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Effect of an electric field on the orientation of a liquid crystal in a cell with a nonuniform director distribution

  • Statistical, Nonlinear, and Soft Matter Physics
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Abstract

The electric field-induced reorientation of a nematic liquid crystal in cells with a planar helicoidal or a homeoplanar structure of a director field is studied theoretically and experimentally. The dependences of the capacitances of these systems on the voltage in an applied electric field below and above the Fréedericksz threshold are experimentally obtained and numerically calculated. The calculations use the director distribution in volume that is obtained by direct minimization of free energy at various voltages. The inhomogeneity of the electric field inside a cell is taken into account. The calculation results are shown to agree with the experimental data.

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Authors and Affiliations

  1. St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199034, Russia

    E. V. Aksenova, A. A. Karetnikov, N. A. Karetnikov, A. P. Kovshik, E. I. Ryumtsev, A. S. Sakhatskii & A. V. Svanidze

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  1. E. V. Aksenova
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  2. A. A. Karetnikov
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  3. N. A. Karetnikov
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  4. A. P. Kovshik
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  5. E. I. Ryumtsev
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  6. A. S. Sakhatskii
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  7. A. V. Svanidze
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Correspondence to E. V. Aksenova.

Additional information

Original Russian Text © E.V. Aksenova, A.A. Karetnikov, N.A. Karetnikov, A.P. Kovshik, E.I. Ryumtsev, A.S. Sakhatskii, A.V. Svanidze, 2016, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 149, No. 5, pp. 1087–1095.

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Aksenova, E.V., Karetnikov, A.A., Karetnikov, N.A. et al. Effect of an electric field on the orientation of a liquid crystal in a cell with a nonuniform director distribution. J. Exp. Theor. Phys. 122, 942–949 (2016). https://doi.org/10.1134/S1063776116050010

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  • DOI: https://doi.org/10.1134/S1063776116050010

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