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Stimulated transformation of soft helix among helicoidal, heliconical, and their inverse helices.


ABSTRACT: 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.

SUBMITTER: Yuan CL 

PROVIDER: S-EPMC6777971 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Stimulated transformation of soft helix among helicoidal, heliconical, and their inverse helices.

Yuan Cong-Long CL   Huang Wenbin W   Zheng Zhi-Gang ZG   Liu Binghui B   Bisoyi Hari Krishna HK   Li Yannian Y   Shen Dong D   Lu Yanqing Y   Li Quan Q  

Science advances 20191004 10


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 inve  ...[more]

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