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.

中文翻译：

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流体驱动的纳米-微观-宏观结构变形可实现智能多光谱兼容隐身


现代检测技术推动伪装技术朝着多光谱兼容性和动态调节的方向发展。然而，由于频段原理不同，开发此类隐身技术具有挑战性。在这里，这项工作提出了一种流体驱动的多光谱兼容智能隐形装置的设计概念，该装置采用具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到机械变色层，从而改变 [568， 699] nm 的可见反射波长。同时，泵送的液体重新配置了空间结构参数，以改变微波共振和衍射以实现动态雷达吸收，从而在 [8.16， 18.0] GHz 时实现具有显着宽带吸收的动态雷达吸收。利用热吸收特性还可以实现动态红外隐身，≈ 16.5 °C 的温差 ΔT 表示。此外，该器件具有快速响应时间 （∼1 s）、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。