Influence of roughness on near-field heat transfer between two plates

Svend-Age Biehs 1 Jean-Jacques Greffet 1
1 Laboratoire Charles Fabry de l'Institut d'Optique / Naphel
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
Abstract : The surface roughness correction to the near-field heat transfer between two rough bulk materials is discussed by using second-order perturbation theory. The results allow for estimating the impact of surface roughness to the heat transfer in recent experiments between two plates and between a microsphere and a plate (using the Derjaguin approximation). Furthermore, we show that the proximity approximation for describing rough surfaces is valid for distances much smaller than the correlation length of the surface roughness even if the heat transfer is dominated by the coupling of surface modes.
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Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 82, pp.245410. 〈10.1103/PhysRevB.82.245410〉
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Soumis le : mardi 15 décembre 2015 - 13:56:17
Dernière modification le : mardi 24 avril 2018 - 15:32:31
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Svend-Age Biehs, Jean-Jacques Greffet. Influence of roughness on near-field heat transfer between two plates. Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 82, pp.245410. 〈10.1103/PhysRevB.82.245410〉. 〈hal-00679137〉

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