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Noble metal high entropy alloy for mid infrared metasurfaces

23 August 2023, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

We have experimentally determined the complex permittivity of a high entropy alloy (HEA) composed of five noble metals: Au, Ag, Cu, Pd, Pt. The permittivity was measured in a wide range of wavelengths from ultraviolet via visible to mid-infrared. The experiments and numerical simulation results show a possibility to create perfect absorber and emitter metasurfaces from such noble HEA. The lattice constant and electron work function of the noble HEA were determined to be 0.396 nm and 4.8 pm 0.4 eV, respectively.

Keywords

alloy materials
mid infrared metasurfaces
elipthometry

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Version History

Aug 23, 2023 Version 1

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The content is available under CC BY 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2023-bd4fm
D O I: 10.26434/chemrxiv-2023-bd4fm [opens in a new tab]

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) have declared ethics committee/IRB approval is not relevant to this content

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