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Effect of Biaxiality on Chirality in Chiral Nematic Liquid Crystals

Abstract

Biaxiality and chirality are two of the most interesting topics in material and biological science, particularly in liquid crystals. What is even more interesting is that these two properties are related. It was theoretically predicted that morphological chirality is impossible without morphological biaixility in chiral nematic liquid crystals.1 We experimentally study the effect of biaxiality on chirality. We show that when achiral liquid crystal dimers with large molecular biaixiality are doped into chiral liquid crystals, their helical pitch is significantly decreased. We have also observed an abnormal fingerprint texture of the chiral nematic liquid crystals doped the dimers, which suggests morphological biaxiality. Our experimental results support the biaxial theory of chiral nematic liquid crystal.

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Publication details

The article was received on 02 May 2018, accepted on 10 Jul 2018 and first published on 11 Jul 2018


Article type: Paper
DOI: 10.1039/C8SM00898A
Citation: Soft Matter, 2018, Accepted Manuscript
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    Effect of Biaxiality on Chirality in Chiral Nematic Liquid Crystals

    D. Yang, M. Yu, Y. Jiang, Y. Shin, J. Jiang, H. Yang, H. Zhang, J. Xue and Q. Li, Soft Matter, 2018, Accepted Manuscript , DOI: 10.1039/C8SM00898A

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