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Influence of the molecular structure of components on the induction of mesophases in nematic liquid crystal systems

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Journal of Contemporary Physics (Armenian Academy of Sciences) Aims and scope

Abstract

The dielectric properties of nematic liquid crystals (NLC) are studied in the temperature range of mesophase existence with taking into account the peculiarities of the molecular structure of components. The dependence of the ordering parameter and activation energy on the temperature and composition of an LC system are obtained and investigated by analysis of EPR spectra based on the spin relaxation theory. The values of the local viscosity of the systems are estimated within the framework of the hydrodynamic model. The appearance of induced and reentrant mesophases is established. It is shown that in NLC systems with non-center-symmetric molecules the correlation between the activation energy and thermostability should be inverse to that in the Maier-Saupe model.

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Authors and Affiliations

  1. Institute of Applied Problems of Physics, NAS of Armenia, Yerevan, Russia

    L. S. Bezhanova, Z. V. Baghdasaryan & M. L. Baburyan

Authors
  1. L. S. Bezhanova
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  2. Z. V. Baghdasaryan
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  3. M. L. Baburyan
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Additional information

Original Russian Text © L.S. Bezhanova, Z.V. Baghdasaryan, M.L. Baburyan, 2007, published in Izvestiya NAN Armenii, Fizika, 2007, Vol. 42, No. 1, pp. 43–50.

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Bezhanova, L.S., Baghdasaryan, Z.V. & Baburyan, M.L. Influence of the molecular structure of components on the induction of mesophases in nematic liquid crystal systems. J. Contemp. Phys. 42, 29–33 (2007). https://doi.org/10.3103/S1068337207010069

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  • DOI: https://doi.org/10.3103/S1068337207010069

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