文献类型：期刊文献

英文题名：Electrically tunable helicity of cholesteric heliconical superstructure [Invited]

作者：Yuan, Conglong[1];Huang, Wenbin[1,2,3];Wang, Xiaoqian[1];Shen, Dong[1];Zheng, Zhigang[1,4,5]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Suzhou Univ, Sch Optoelect Sci & Engn, Suzhou 215006, Peoples R China;[3]Suzhou Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215006, Peoples R China;[4]Kent State Univ, Adv Mat & Liquid Crystal Inst, Kent, OH 44242 USA;[5]Kent State Univ, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA

年份：2020

卷号：18

期号：8

外文期刊名：CHINESE OPTICS LETTERS

收录：;EI(收录号：20204709516998);WOS:【SCI-EXPANDED(收录号:WOS:000569164800004)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 61822504 and 51873060), the Shanghai Rising Star Program (No. 17QA1401100), and the Fundamental Research Funds for the Central Universities (No. JKM012016032).

语种：英文

外文关键词：cholesteric liquid crystal; heliconical superstructure; tunable reflection band; electro-optical materials

摘要：The dynamic manipulation of the helicity in a cholesteric helical superstructure could enable precise control over its physical and chemical properties, thus opening numerous possibilities for exploring multifunctional devices. When cholesteric material satisfies the sufficiently small bending elastic effect, an electrically induced deformation named the cholesteric heliconical superstructure is formed. Through theoretical and numerical analysis, we systematically studied the tunable helicity of the heliconical superstructure, including the evolution of the corresponding oblique angle and pitch length. To further confirm the optical properties, Berreman's 4 x 4 matrix method was employed to numerically analyze the corresponding structure reflection under the dual stimuli of chirality and electric field.