摘要
Mechanoresponsive photonic crystals (MPCs) exhibit tunable optical properties and hold great promise for a wide range of applications. However, fabricating them in bulk form remains a significant challenge. In this study, a novel approach is presented for producing bulk MPCs with enhanced optical properties. By incorporating shear‐ordering into the 3D molding process, this study successfully fabricates bulk MPCs that display bright, saturated structural colors with 80% reflectance. The bulk MPCs are constructed layer‐by‐layer via successive shear‐printing using colloidal particles embedded in photocurable resins. Each layer is subjected to oscillatory shear facilitated by a modified 3D printing setup. This process creates a highly ordered face‐centered cubic lattice structure throughout the bulk material. The final product exhibits distinct colors on its various faces, depending on the lattice planes exposed at different orientations. The material is highly strain‐resilient, with pronounced color shifting in response to applied stress. A detailed experimental study of the shear‐ordering mechanism and the resulting structures is provided. This method offers an efficient way to fabricate bulk MPCs with optical performance comparable to the best thin films and can be extended to more complex shapes.
高峰
PhD
邱军军
PhD
姜心雨
PhD
安童
PhD
宋效坤
PhD
张漫遥
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.