本项目拟开展基于蛋白石及反蛋白石结构的光子晶体/水凝胶复合微球阵列的构建及其多重响应机制的研究。首先采用微流控方法，通过组装CdS纳米粒子构建CdS光子晶体微球，选择性填充四种类型响应性水凝胶，制备蛋白石结构光子晶体/水凝胶复合微球；研究外界刺激引起的水凝胶结构与微球阵列光子带隙之间的关系，构建多模块光子晶体/水凝胶微球阵列，实现不同刺激条件下的多重编码信息存储功能。再采用微流控方式制备SiO2光子晶体微球，与温度/pH双重响应水凝胶体系复合，刻蚀SiO2模板，制备反蛋白石结构光子晶体/水凝胶复合微球；通过外界刺激调控反蛋白石光子带隙，实现向长波及短波区域双向调制的刺激响应变色行为，最终将反蛋白石结构微球分散于溶剂中，经书写及打印方式，形成可调制变色识别显示图案。该项目的研究为光子晶体及水凝胶材料在多重信息存储、智能传感器及光电子显示器件等领域的应用提供重要参考价值。

This work will focus on photonic crystal/hydrogel composite microsphere arrays and their multi-controlling mechanism based on opal/inverse opal structures. First of all, we fabricate CdS photonic crystal microspheres by assembling CdS nanoparticles via microfluidics method. Furthermore, we design four types of hydrogels and selectively combine them with CdS photonic crystal microspheres separately, establishing hydrogel/photonic crystal composite microspheres based on opal structures. The relationship between hydrogel structure and photonic band gap of microsphere array under external stimuli will be discussed in detail. It can realize multiple coding function for information storage via bulk-assembly of photonic crystal/hydrogel microsphere array. Afterwards, we apply microfluidics method to assemble SiO2 photonic crystal microspheres identically and combine with temperature/pH-responsive hydrogel, thus fabricate hydrogel/photonic crystal composite microspheres based on inverse opal structures after photonic crystal template being etched. The stimuli-response color change with bidirectional modulation can be achieved by adjusting photonic band gap. Finally, the microspheres are dispersed into specific solvent to fabricate recognizable color change display patterns via writing and printing methods. This work has a significant value for the application of photonic crystals and hydrogels in multiple information storages, intelligent sensors, and photoelectron display devices.