L. G. Gasparyan, V. P. Mkrtchyan, R. A. Alaverdyan, T. M. Sarukhanyan
{"title":"x射线干涉法观察向列液晶中的电对流","authors":"L. G. Gasparyan, V. P. Mkrtchyan, R. A. Alaverdyan, T. M. Sarukhanyan","doi":"10.3103/S1068337221040083","DOIUrl":null,"url":null,"abstract":"<p>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 (<i>n</i><sub>o</sub>) and extraordinary (<i>n</i><sub>e</sub>) 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 <i>n</i><sub>o</sub> and <i>n</i><sub>e</sub> 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.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"56 4","pages":"379 - 383"},"PeriodicalIF":0.5000,"publicationDate":"2021-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Observation of Electroconvection in Nematic Liquid Crystals by X-Ray Interferometric Method\",\"authors\":\"L. G. Gasparyan, V. P. Mkrtchyan, R. A. Alaverdyan, T. M. Sarukhanyan\",\"doi\":\"10.3103/S1068337221040083\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>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 (<i>n</i><sub>o</sub>) and extraordinary (<i>n</i><sub>e</sub>) 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 <i>n</i><sub>o</sub> and <i>n</i><sub>e</sub> 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.</p>\",\"PeriodicalId\":623,\"journal\":{\"name\":\"Journal of Contemporary Physics (Armenian Academy of Sciences)\",\"volume\":\"56 4\",\"pages\":\"379 - 383\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2021-12-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Contemporary Physics (Armenian Academy of Sciences)\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068337221040083\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Contemporary Physics (Armenian Academy of Sciences)","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1068337221040083","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Observation of Electroconvection in Nematic Liquid Crystals by X-Ray Interferometric Method
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.
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.
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