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
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。