogen is
2874 used as the reference fluid, which displays the phase sequences
2875 isotropic-smectic A-smectic B and isotropic-smectic B at high (T*=2.0)
2876 and low (T*=1.5) temperatures, respectively. With increasing quadrupole
2877 magnitude the smectic phases are observed to be stabilized with
2878 respect to the isotropic liquid, while the smectic B is destabilized
2879 with respect to the smectic A. At the lower temperature, a sufficiently
2880 large quadrupole magnitude results in the injection of the smectic
2881 A phase into the phase sequence and the replacement of the smectic
2882 B phase by the tilted smectic J phase. The nematic phase is also
2883 injected into the phase sequence at both temperatures considered,
2884 and ultimately for sufficiently large quadrupole magnitudes no coherent
2885 layered structures were observed. The stabilization of the smectic
2886 A phase supports the commonly held belief that, while the inclusion
2887 of polar groups is not a prerequisite for the formation of the smectic
2888 A phase, quadrupolar interactions help to increase the temperature
2889 and pressure range for which the smectic A phase is observed. The
2890 quality of the layered structure is worsened with increasing quadrupole
2891 magnitude. This behavior, along with the injection of the nematic
2892 phase into the phase sequence, indicate that the general tendency
2893 of the quadrupolar interactions is to destabilize the layered structure.
2894 A pressure dependence upon the smectic layer spacing is observed.
2895 This behavior is in much closer agreement with experimental findings
2896 than has been observed previously for nonpolar Gay-Berne and hard
2897 spherocylinder models. (C) 2003 American Institute of Physics.},
2898 annote = {738EF Times Cited:3 Cited References Count:43},
2899 issn = {0021-9606},
2900 uri = {<Go to ISI>://000186273200027},
2901 }
2902
2903 @ARTICLE{Wolf1999,
2904 author = {D. Wolf and P. Keblinski and S. R. Phillpot and J. Eggebrecht},
2905 title = {Exact method for the simulation of Coulombic systems by spherically
2906 truncated, pairwise r(-1) summation},
2907 journal = {Journal of Chemical Physics},
2908 year = {1999},
2909 volume = {110},
2910 pages = {8254-8282},
2911 number = {17},
2912 month = {May 1},
2913 abstract = {Based on a recent result showing that the net Coulomb potential in
2914 condensed ionic systems is rather short ranged, an exact and physically
2915 transparent method permitting the evaluation of the Coulomb potential
2916 by direct summation over the r(-1) Coulomb pair potential is presented.
2917 The key observation is that the problems encountered in determining
2918 the Coulomb energy by pairwise, spherically truncated r(-1) summation
2919 are a direct consequence of the fact that the system summed over
2920 is practically never neutral. A simple method is developed that
2921 achieves charge neutralization wherever the r(-1) pair potential
2922 is truncated. This enables the extraction of the Coulomb energy,
2923 forces, and stresses from a spherically truncated, usually charged
2924 environment in a manner that is independent of the grouping of the
2925 pair terms. The close connection of our approach with the Ewald
2926 method is demonstrated and exploited, providing an efficient method
2927 for the simulation of even highly disordered ionic systems by direct,
2928 pairwise r(-1) summation with spherical truncation at rather short
2929 range, i.e., a method which fully exploits the short-ranged nature
2930 of the interactions in ionic systems. The method is validated by
2931 simulations of crystals, liquids, and interfacial systems, such
2932 as free surfaces and grain boundaries. (C) 1999 American Institute
2933 of Physics. [S0021-9606(99)51517-1].},
2934 annote = {189PD Times Cited:70 Cited References Count:34},
2935 issn = {0021-9606},
2936 uri = {<Go to ISI>://000079913000008},
2937 }
2938
2939 @ARTICLE{Yoshida1990,
2940 author = {H. Yoshida},
2941 title = {Construction of Higher-Order Symplectic Integrators},
2942 journal = {Physics Letters A},
2943 year = {1990},
2944 volume = {150},
2945 pages = {262-268},
2946 number = {5-7},
2947 month = {Nov 12},
2948 annote = {Ej798 Times Cited:492 Cited References Count:9},
2949 issn = {0375-9601},
2950 uri = {<Go to ISI>://A1990EJ79800009},
2951 }
2952