文献类型：期刊文献

英文题名：Light-Patterned Crystallographic Direction of a Self-Organized 3D Soft Photonic Crystal

作者：Zheng, Zhi-Gang[1,2,3];Yuan, Cong-Long[1];Hu, Wei[4,5];Bisoyi, Hari Krishna[2,3];Tang, Ming-Jie[4,5];Liu, Zhen[1];Sun, Pei-Zhi[1];Yang, Wei-Qiang[1];Wang, Xiao-Qian[1];Shen, Dong[1];Li, Yannian[2,3];Ye, Fangfu[6,7];Lu, Yan-Qing[4,5];Li, Guoqiang[8,9];Li, Quan[2,3]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA;[3]Kent State Univ, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA;[4]Nanjing Univ, Natl Lab Solid State Microstruct, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;[5]Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China;[6]Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;[7]Chinese Acad Sci, CAS Key Lab Soft Matter Phys, Inst Phys, Beijing 100190, Peoples R China;[8]Ohio State Univ, Visual & Biomed Opt Lab, Dept Ophthalmol & Visual Sci, Columbus, OH 43212 USA;[9]Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43212 USA

年份：2017

卷号：29

期号：42

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20173504103177);WOS:【SCI-EXPANDED(收录号:WOS:000414756700011)】；

基金：Z.-G.Z., C.-L.Y., 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 Ohio Third Frontier, the National Science Foundation of China (Grant Nos. 61435008 and 61575063), Shanghai Rising-Star Program (Grant No. 17QA1401100), the National Institutes of Health (through National Eye Institute, Grant No. R01EY020641), and State of Ohio TVSF fund (through Grant No. TECG201604).

语种：英文

外文关键词：3D photonic crystals; crystallographic directions; photoalignment; self-organized cubic superstructures; stimuli-responsive

摘要：Uniform and patterned orientation of a crystallographic direction of ordered materials is of fundamental significance and of great interest for electronic and photonic applications. However, such orientation control is generally complicated and challenging with regard to inorganic and organic crystalline materials due to the occurrence of uncontrollable dislocations or defects. Achieving uniform lattice orientation in frustrated liquid-crystalline phases, like cubic blue phases, is a formidable task. Taming and tailoring the ordering of such soft, cubic lattices along predetermined or desired directions, and even imparting a prescribed pattern on lattice orientation, are more challenging, due to the entropy-domination attribute of soft matter. Herein, we disclose a facile way to realize designed micropatterning of a crystallographic direction of a soft, cubic liquid-crystal superstructure, exhibiting an alternate uniform and random orientation of the lattice crystallographic direction enabled by a photoalignment technique. Because of the rewritable trait of the photoalignment film, the pattern can be erased and rewritten on-demand by light. Such an oriented soft lattice sensitively responds to various external stimuli such as temperature, electric field, and light irradiation. Furthermore, advanced reflective photonic applications are achieved based on the patterned crystallographic orientation of the cubic blue phase, soft lattice.