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DIRECTIONAL CHARACTERISTICS OF THERMAL RADIATION EMITTED FROM MICROSTRUCTURED SURFACE

DOI: 10.1615/ICHMT.2010.RAD-6.110
9 pages

Daisuke Hirashima
Dept. of Mechanical and Control Engineering, Tokyo Institute of Technology JSPS Research Fellow 2-12-1 Ookayama Meguro-ku, Tokyo, 152-8552 JAPAN

Katsunori Hanamura
Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Resumo

Directional spectral emittance of a microstructured surface (a periodically-grooved surface emitter) made of SiC was estimated through numerical simulation that solved the Maxwell’s equations. For a wavelength of 11.36 μm, a surface wave traveling in the emitter along the surface was coupled with the free-space electromagnetic wave propagating in the direction predicted from a relationship between emission angle, a wave vector of surface-phonon polaritons, and the groove period. The directional spectral emissivity of a plane emitter is also shown for comparison and verification of the modeling.

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