Open AccessSpatial and spectral distributions of thermal radiation emitted by a semi-infinite body and absorbed by a flat film
Author(s) -
Etienne Blandre,
PierreOlivier Chapuis,
Mathieu Francoeur,
Rodolphe Vaillon
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4919931
Subject(s) - thermophotovoltaic , thermal radiation , radiative transfer , near and far field , radiation , optics , coherence (philosophical gambling strategy) , computational physics , black body radiation , thermal , materials science , spectral power distribution , opacity , heat transfer , physics , radiative flux , mechanics , optoelectronics , meteorology , thermodynamics , common emitter , quantum mechanics
International audienceWe analyze the radiative power emitted by a semi-infinite medium and absorbed by a flat film located in its vicinity. In the near-field regime, if the film is thin enough, the surface waves at the rear interface of the film can contribute to the heat transfer. As a result, the absorbed power can be enhanced farther from the front surface. In the near-to-far field transition regime, temporal coherence of thermal radiation and the associated interferences can be used to shape the spectrum of the transferred radiative heat flux by selecting approriate geometrical parameters. These results highlight possibilities to control both the location where the radiative power is absorbed in the film and the spectral distribution, which are of paramount importance for applications such as near-field thermophotovoltaics
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