Thermal heat radiation,near-field energy density and near-field radiative heat transfer
of coated materials |
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Authors: | S-A Biehs |
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Institution: | 1.Institut für Physik, Carl von Ossietzky Universit?t,Oldenburg,Germany |
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Abstract: | We investigate the thermal radiation and thermal near-field energy
density of a metal-coated semi-infinite body for different substrates. We show that the surface polariton coupling within
the metal coating leads to an enhancement of the TM-mode part of the thermal near-field energy density when a polar
substrate is used. In this case the result obtained for a free standing metal film is retrieved. In contrast, in the case
of
a metal substrate there is no enhancement in the TM-mode part, as can also be explained within the framework
of surface plasmon coupling within the coating. Finally, we discuss the influence of the enhanced thermal energy density
on the near-field radiative heat transfer between a simple semi-infinite and a coated semi-infinite body for different
material combinations. |
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Keywords: | 44 40 +a Thermal radiation 78 66 -w Optical properties of specific thin films 05 40 -a Fluctuation phenomena random processes noise and Brownian motion 41 20 Jb Electromagnetic wave propagation radiowave propagation |
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