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Observation of Electroconvection in Nematic Liquid Crystals by X-Ray Interferometric Method

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

Abstract

The electroconvection (EC) phenomenon arising in nematic liquid crystals (NLC) of type E7 under the influence of an external electric field was recorded by the method of X-ray interferometry. The character of the refractive indices of the ordinary (no) and extraordinary (ne) waves is studied, and the moment of the appearance of EC in the NLC is determined. It is shown that the phenomenon of electroconvection occurs when no and ne coincide. It is also shown that in the E7 type NLC, where there are no free charge carriers, under the influence of an external electromagnetic field an EC phenomenon can occur as a consequence of the formation of bound charges.

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Authors and Affiliations

  1. Yerevan State University, Yerevan, Armenia

    L. G. Gasparyan, V. P. Mkrtchyan, R. A. Alaverdyan & T. M. Sarukhanyan

Authors
  1. L. G. Gasparyan
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  2. V. P. Mkrtchyan
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  3. R. A. Alaverdyan
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  4. T. M. Sarukhanyan
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Corresponding author

Correspondence to V. P. Mkrtchyan.

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The authors declare no conflict of interest.

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Translated by V. Musakhanyan

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Gasparyan, L.G., Mkrtchyan, V.P., Alaverdyan, R.A. et al. Observation of Electroconvection in Nematic Liquid Crystals by X-Ray Interferometric Method. J. Contemp. Phys. 56, 379–383 (2021). https://doi.org/10.3103/S1068337221040083

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  • DOI: https://doi.org/10.3103/S1068337221040083

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