M. N. Krakhalev, V. Yu. Rudyak, A. P. Gardymova, V. Ya. Zyryanov, “Toroidal configuration of a cholesteric liquid crystal in droplets with homeotropic anchoring”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2019, Volume 109, Issue 7,Pages <nobr>487

This article is cited in 5 papers

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Toroidal configuration of a cholesteric liquid crystal in droplets with homeotropic anchoring

M. N. Krakhalev^ab, V. Yu. Rudyak^c, A. P. Gardymova^b, V. Ya. Zyryanov^a

^a Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
^b Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russia
^c Faculty of Physics, Moscow State University, Moscow, Russia

Abstract: Orientational structures formed in cholesteric droplets with homeotropic surface anchoring have been studied by means of polarization optical microscopy and computer simulations. It has been found that, when the ratio of the size of droplets to the pitch of a cholesteric helix ranges from 1.4 to 2.9, an axisymmetric toroidal cholesteric structure is formed with a topological linear defect in the form of an equatorially located surface ring. The features of the toroidal structure in cholesteric droplets and their optical textures for various observation schemes are examined in detail.

Received: 07.02.2019
Revised: 07.02.2019
Accepted: 07.02.2019

DOI: 10.1134/S0370274X19070105