4.6 Article

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

期刊

APPLIED PHYSICS LETTERS
卷 95, 期 3, 页码 -

出版社

AMER INST PHYSICS
DOI: 10.1063/1.3189087

关键词

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

资金

  1. Office of Naval Research
  2. MURI [N00014-07-1-0723]
  3. National Science Foundation
  4. Sandia National Laboratories Harry S. Truman Fellowship
  5. United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]

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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.

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