文献类型：期刊文献

英文题名：Dynamically Tunable Structural Colors Enabled by Pixelated Programming of Soft Materials on Thickness

作者：Huang, Mengting[1,2];Wang, Yifei[1,2];Liu, Xuan[1,2];Zhang, Songyu[1];Yuan, Cong-Long[1,2];Hu, Hong-Long[3];Zheng, Zhi-Gang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：11

期号：19

外文期刊名：ADVANCED OPTICAL MATERIALS

收录：;EI(收录号：20232414205001);WOS:【SCI-EXPANDED(收录号:WOS:001004558400001)】；

基金：M.H. and Y.W. contributed equally to this study. The authors acknowledge the support from the National Key Research and Development Program of China (2022YFA1203700 and 2022YFA1405000), National Science Foundation of China (grant nos. 62275081, 62035008, 61822504, and 52272109), Innovation Program of Shanghai Municipal Education Commission, Scientific Committee of Shanghai (2021-01-07-00-02-E00107), "Shuguang Program" of Shanghai Education Development Foundation, and Shanghai Municipal Education Commission (21SG29).

语种：英文

外文关键词：dynamic tunability; liquid crystals; optical encryption; soft materials; structural color

摘要：Structural colors are widespread in nature and have become an important component of the lives. Considerable efforts have been made toward reversible color tuning, which underpins intriguing applications, including color displays, anti-counterfeiting, and information encryption. However, the limited size, complicated fabrication processes, and low modulation speeds of structural colors are the main obstacles to their further development. Herein, a facile method to realize dynamically tunable structural colors is presented, which are enabled by the pixelated programming of soft materials on thickness. Pixelated photoresist microarrays with different heights are obtained using a digitalized lithography technique, enabling delicate control over the thickness of the liquid crystal (LC) layers. Stimuli-responsive LCs endow structural colors with dynamic and reversible tunability and exhibit remarkable switching speeds with external stimuli. The proposed strategy sheds new light on dynamically tunable structural colors and promotes the development of optical anti-counterfeiting, thermal sensors, and advanced information encryption.