Towards the ideal emitter: an inverse-designed metasurface for radiative cooling

Joeri Lenaerts; Vincent Ginis

doi:10.1117/12.2664794

7 June 2023 Towards the ideal emitter: an inverse-designed metasurface for radiative cooling

Joeri Lenaerts, Vincent Ginis

Author Affiliations +

Proceedings Volume 12568, Metamaterials XIV; 125680M (2023) https://doi.org/10.1117/12.2664794
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

The process of radiative cooling is enabled by a transparency window of the atmosphere in the wavelength range of 8-13 microns. When a material emits blackbody radiation at these wavelengths, its radiation goes through the atmosphere to outer space and the material cools. To have radiative cooling during the daytime, we need materials that are both very emissive in the atmospheric window and have a large reflectivity in the solar range of 0.3-2.5. In this work, we study how metasurfaces can be designed with exactly these properties. In order to make an optimal metasurface, we use inverse design techniques.

Conference Presentation

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Joeri Lenaerts and Vincent Ginis "Towards the ideal emitter: an inverse-designed metasurface for radiative cooling", Proc. SPIE 12568, Metamaterials XIV, 125680M (7 June 2023); https://doi.org/10.1117/12.2664794

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