Multi-Frequency Perfect Absorption by Ultra-Thin Time-Modulated Metasurfaces

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Conference article in proceedings
Date
2021-09-20
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Language
en
Pages
3
293-295
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2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
Abstract
Here, we study the interference phenomena produced in time-modulated metasurfaces when they are illuminated by multiple harmonics opening a new paradigm of coherent time-modulated metasurfaces. In particular, we obtain perfect absorption at multiple frequencies by inducing slow time modulation of a resistive sheet. Also, it will be shown that it is possible to fully tune the absorption by properly designing the modulation parameters.
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Funding Information: ACKNOWLEDGEMENT: This work was supported by the Academy of Finland under the grants 330957 and 330260. Also, the authors thank P. Jayathurathnage, G. Ptitcyn, X. Wang, and N. Ha-Van for having useful discussions. Publisher Copyright: © 2021 IEEE.
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Mostafa , M H , DIaz-Rubio , A , Mirmoosa , M S & Tretyakov , S A 2021 , Multi-Frequency Perfect Absorption by Ultra-Thin Time-Modulated Metasurfaces . in 2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021 . IEEE , pp. 293-295 , International Congress on Artificial Materials for Novel Wave Phenomena , New York , New York , United States , 20/09/2021 . https://doi.org/10.1109/Metamaterials52332.2021.9577137