Yang Xiuyue, Liang Leilei, Li Chen, Zhang Baoshan, Zhao Yue, Tan Shujuan, Ji Guangbin
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.
School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, P. R. China.
Nano Lett. 2025 Jan 8;25(1):569-577. doi: 10.1021/acs.nanolett.4c05494. Epub 2024 Dec 19.
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 Δ ≈ 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.
现代探测技术推动伪装技术朝着多光谱兼容性和动态调节方向发展。然而，由于不同的频段原理，开发此类隐身技术具有挑战性。在此，这项工作提出了一种流体驱动的多光谱兼容智能隐身装置的设计概念，该装置采用带有通道介电层的可变形机械变色层/弹性体。流体驱动后，可变形弹性体层将机械应变传递给机械变色层，从而改变[568, 699]纳米范围内的可见反射波长。同时，注入的液体重新配置空间结构参数，以改变微波共振和衍射，实现动态雷达吸收，在[8.16, 18.0]吉赫兹频段实现具有显著宽带吸收的动态雷达吸收。利用吸热特性还可实现动态红外隐身，温度差Δ≈16.5°C即可证明。此外，该装置具有快速响应时间（约1秒）、出色的循环性能（100次循环）和可编程性（10个代码），提供了一种新的隐身策略。
