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Nanoscale heat flux between nanoporous materials

Abstract : By combining stochastic electrodynamics and the Maxwell-Garnett description for effective media we study the radiative heat transfer between two nanoporous materials. We show that the heat flux can be sig-nificantly enhanced by air inclusions, which we explain by:(a) the presence of additional surface waves that give rise to supplementary channels for heat transfer throughout the gap, (b) an increase in the contribution given by the ordinary surface waves at resonance, (c) and the appearance of frustrated modes over a broad spectral range. We generalize the known expression for the nanoscale heat flux for anisotropic metamaterials.
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Contributor : Jean-Jacques Greffet Connect in order to contact the contributor
Submitted on : Friday, May 27, 2016 - 4:09:52 PM
Last modification on : Sunday, June 26, 2022 - 12:05:39 PM
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Svend-Age Biehs, Philippe Ben-Abdallah, Felipe S.S. Rosa, Karl Joulain, Jean-Jacques Greffet. Nanoscale heat flux between nanoporous materials. Optics Express, Optical Society of America - OSA Publishing, 2011, 19 (S5), pp.A1088. ⟨10.1364/OE.19.0A1088⟩. ⟨hal-00821584⟩



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