中红外超表面用贵金属高熵合金

IF 10.1 1区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Pub Date : 2025-06-01 DOI:10.1016/j.eng.2025.01.017

Yoshiaki Nishijima , Teruaki Sudo , Yasutaka Matsuo , Saulius Juodkazis

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引用次数: 0

摘要

高熵合金（HEAs）是一种很有前途的光子材料。在这种应用中，介电常数对于数值研究是必不可少的。在这项工作中，我们通过实验确定了由五种贵金属（au, Ag, Cu， Pd和Pt）组成的HEA的复介电常数。测量是在宽波长光谱上进行的，跨越紫外线，可见光和中红外区域。实验、反射光谱的数值模拟以及吸收和散射截面的分析表明，利用这种高贵的HEA可以制造出完美的吸收体和发射体超表面。此外，晶体学研究清楚地表明形成了均匀的材料。合金的晶格常数和电子功函数分别为0.396 nm和（4.8±0.4）eV，表明合金混合良好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Noble Metal High-Entropy Alloy for Mid-Infrared Metasurfaces

High-entropy alloys (HEAs) are promising materials for photonic applications. In such applications, permittivity is essential for numerical studies. In this work, we experimentally determine the complex permittivity of an HEA composed of five noble metals—Au, Ag, Cu, Pd, and Pt. The measurements are conducted across a broad wavelength spectrum, spanning the ultraviolet, visible, and mid-infrared regions. The experiments, numerical simulations of reflection spectra, and analysis of absorption and scattering cross-sections reveal the potential for fabricating perfect absorber and emitter metasurfaces using this noble HEA. In addition, crystallography studies clearly show the formation of a uniform material. The lattice constant and electron work function of the alloy are found to be 0.396 nm and (4.8 ± 0.4) eV, respectively—results indicate that the formed HEA alloy is well mixed.

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来源期刊

Engineering Environmental Science-Environmental Engineering

自引率

1.60%

发文量

335

审稿时长

35 days

期刊介绍： Engineering, an international open-access journal initiated by the Chinese Academy of Engineering (CAE) in 2015, serves as a distinguished platform for disseminating cutting-edge advancements in engineering R&D, sharing major research outputs, and highlighting key achievements worldwide. The journal's objectives encompass reporting progress in engineering science, fostering discussions on hot topics, addressing areas of interest, challenges, and prospects in engineering development, while considering human and environmental well-being and ethics in engineering. It aims to inspire breakthroughs and innovations with profound economic and social significance, propelling them to advanced international standards and transforming them into a new productive force. Ultimately, this endeavor seeks to bring about positive changes globally, benefit humanity, and shape a new future.