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Spectrally-tailored thermal emitters in the mid-infrared are needed for applications including gas sensing. We experimentally demonstrate a spectrally-selective, electrically-driven thermal emitter based on an aligned carbon nanotube metamaterial. Hyperbolic nanoribbon resonators patterned in the nanotube metamaterial double as resistive heaters and provide resonant polarized thermal emission in the infrared. The width of the nanoribbon resonators and their angle relative to the nanotube alignment axis can be designed to tailor the resonant frequency of the thermal radiation. Because of the low thermal mass of this design, the emitted thermal radiation can be modulated at rates up to 1 MHz.
John A. Roberts,Po-Hsun Ho,Shangjie Yu, andJonathan Fan
"Spectrally-selective thermal radiation from electrically-driven infrared hyperbolic resonators", Proc. SPIE PC12011, High Contrast Metastructures XI, PC120110T (5 March 2022); https://doi.org/10.1117/12.2612683
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John A. Roberts, Po-Hsun Ho, Shangjie Yu, Jonathan Fan, "Spectrally-selective thermal radiation from electrically-driven infrared hyperbolic resonators," Proc. SPIE PC12011, High Contrast Metastructures XI, PC120110T (5 March 2022); https://doi.org/10.1117/12.2612683