Extension of the diffuse mismatch model for thermal boundary conductance between isotropic and anisotropic materials

被引：82

作者：

Duda, John C. ^{[1
]}

Smoyer, Justin L. ^{[1
]}

Norris, Pamela M. ^{[1
]}

Hopkins, Patrick E. ^{[2
]}

机构：

[1] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA

[2] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 03期

基金：

美国国家科学基金会; 美国能源部;

关键词：

aluminium; elasticity; graphite; metal-insulator boundaries; specific heat; thermal conductivity; vibrational modes; GRAPHITE;

D O I：

10.1063/1.3189087

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This model is an extension of the diffuse mismatch model (DMM), tailored to accurately predict thermal boundary conductance (h(BD)) at interfaces where one material comprising the interface is characterized by high elastic anisotropy. Temperature-dependent specific heat is calculated with this vibrational model and compared to published values. Modifications to the DMM that incorporate the vibrational model are presented with predictions of h(BD) at a metal-graphite interface. This model slightly underestimates experimental data, as expected, as the large acoustic mismatch between metals and graphite suggests inelastic scattering, something the DMM does not take into account.

引用

页数：3

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