Title :
Phonon wave-packet simulations of Ar/Kr interfaces
Author :
Roberts, N.A. ; Walker, D.G.
Author_Institution :
Dept. of Mech. Eng., Vanderbilt Univ., Nashville, TN, USA
Abstract :
The frequency- and direction-dependence of transmission coefficients at interfaces was investigated theoretically. The interfaces are formed by having two Lennard-Jones (L-J) materials differing in mass and interatomic potential equally divided at the center of an FCC lattice system. A single frequency wave-packet is generated at one end of the system and allowed to propagate through the system until all interactions with the interface are complete. The transmission coefficient is then calculated by comparing the energy of the packet that is transmitted with the original wave-packet. Results show a difference in transmission when the wave-packet originates from opposite sides.
Keywords :
Lennard-Jones potential; argon; interface phonons; krypton; Ar-Kr; Ar-Kr interfaces; Lennard-Jones materials; fcc lattice system; interatomic potential; phonon wave-packet simulations; single frequency wave-packet; transmission coefficients; Argon; Frequency; Lattices; Mechanical engineering; Phonons; Temperature control; Temperature dependence; Thermal conductivity; Thermal management; Thermal resistance;
Conference_Titel :
Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), 2010 12th IEEE Intersociety Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-5342-9
Electronic_ISBN :
1087-9870
DOI :
10.1109/ITHERM.2010.5501331
