This model is an extension of the diffuse mismatch model (DMM), tailored to accurately predict thermal boundary conductance 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 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.
Extension of the diffuse mismatch model for thermal boundary conductance between isotropic and anisotropic materials
John C. Duda, Justin L. Smoyer, Pamela M. Norris, Patrick E. Hopkins; Extension of the diffuse mismatch model for thermal boundary conductance between isotropic and anisotropic materials. Appl. Phys. Lett. 20 July 2009; 95 (3): 031912. https://doi.org/10.1063/1.3189087
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