Opt Lett. 2023 May 15;48(10):2756-2759. doi: 10.1364/OL.487282.
Learning from nature in terms of the camouflage used by species has enabled the continuous development of camouflage technologies for the visible to mid-infrared bands to prevent objects from being detected by sophisticated multispectral detectors, thereby avoiding potential threats. However, achieving visible and infrared dual-band camouflage without destructive interference while also realizing rapidly responsive adaptivity to the varying background remains challenging for high-demand camouflage systems. Here, we report a reconfigurable mechano-responsive soft film for dual-band camouflage. Its modulation ranges for visible transmittance and longwave infrared emittance can be up to 66.3% and 21%, respectively. Rigorous optical simulations are performed to elucidate the modulation mechanism of dual-band camouflage and identify the optimal wrinkles required to achieve the goal. The broadband modulation capability (figure of merit) of the camouflage film can be as high as 2.91. Other advantages, such as simple fabrication and a fast response, make this film a potential candidate for dual-band camouflage that can adapt to diverse environments.
从物种使用的伪装中学习，使得可见到中红外波段的伪装技术不断发展，以防止物体被复杂的多光谱探测器探测到，从而避免潜在的威胁。然而，对于高要求的伪装系统而言，在不产生破坏性干扰的情况下实现可见和红外双波段伪装，同时实现对不断变化的背景的快速响应适应性仍然具有挑战性。在这里，我们报告了一种用于双波段伪装的可重构机械响应软膜。其可见光透过率和长波红外发射率的调制范围分别可达 66.3%和 21%。进行了严格的光学模拟，以阐明双波段伪装的调制机制，并确定实现目标所需的最佳皱纹。伪装膜的宽带调制能力（品质因数）可高达 2.91。其他优点，如制造简单和响应迅速，使这种薄膜成为一种潜在的双波段伪装候选材料，能够适应各种环境。
