| 15 |
|
radius (6603 atoms) and 40 {\AA} radius (15683 atoms) were |
| 16 |
|
constructed. These initial structures were relaxed to their |
| 17 |
|
equilibrium structures at 20 K for 20 ps and again at 300 K for 100 ps |
| 18 |
< |
sampling from a Maxwell-Boltzmann distribution at each temperature. |
| 18 |
> |
sampling from a Maxwell-Boltzmann distribution at each temperature. All simulations were conducted using the {\sc OOPSE} molecular dynamics package.\cite{Meineke:2004uq} |
| 19 |
|
|
| 20 |
|
To mimic the effects of the heating due to laser irradiation, the |
| 21 |
|
particles were allowed to melt by sampling velocities from the Maxwell |
| 124 |
|
Values for the interfacial conductance have been determined by a |
| 125 |
|
number of groups for similar nanoparticles and range from a low |
| 126 |
|
$87.5\times 10^{6}$ $(\mathrm{Wm^{-2}K^{-1}})$ to $120\times 10^{6}$ |
| 127 |
< |
$(\mathrm{Wm^{-2}K^{-1}})$.\cite{hartlandPrv2007} Similarly, Plech |
| 127 |
> |
$(\mathrm{Wm^{-2}K^{-1}})$.\cite{Wilson:2002uq} Similarly, Plech |
| 128 |
|
{\it et al.} reported a value for the interfacial conductance of |
| 129 |
|
$G=105\pm 15$ $(\mathrm{Wm^{-2}K^{-1}})$ and $G=130\pm 15$ |
| 130 |
|
$(\mathrm{Wm^{-2}K^{-1}})$ for Pt |
| 190 |
|
Embedded Atom Model ({\sc eam})~\cite{PhysRevB.33.7983} and |
| 191 |
|
Sutton-Chen ({\sc sc})~\cite{Chen90} potential have been used to study |
| 192 |
|
a wide range of phenomena in both bulk materials and |
| 193 |
< |
nanoparticles.\cite{Vardeman-II:2001jn,ShibataT._ja026764r} Both |
| 193 |
> |
nanoparticles.\cite{Vardeman-II:2001jn,ShibataT._ja026764r,Sankaranarayanan:2005lr,Chui:2003fk,Wang:2005qy,Medasani:2007uq} Both |
| 194 |
|
potentials are based on a model of a metal which treats the nuclei and |
| 195 |
|
core electrons as pseudo-atoms embedded in the electron density due to |
| 196 |
|
the valence electrons on all of the other atoms in the system. The |
