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Direct measurement of thermal emission from a fabry–perot cavity resonator in Journal of heat transfer, Vol. 134 N° 7 (Juillet 2012)
Direct measurement of thermal emission from a fabry–perot cavity resonator [texte imprimé] / L. P. Wang, Auteur ; S. Basu, Auteur ; Z. M. Zhang, Auteur . - 2012 . - 09 p.
heat transfer
Langues : Anglais (eng)
in Journal of heat transfer > Vol. 134 N° 7 (Juillet 2012) . - 09 p.
Mots-clés : high temperature thermal emission thin films wave interference Index. décimale : 536 Chaleur. Thermodynamique Résumé : There have been growing interests in selective control of thermal emission by using micro/nanostructures. The present study describes direct measurements of infrared thermal emission at elevated temperatures of an asymmetric Fabry–Perot resonator at variable angles for each polarization. The multilayered structure mainly contains a SiO2 optical cavity sandwiched between a thick (opaque) Au film and a thin Au film. Metallic adhesive and diffusion-barrier layers were deposited on a Si substrate before depositing the thick Au film. A dielectric protection layer was deposited atop the thin Au film to prevent oxidation at high temperatures. A SiC wafer was used as the reference to test the emittance measurement facility, which includes a heated sample holder, a blackbody source, mirror assembly, a polarizer, and a Fourier-transform infrared spectrometer with different detectors. The measured emittance spectra of the Fabry–Perot structure exhibit peak broadening and shifting as temperature increases; the mechanisms are elucidated by comparison with theoretical modeling. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000007 [...]
