摘要
Ion‐conductive photonic crystal elastomers (ic‐PCEs) uniquely combine stimuli‐responsive color changes with electrical feedback, enabling transformative applications in wearable electronics and adaptive camouflage. However, their fabrication methods are limited. Here, a scalable swelling–deswelling approach is presented to fabricate ic‐PCEs by diffusing ionic liquids into pre‐assembled PCEs. When swelling, the polymer matrix is initially dilated to create intermolecular spaces, facilitating homogeneous ionic liquid diffusion. Once diffusion is complete, hydrogen bonding stabilizes the ionic liquid within the matrix, forming a conductive network beyond a threshold concentration. At ∼50 wt% ionic liquid content, the ic‐PCEs exhibit high ionic conductivity (∼0.46 mS cm −1 ) and a ∼55% enhancement in color brightness. The ic‐PCEs are highly stretchable, with a rapid recovery time (∼170 ms) and reversible color and electrical resistance responses to strain. Under 50% strain, the material shows a color shift from red to bluish‐green, a ∼20% decrease in reflection wavelength, and a ∼135% change in electrical resistance. Exceptional thermal stability and durability further ensure reliable performance. The potential of ic‐PCEs as wearable motion sensors applied to fingers and joints is demonstrated, showcasing their multifunctionality. This work provides a robust route for scalable ic‐PCE fabrication, opening new opportunities for advanced wearable devices and adaptive materials.
姜心雨
PhD
安童
PhD
高峰
PhD
邱军军
PhD
赵其斌
副教授
我的研究关注软功能材料中的介观结构调控及其光学、热学与力学功能。我们以胶体、颗粒组装和聚合物复合体系为主要材料平台，研究剪切、弯曲、拉伸和循环形变等外部力学场如何驱动微结构重排、结晶、晶格转变与取向选择，并进一步调控材料的结构色、光谱响应、热辐射特性和力学响应。通过将软物质物理、可规模化加工和结构—性能分析相结合，研究旨在发展可编程软光子材料与功能涂层，为自适应光学表面、光热调控、传感和机械编码材料提供新的设计思路.