Abstract

The far-field thermal radiative transfer from porous SiC substrates filled with vacuum inclusions is explored using the FDTD approach within the spectral range of 400 nm to 20 μm wavelengths. The metamaterial (SiC) substrate is assumed to have corrugations with sizes 250 nm by 250 nm and nano-scale pores with equivalent diameters of 25, 50 and 67 nm. The impact of these structures on far-field thermal emission at 5 and 30 μm above the surface is quantified, in order to understand the possible use of modified surfaces for radiative cooling and energy management applications.

© 2015 Optical Society of America

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