Superiority of metamaterial as an absorber and a heat generator

Wakana Kubo

doi:10.1117/12.2632979

3 October 2022 Superiority of metamaterial as an absorber and a heat generator

Wakana Kubo

Proceedings Volume PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX; PC121970U (2022) https://doi.org/10.1117/12.2632979
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

A metamaterial is an artificial material that works as an antenna that absorbs thermal radiation emitted from the surrounding medium and a transducer that converts the absorbed energy into local heating. The metamaterial absorber surface has a ultra-thin structure comparing to that of the incident wavelength, while it shows extraordinary absorption properties. We demonstrated the conversion of thermal energy into electricity through metamaterial thermoelectric conversion technique based on thermal radiation absorption by the metamaterial. The metamaterial thermoelectric conversion is a technique that generates electricity by extracting thermal energies from the surrounding medium. The metamaterial thermoelectric devices will pave the way to recover waste heat existing in the medium, such as air and water. However, similar thermoelectric conversion might be realized by other broadband absorber such as the carbon black. Here, we compared the ability to generate local heating of the metamaterial and the carbon black film to clarify the superiority of the metamaterial as an absorber and a transducer.

Conference Presentation

Citation Download Citation

Wakana Kubo "Superiority of metamaterial as an absorber and a heat generator", Proc. SPIE PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX, PC121970U (3 October 2022); https://doi.org/10.1117/12.2632979

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