Thermal heat radiation, near-field energy density and near-field radiative heat transfer of coated materials

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.

References in corpus (6)

• Measurement of the Temperature Dependence of the Casimir-Polder Force
• Near-field heat transfer in a scanning thermal microscope
• Radiative heat transfer between nanostructures
• Dissipative Van der Waals interaction between a small particle and a metal surface
• Non-contact friction between nanostructures
• Thermal radiation and near-field energy density of thin metallic films

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