Effect of percolation on thermal transport in nanotube composites

被引：86

作者：

Kumar, S. ^{[1
]}

Alam, M. A.

Murthy, J. Y.

机构：

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 10期

关键词：

D O I：

10.1063/1.2712428

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effective thermal conductivity of two-dimensional (2D) nanocomposites composed of carbon nanotubes (CNTs) dispersed in a host substrate is simulated to quantify the role of tube percolation on the thermal transport. The model is in excellent agreement with a 2D effective medium theory for low tube densities, but departs significantly from it when tube-tube interaction becomes significant. It is found that percolation effects may play a role for tube-tube and tube-substrate thermal resistance parameters typical of CNT composites. They are quantified in terms of a conductivity exponent for a range of governing parameters. (c) 2007 American Institute of Physics.

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