材料科学
弹性体
掩蔽
光电子学
变形
吸收(声学)
宽带
伪装
多光谱图像
雷达
微波食品加热
光学
计算机科学
纳米技术
超材料
复合材料
电信
物理
人工智能
计算机视觉
作者
Xiuyue Yang,Liang Leilei,Chen Li,Baoshan Zhang,Yue Zhao,Shujuan Tan,Guangbin Ji
出处
期刊:Nano Letters
[American Chemical Society]
日期:2024-12-19
标识
DOI:10.1021/acs.nanolett.4c05494
摘要
Modern detection technology has driven camouflage technology toward multispectral compatibility and dynamic regulation. However, developing such stealth technologies is challenging due to different frequency-band principles. Here, this work proposes a design concept for a fluid-actuated multispectral compatible smart stealth device that employs a deformable mechanochromic layer/elastomer with a channeled dielectric layer. After fluid actuation, the deformable elastomer layer transmits mechanical strain to the mechanochromic layer, thereby altering the visible reflectance wavelengths in [568, 699] nm. Concurrently, the pumped-in liquid reconfigures the spatial structure parameter to alter microwave resonance and diffraction for dynamic radar absorption, enabling dynamic radar absorption with significant broadband absorption at [8.16, 18.0] GHz. Using the heat-absorption property also achieves dynamic infrared stealth, shown by a ΔT ≈ 16.5 °C temperature difference. Additionally, the device exhibits a rapid response time (∼1 s), excellent cycling performance (100 cycles), and programmability (10 codes), offering a new stealth strategy.
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