19 September 2013 Thermal infrared emitters by plasmonic metasurface
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The spectral control of thermal radiation is demonstrated using an array of sprit-ring resonators as plasmonic metasurface. Thermally excited plasmonic resonant modes in a meta-atom are found to enhance thermal radiation at specific wavelengths. From numerical simulations, the emissivity at the resonance can be tuned to blackbody level by tuning the coupling between a sprit-ring and a metal substrate. Since the thickness of the metasurface is significantly small compared to the wavelength, these devices are promising candidates for extremely thin film thermal emitters or efficient frequency-converters for wide range of the frequency from infrared to visible.
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J. Takahara, J. Takahara, Y. Ueba, Y. Ueba, "Thermal infrared emitters by plasmonic metasurface", Proc. SPIE 8818, Nanostructured Thin Films VI, 88180X (19 September 2013); doi: 10.1117/12.2025121; https://doi.org/10.1117/12.2025121

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