Bio‐Inspired Wrinkled Photonic Elastomer with Superior Controllable and Mechanically Stable Structure for Multi‐Mode Color Display
Bio‐Inspired Wrinkled Photonic Elastomer with Superior Controllable and Mechanically Stable Structure for Multi‐Mode Color Display
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受生物启发的皱纹光子弹性体具有卓越的可控性和机械稳定结构，适用于多模式彩色显示
DOI：
10.1002/adfm.202207691
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发表时间：
2022-08
影响因子：
19
通讯作者：
Shufen Zhang
中科院分区：
文献类型：
--
作者：
Ruicheng Lin;Yong Qi;Donghui Kou;Wei Ma;Shufen Zhang
颜色是生物体之间信息的极好载体。光子弹性体将抽象的力学信息转化为直观的颜色信息，在各种应用领域显示出巨大的潜力。然而，结构色的角度相关性和颜色转换模式的单调性影响了材料信息阅读的准确性和在多种应用场景中的适用性。在这里，受一种明亮的蓝色蜘蛛Poecilotheria metallica的启发，报道了一种新的褶皱光子弹性体结构。通过制备可拉伸的一维光子晶体（1DPC），实现了具有单向和全方位角度无关的结构色的光子弹性体。值得注意的是，在杂化1DPC和聚二甲基硅氧烷基底支撑下，褶皱光子结构和结构色在1000次应变循环后保持稳定，力致变色灵敏度可达3.25 nm/%，显示出较强的结构稳定性和应力下敏感的变形性能。更重要的是，通过综合操控光子薄膜的微褶皱结构和晶格间距，结构色可以仅通过单一应变方向实现延迟变色和不可见-可见可逆切换性能。该褶皱光子弹性体在视觉应变传感、可穿戴设备和信息加密等领域具有广泛的应用价值。此外，它提供了一个新的策略，光子材料的颜色调控。
Color is an excellent carrier of information between organisms. Photonic elastomers that convert abstract mechanical information into intuitive color information have shown great potential in various application fields. However, angular correlation of structural colors and monotonous color conversion mode affect the accuracy of material information reading and the applicability in diverse application scenarios. Here, inspired by a kind of bright blue spider‐ Poecilotheria metallica, a new wrinkled photonic elastomer structure is reported. Through wrinkling stretchable 1D photonic crystals (1DPCs), photonic elastomers with both one‐directional and omni‐directional angle‐independent brilliant structural colors are realized. It is worth noting that with the hybrid 1DPC and polydimethylsiloxane substrate support, the wrinkled photonic structure and structural color remain stable after 1000 strain cycles, and mechanochromic sensitivity can reach 3.25 nm/%, indicating strong structural stability and sensitive deformation performance under stress. More importantly, by comprehensively manipulating micro‐wrinkle structure and lattice spacing of the photonic films, the structural color can achieve delayed discoloration and invisible‐visible reversible switching performance only through a single strain direction. The proposed wrinkled photonic elastomers have a broad application value in the fields of visual strain sensing, wearable devices, and information encryption. Furthermore, it provides a new strategy for color regulation of photonic materials.
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