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A Thermokinetic approach to radiative heat transfer at the nanoscale
Pérez Madrid, Agustín; Lapas, L. C.; Rubí Capaceti, José Miguel
Universitat de Barcelona
Radiative heat exchange at the nanoscale presents a challenge for several areas due to its scope and nature. Here, we provide a thermokinetic description of microscale radiative energy transfer including phonon-photon coupling manifested through a non-Debye relaxation behavior. We show that a lognormal-like distribution of modes of relaxation accounts for this non-Debye relaxation behavior leading to the thermal conductance. We also discuss the validity of the fluctuation-dissipation theorem. The general expression for the thermal conductance we obtain fits existing experimental results with remarkable accuracy. Accordingly, our approach offers an overall explanation of radiative energy transfer through micrometric gaps regardless of geometrical configurations and distances.
Termodinàmica del desequilibri
Teoria quàntica
Propietats tèrmiques
Absorció de calor
Transferència d'energia
Nonequilibrium thermodynamics
Quantum theory
Thermal properties
Heat absorption
Energy transfer
cc-by (c) Pérez Madrid, Agustín et al., 2013
Public Library of Science (PLoS)

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