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Untwisting of the helical structure of cholesteric droplets with homeotropic surface anchoring

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Abstract

Cholesteric droplets dispersed in a polymer with homeotropic surface anchoring are studied. A director configuration with the bipolar distribution of the axis of the helix is formed in droplets. The untwisting of the helical structure (i.e., an increase in the pitch of the helix) is experimentally observed at a decrease in the size of droplets. This dependence is analyzed for liquid crystal droplets with various concentrations of the chiral addition. A proposed empirical relation describes well the correlation of the helix pitch and the size of droplets in the studied samples.

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Authors and Affiliations

  1. Kirensky Institute of Physics, 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

    A. V. Emel’yanenko

  4. Department of Chemical Engineering, National Cheng Kung University, 70101, Tainan, Taiwan

    Jui-Hsiang Liu

Authors
  1. M. N. Krakhalev
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  2. A. P. Gardymova
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  3. A. V. Emel’yanenko
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  4. Jui-Hsiang Liu
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  5. V. Ya. Zyryanov
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Correspondence to M. N. Krakhalev.

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Original Russian Text © M.N. Krakhalev, A.P. Gardymova, A.V. Emel’yanenko, Jui-Hsiang Liu, V.Ya. Zyryanov, 2017, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 105, No. 1, pp. 43–46.

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Krakhalev, M.N., Gardymova, A.P., Emel’yanenko, A.V. et al. Untwisting of the helical structure of cholesteric droplets with homeotropic surface anchoring. Jetp Lett. 105, 51–54 (2017). https://doi.org/10.1134/S002136401701012X

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  • DOI: https://doi.org/10.1134/S002136401701012X

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