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Toroidal Configuration of a Cholesteric Liquid Crystal in Droplets with Homeotropic Anchoring

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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.

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Authors and Affiliations

  1. Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia

    M. N. Krakhalev & V. Ya. Zyryanov

  2. Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russia

    M. N. Krakhalev & A. P. Gardymova

  3. Faculty of Physics, Moscow State University, Moscow, 119991, Russia

    V. Yu. Rudyak

Authors
  1. M. N. Krakhalev
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  2. V. Yu. Rudyak
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  3. A. P. Gardymova
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  4. V. Ya. Zyryanov
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Correspondence to M. N. Krakhalev.

Additional information

Russian Text © The Author(s), 2019, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2019, Vol. 109, No. 7, pp. 487–491.

This work was supported by the Russian Science Foundation (project no. 18-72-10036). The work was performed using the equipment of the Shared Usage Center of High-Capacity Computational Resources, Moscow State University, supported by the Ministry of Education and Science of the Russian Federation (project no. RFMEFI62117X0011).

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Krakhalev, M.N., Rudyak, V.Y., Gardymova, A.P. et al. Toroidal Configuration of a Cholesteric Liquid Crystal in Droplets with Homeotropic Anchoring. Jetp Lett. 109, 478–481 (2019). https://doi.org/10.1134/S0021364019070075

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  • DOI: https://doi.org/10.1134/S0021364019070075

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