材料科学
制作
纳米技术
胶体
自组装
胶体晶体
使用寿命
结构着色
复合材料
化学工程
光子晶体
光电子学
医学
工程类
病理
替代医学
作者
Qixin Yang,Wei Ling,Yongkang Xu,Huanhui Chen,Hui Guo,Liubiao Zhong,Yejun Qiu
标识
DOI:10.1016/j.cej.2022.140591
摘要
Photonic crystals (PCs) could revolutionize the modern engineering field. However, the commonly used large-scale roll-to-roll fabrication techniques are limited by the utilization of complex materials and devices. In this work, a method combining evaporative self-assembly and roll-to-roll precision printing was used for the ultrafast fabrication of large-area colloidal crystals. In this process, hydrogen bonding and colloidal charge cooperate to promote the formation of highly ordered colloidal crystals from SiO2 particles with virtually crack-free textures. The as-fabricated PCs films exhibits excellent optical and mechanical properties, including uniform and saturated colors (1 > ΔE·ab for 27 orthogonal points), long service life (>12 months), a wide operating temperature range (25–90 °C), superior bending resistance (>190,000 cycles), good folding resistance (>320 cycles), and excellent reversibility (>27,000 cycles). This work provides new insights into the self-assembly of colloidal SiO2 particles that will enable the application of PCs films in the back covers of mobile phones and multicolor displays.
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