Wang Xin, Wang Ziting, Bai Licheng, Wang Huaiyu, Kang Lei, Werner Douglas H, Xu Ming, Li Bo, Li Jia, Yu Xue-Feng
Opt Express. 2018 Oct 15;26(21):27001-27013. doi: 10.1364/OE.26.027001.
A facile strategy to prepare high-quality colloidal photonic crystals (PCs) with good visibility is proposed. Based on a high refractive-index material (zinc sulfide), highly monodispersed colloidal particles are successfully produced and assembled into long-range ordered crystalline colloidal arrays. The carbon-based materials are in situ incorporated with the long-range ordered colloidal PCs, which endows PCs with the combined characteristics to simultaneously achieve an intense photonic stop band and excellent control of incoherent light scattering. Owing to these merits, the obtained ZnS colloidal PCs have demonstrated strong brightness with the maximum reflectivity of 98%. Moreover, the coloration, saturation, and viewing angle are all improved. This study provides a straightforward and cost-effective strategy to create structural colors with high-quality visibility, which is expected to facilitate future applications of colloidal PCs.
提出了一种制备具有良好可见性的高质量胶体光子晶体（PCs）的简便策略。基于高折射率材料（硫化锌），成功制备出高度单分散的胶体颗粒，并将其组装成长程有序的晶体胶体阵列。碳基材料与长程有序的胶体PCs原位结合，赋予PCs同时实现强烈光子禁带和对非相干光散射的出色控制的综合特性。由于这些优点，所制备的硫化锌胶体PCs具有很强的亮度，最大反射率达98%。此外，色彩、饱和度和视角均得到改善。本研究提供了一种直接且经济高效的策略来创造具有高质量可见性的结构色，有望推动胶体PCs的未来应用。
