Accession Number:

AD1006672

Title:

Extension of the Diffuse Mismatch Model for Thermal Boundary Conductance between Isotropic and Anisotropic Materials

Descriptive Note:

Journal Article - Open Access

Corporate Author:

University of Virginia Charlottesville United States

Personal Author(s):

• Duda,John C.
• Smoyer,Justin L.
• Norris,Pamela M.
• Hopkins,Patrick E.

Report Date:

2009-07-22

Pagination or Media Count:

3.0

Abstract:

This model is an extension of the diffuse mismatch model DMM, tailored to accurately predict thermal boundary conductance hBD 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 hBD 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.

Descriptors:

• vibrational spectra
• solid state physics
• specific heat
• graphitic materials

Subject Categories:

• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE