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Open AccessArticle

Optical Textures and Orientational Structures in Cholesteric Droplets with Conical Boundary Conditions

1
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041 Krasnoyarsk, Russia
2
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Pradip K. Bhowmik
Molecules 2020, 25(7), 1740; https://doi.org/10.3390/molecules25071740
Received: 19 March 2020 / Revised: 3 April 2020 / Accepted: 3 April 2020 / Published: 10 April 2020
(This article belongs to the Special Issue Current Advances in Liquid Crystals)
Cholesteric droplets dispersed in polymer with conical boundary conditions have been studied. The director configurations are identified by the polarising microscopy technique. The axisymmetric twisted axial-bipolar configuration with the surface circular defect at the droplet’s equator is formed at the relative chirality parameter N 0 2.9 . The intermediate director configuration with the deformed circular defect is realised at 2.9 < N 0 < 3.95 , and the layer-like structure with the twisted surface defect loop is observed at N 0 3.95 . The cholesteric layers in the layer-like structure are slightly distorted although the cholesteric helix is untwisted. View Full-Text
Keywords: cholesteric liquid crystal; droplet; optical texture; orientational structure; conical surface anchoring; topological defect cholesteric liquid crystal; droplet; optical texture; orientational structure; conical surface anchoring; topological defect
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MDPI and ACS Style

Gardymova, A.P.; Krakhalev, M.N.; Zyryanov, V.Y. Optical Textures and Orientational Structures in Cholesteric Droplets with Conical Boundary Conditions. Molecules 2020, 25, 1740.

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