Modified effective medium formulation for the thermal conductivity of nanocomposites

被引：232

作者：

Minnich, Austin ^{[1
]}

Chen, Gang ^{[1
]}

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 07期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1063/1.2771040

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This letter introduces a modified effective medium formulation for composites where the characteristic length of the inclusion is on the order of or smaller than the phonon mean free path. The formulation takes into account the increased interface scattering in the different phases of the nanocomposite and the thermal boundary resistance between the phases. The interface density of inclusions is introduced and is found to be a primary factor in determining the thermal conductivity. The predictions are in good agreement with results from Monte Carlo simulations and solutions to the Boltzmann equation. (C) 2007 American Institute of Physics.

引用

页数：3

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