Metamaterial energy harvesting

Wakana Kubo

doi:10.1117/12.2620920

24 May 2022 Metamaterial energy harvesting

Wakana Kubo

Proceedings Volume PC12130, Metamaterials XIII; PC1213016 (2022) https://doi.org/10.1117/12.2620920
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Recycling low-temperature waste heat is a key issue to realize de-carbonization in our society. Nevertheless, conventional technologies including thermoelectric generators are incapable of gathering thermal energies from the surrounding environments. Here, we report metamaterial thermoelectric conversion driven by the thermal energies extracted from the surrounding environment, which can be available for energy harvesting. The metamaterial thermoelectric generator can extract thermal energies from the surrounding environment and convert them into electricity. The metamaterial thermoelectric generator consists of a bismuth telluride thermoelectric element loaded with metamaterial-fabricated copper electrode at one edge. The metamaterial arrays fabricated on the copper electrode absorb thermal radiation emitted from the surrounding environment, leading to local heat generation as a consequence of plasmon loss. The local heat propagates to the bismuth telluride thermoelectric element via the copper electrode, resulting in an additional thermal gradient across the thermoelectric element and generation of electricity. Previously, we numerically investigated the metamaterial thermoelectric conversion. In this report, we will show the experimental demonstration of metamaterial thermoelectric conversion.

Conference Presentation

Citation Download Citation

Wakana Kubo "Metamaterial energy harvesting", Proc. SPIE PC12130, Metamaterials XIII, PC1213016 (24 May 2022); https://doi.org/10.1117/12.2620920

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