文献类型：期刊文献

英文题名：Reversible On-Off of Chirality and Anisotropy in Patterned Coexistence of Achiral-Anisotropic and Chiral-Isotropic Soft Materials

作者：Mo, Qinyu[1];Liu, Binghui[1];Huang, Wenbin[1,2,3];Sun, Pei-Zhi[1];Li, Zhiying[1];Bisoyi, Hari Krishna[4,5];Shen, Dong[1];Zheng, Zhi-Gang[1];Lu, Yan-Qing[6];Li, Quan[4,5]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Soochow Univ, Sch Optoelect Sci & Engn, Suzhou 215006, Peoples R China;[3]Soochow 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;[6]Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct & Colleagu, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

年份：2020

卷号：8

期号：18

外文期刊名：ADVANCED OPTICAL MATERIALS

收录：;EI(收录号：20202708893100);WOS:【SCI-EXPANDED(收录号:WOS:000541507200001)】；

基金：Q.M., B.L., and W.H. contributed equally to this work. The authors acknowledge the support from the National Key Research and Development Program of China (2017YFA0303700), the National Science Foundation of China (grant nos. 61822504, 61575063, 61435008, and 51873060), the Shanghai Rising Star Program (grant no. 17QA1401100), and the State Key Laboratory of Applied Optics (no. M200-D-1716).

语种：英文

外文关键词：anisotropic phase; chirality; isotropic phase; soft matter; stimuli-responsive behavior

摘要：Achieving a coexistence of two or multiple phases of soft matters via a delicate trade-off of free energy and long-range order with one another has been inspiring abundant interest on fundamental sciences and engineering. In this work, a stable coexistence of the optically achiral-anisotropic liquid crystalline nematic phase and the optically chiral-isotropic liquid crystalline blue phase is proposed and demonstrated, with their distribution tailored in a micro-pattern by the developed localized micro-regional polymer templating technique. Such a stable patterned coexistence of the two different phases with a distinct molecular arrangement, optical chirality, and anisotropy is achieved depending on a delicate matching of the elastic energy on the interface between liquid crystals and polymer networks. In contrast to the majority of soft coexistence systems, a specific dynamic and reversible on-off response of chirality and anisotropy is observed in such a system driven by an electric field. The structure of patterned coexistence system in the presence and absence of external stimulation is explored by microscopy and optical technique, and furthermore, the prospective photonic applications are demonstrated. This investigation indicates another category of functional soft material with fantastic adaptive characteristics for application in optics, electronics, interface physics, and chemistry.