文献类型：期刊文献

英文题名：Stimulated transformation of soft helix among helicoidal, heliconical, and their inverse helices

作者：Yuan, Cong-long[1];Huang, Wenbin[1,2,3];Zheng, Zhi-gang[1,4,5,6];Liu, Binghui[1];Bisoyi, Hari Krishna[7,8];Li, Yannian[7,8];Shen, Dong[1];Lu, Yanqing[4,5];Li, Quan[7,8]

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]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, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Jilin, Peoples R China;[7]Kent State Univ, Adv Mat & Liquid Crystal Inst, Kent, OH 44242 USA;[8]Kent State Univ, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA

年份：2019

卷号：5

期号：10

外文期刊名：SCIENCE ADVANCES

收录：;EI(收录号：20194107520132);WOS:【SCI-EXPANDED(收录号:WOS:000491132700028)】；

基金：We acknowledge 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), the State Key Laboratory of Applied Optics (no. M200-D-1716), and the Ohio Third Frontier.

语种：英文

摘要：Dynamic modulation of soft helix in terms of the molecular organization, handedness, and pitch length could result in a sophisticated control over its functions, opening numerous possibilities toward the exploration of previously unidentified applications. Here, we report a dynamic and reversible transformation of a soft helical superstructure among the helicoidal (molecules orthogonal to helical axis), heliconical (molecules oblique to the helical axis, i.e., oblique helicoidal), and their inverse helices, together with a tunability on the helical pitch, by combining electrical and optical manipulations. This multistate transformation depends on a matching of the temperature, the strength of external stimuli, and the bend and twist elastic effects of the system. A laser emission with tunable wavelength and polarization, and prescribed micropatterns formed by any aforementioned architectures were achieved.