Alignment of liquid crystals by polymers with residual amounts of solvents

Abstract The homogeneous nematic layers in liquid crystal cells with treated surfaces are affected by orientational transitions in the electric, magnetic, or temperature fields. The liquid crystal structures formed on solid or liquid surfaces find limited application in identifying the liquid-crysta...

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Autores principales:	Alexander M. Parshin, Victor Y. Zyryanov, Vasily F. Shabanov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c317c5d8d5ef47f69cb6ec2bb69c50d1
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spelling	oai:doaj.org-article:c317c5d8d5ef47f69cb6ec2bb69c50d12021-12-02T15:05:01ZAlignment of liquid crystals by polymers with residual amounts of solvents10.1038/s41598-017-03243-52045-2322https://doaj.org/article/c317c5d8d5ef47f69cb6ec2bb69c50d12017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03243-5https://doaj.org/toc/2045-2322Abstract The homogeneous nematic layers in liquid crystal cells with treated surfaces are affected by orientational transitions in the electric, magnetic, or temperature fields. The liquid crystal structures formed on solid or liquid surfaces find limited application in identifying the liquid-crystal states by the textures observed in polarized light. The use of surfaces prepared from polymer solutions makes it possible to significantly broaden the range of application of the liquid crystal structures. We investigate the structures with the continuous transformation of the nematic director orientation from radial to planar, which were formed by the polycarbonate surface in the presence of different residual solvents. The structures contained the disclination lines that aligned either by a plate rubbed to provide the homogeneous planar orientation in the LC layer or by a magnetic field applied along the polycarbonate film during the structure formation. The orientational transitions caused by surface treatment, temperature, and electric or magnetic fields in these structures are observed. The comparison of temperature critical distance as well as electric and magnetic coherence lengths with equilibrium length calculated from the expression for the free energy of the nematic is performed. The electro-optical characteristics of the nematic structures are obtained.Alexander M. ParshinVictor Y. ZyryanovVasily F. ShabanovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexander M. Parshin Victor Y. Zyryanov Vasily F. Shabanov Alignment of liquid crystals by polymers with residual amounts of solvents
description	Abstract The homogeneous nematic layers in liquid crystal cells with treated surfaces are affected by orientational transitions in the electric, magnetic, or temperature fields. The liquid crystal structures formed on solid or liquid surfaces find limited application in identifying the liquid-crystal states by the textures observed in polarized light. The use of surfaces prepared from polymer solutions makes it possible to significantly broaden the range of application of the liquid crystal structures. We investigate the structures with the continuous transformation of the nematic director orientation from radial to planar, which were formed by the polycarbonate surface in the presence of different residual solvents. The structures contained the disclination lines that aligned either by a plate rubbed to provide the homogeneous planar orientation in the LC layer or by a magnetic field applied along the polycarbonate film during the structure formation. The orientational transitions caused by surface treatment, temperature, and electric or magnetic fields in these structures are observed. The comparison of temperature critical distance as well as electric and magnetic coherence lengths with equilibrium length calculated from the expression for the free energy of the nematic is performed. The electro-optical characteristics of the nematic structures are obtained.
format	article
author	Alexander M. Parshin Victor Y. Zyryanov Vasily F. Shabanov
author_facet	Alexander M. Parshin Victor Y. Zyryanov Vasily F. Shabanov
author_sort	Alexander M. Parshin
title	Alignment of liquid crystals by polymers with residual amounts of solvents
title_short	Alignment of liquid crystals by polymers with residual amounts of solvents
title_full	Alignment of liquid crystals by polymers with residual amounts of solvents
title_fullStr	Alignment of liquid crystals by polymers with residual amounts of solvents
title_full_unstemmed	Alignment of liquid crystals by polymers with residual amounts of solvents
title_sort	alignment of liquid crystals by polymers with residual amounts of solvents
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c317c5d8d5ef47f69cb6ec2bb69c50d1
work_keys_str_mv	AT alexandermparshin alignmentofliquidcrystalsbypolymerswithresidualamountsofsolvents AT victoryzyryanov alignmentofliquidcrystalsbypolymerswithresidualamountsofsolvents AT vasilyfshabanov alignmentofliquidcrystalsbypolymerswithresidualamountsofsolvents
_version_	1718388980452425728

Alignment of liquid crystals by polymers with residual amounts of solvents

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