摘要
Colloidal particle-assembled photonic crystals offer sustainable alternatives to traditional structural color materials, but their commercial use is limited by low optical quality and slow fabrication. We demonstrate that embedding colloidal particles in suitable matrix materials and adjusting particle volume fraction can accelerate fabrication by 10^2 −10^6 times while maintaining high optical performance. Using common materials such as glycerol and honey, we show that uniform photonic crystals with sharp 90% reflectance peaks can rapidly form under oscillatory shear induced by hand-flapping or roll-to-roll processing at meter-per-second speeds. A single shear oscillation within 0.05−0.5 s produces highly ordered structures that typically require thousands of oscillations. We analyze the mechanisms governing efficient photonic crystal assembly and outline practical principles for scalable production.
高峰
PhD
邱军军
PhD
安童
PhD
姜心雨
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.