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

IF 0.5 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2021-12-19 DOI:10.3103/S1068337221040083

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

引用次数: 0

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 (n_o) and extraordinary (n_e) 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 n_o and n_e 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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x射线干涉法观察向列液晶中的电对流

用x射线干涉测量法记录了E7型向列液晶在外加电场作用下产生的电对流现象。研究了普通波(no)和非寻常波(ne)的折射率特性，确定了电导率在NLC中出现的时刻。结果表明，当no和ne重合时，会发生电对流现象。研究还表明，在没有自由载流子的E7型NLC中，在外加电磁场的作用下，由于束缚电荷的形成，可以发生EC现象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Contemporary Physics (Armenian Academy of Sciences) PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

66.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Contemporary Physics (Armenian Academy of Sciences) is a journal that covers all fields of modern physics. It publishes significant contributions in such areas of theoretical and applied science as interaction of elementary particles at superhigh energies, elementary particle physics, charged particle interactions with matter, physics of semiconductors and semiconductor devices, physics of condensed matter, radiophysics and radioelectronics, optics and quantum electronics, quantum size effects, nanophysics, sensorics, and superconductivity.