Phonon wave-packet simulations of Ar/Kr interfaces for thermal rectification

被引：22
|
作者：
Roberts, N. A. [1 ]
Walker, D. G. [1 ]
机构：
[1] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 12期
关键词：
MOLECULAR-DYNAMICS; DISPERSION; RECTIFIER; KRYPTON; ARGON; MODEL;
D O I：
10.1063/1.3517159
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The frequency and direction dependence of transmission coefficients at interfaces was investigated theoretically. The interfaces are formed by having two Lennard-Jones 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. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3517159]
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页数：7
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