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
研究兴趣包括胶体光子晶体组装、材料结构规则度调控、规则及不规则结构在不同条件下的演变过程及物理机理、光学材料及能源类材料制备、微纳结构材料的大面积制备方法、自然界中的功能结构及其在跨种演变视角下的生物进化学等。