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

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.

References in corpus (8)

• Near-field radiative heat transfer between a sphere and a substrate
• The Casimir effect within scattering theory
• A mesoscopic description of radiative heat transfer at the nanoscale
• Effects of spatial dispersion in near-field radiative heat transfer between two parallel metallic surfaces
• The Casimir force between rough metallic plates
• Roughness correction to the Casimir force : Beyond the Proximity Force Approximation
• Electromagnetic field correlations near a surface with a nonlocal optical response
• Near-field heat transfer between a nanoparticle and a rough surface

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• Radiative heat transfer between two dielectric nanogratings in the scattering approach
• On Super-Planckian thermal emission in far field regime
• Interplay of roughness/modulation and curvature at proximity
• Small distance expansion for radiative heat transfer between curved objects
• Heat transfer in granular media with weakly interacting particles
• Near-field radiative heat transfer between rough surfaces modeled using effective media with gradient distribution of dielectric function
• Precision Measurement of Sub-Continuum Gas Conduction within Micro-Confinements
• Re-estimation of thermal contact resistance considering near-field thermal radiation effect