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HEAT FLOW IN THIN FILMS VIA SURFACE PHONON-POLARITONS

Dye-Zone A Chen, Gang Chen
Frontiers in Heat and Mass Transfer (FHMT) 1 - 023005 (2010)


Abstract


We present a calculation of the thermally generated electromagnetic flux propagating along the in-plane direction of a polar, thin film. The approach is based on fluctuational electrodynamics and the fluctuation-dissipation theorem. We find that for silicon carbide films between 5 nm and 100 nm thick, the thinner films transport more in-plane flux due to the long propagation length of the anti-symmetric surface phonon-polariton mode. Comparison of results obtained from the fluctuation-dissipation approach and the kinetic theory approach shows favorable agreement.

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DOI: http://dx.doi.org/10.5098/hmt.v1.2.3005

ISSN: 2151-8629