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Proceedings of the 8th International Symposium on Radiative Transfer RAD-16
June, 6-10, 2016, Cappadocia, Turkey

DOI: 10.1615/RAD-16


ISBN Print: 978-1-56700-458-8

ISSN Online: 2642-5629

ISSN Flash Drive: 2642-5661

VANADIUM DIOXIDE BASED FABRY-PEROT EMITTER FOR DYNAMIC RADIATIVE COOLING APPLICATIONS

pages 50-57
DOI: 10.1615/RAD-16.70
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SINOPSIS

An asymmetric Fabry-Perot emitter is proposed with a lossless dielectric spacer sandwiched between a vanadium dioxide (VO2) thin film and an opaque aluminum substrate. Switchable mid-infrared emittance has been achieved due to the insulator-to-metal transition of VO2. When VO2 is dielectric below 341 K, the structure is highly reflective, whereas a Fabry-Perot resonance cavity is formed with high broadband emissivity at 10 μm when VO2 becomes metallic above 345 K. The radiative properties are calculated via a uniaxial transfer matrix method and Bruggeman effective medium theory. This study will facilitate novel applications in building and spacecraft radiative cooling.

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