Metamaterial structure design based on genetic algorithm and phase change material GST for multispectral camouflage

IF 2.7 Q2 PHYSICS, CONDENSED MATTER

Micro and Nanostructures Pub Date : 2024-09-10 DOI:10.1016/j.micrna.2024.207985

Yaxin Zhou , Xin Li , Sihan Nie , Pengfei Sun , Lijing Su , Yang Gao

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Abstract

This study proposes a multispectral camouflage tunable multilayer film metamaterial (TMFM) with thermal management function based on genetic algorithm (GA), which is composed of ZnS/YbF₃/Ge/Ge₂Sb₂Te₅ (GST)/Au multilayer film. Through numerical analysis, we assess its efficacy in visible-infrared compatibility camouflage and radiative heat dissipation. Within the visible light band, different structural colors can be produced by adjusting the thickness of the ZnS film. The average emissivity within the 3–5 μm and 8–14 μm infrared bands is measured at 0.04 and 0.14, respectively. The low emissivity facilitates effective thermal management. Moreover, an average emissivity of 0.52 within the 5–8 μm range is instrumental in achieving efficient radiation heat dissipation. Laser stealth capability is further enhanced, with an emissivity reaching 0.70 at 10.6 μm. Therefore, this metamaterial structure has broad application prospects in both military and civilian industrial fields.

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基于遗传算法和相变材料 GST 的多光谱伪装超材料结构设计

本研究基于遗传算法（GA）提出了一种具有热管理功能的多光谱伪装可调多层薄膜超材料（TMFM），它由 ZnS/YbF3/Ge/Ge2Sb2Te5 (GST)/Au 多层薄膜组成。通过数值分析，我们评估了其在可见光-红外兼容伪装和辐射散热方面的功效。在可见光波段内，通过调整 ZnS 薄膜的厚度可以产生不同的结构颜色。据测量，3-5 微米和 8-14 微米红外波段的平均发射率分别为 0.04 和 0.14。低发射率有利于有效的热管理。此外，5-8 μm 范围内 0.52 的平均发射率也有助于实现高效的辐射散热。10.6 μm 处的发射率达到 0.70，进一步增强了激光的隐形能力。因此，这种超材料结构在军事和民用工业领域都具有广阔的应用前景。

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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来源期刊

Micro and Nanostructures

CiteScore

6.50

自引率

0.00%

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