Coexisting Nematic and Smectic- A Phases in a Twisted Liquid-Crystal Cell

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Coexisting Nematic and Smectic- A Phases in a Twisted Liquid-Crystal Cell

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dc.contributor.author Ruan, Lizhen en_GB
dc.contributor.author Osipov, M. A. en_GB
dc.contributor.author Sambles, J. Roy en_GB
dc.contributor.department University of Exeter; University of Strathclyde en_GB
dc.date.accessioned 2008-06-05T11:08:44Z en_GB
dc.date.accessioned 2011-01-25T11:54:39Z en_US
dc.date.accessioned 2013-03-20T13:23:16Z
dc.date.issued 2001 en_GB
dc.description.abstract Twisted homogeneously planar-aligned nematic liquid-crystal cells are cooled into the smectic- A phase. The expected defective structure does not form. Instead the cells still show good optical-guiding characteristics. Exploration of the cells using a half-leaky guided-mode arrangement reveals that the liquid-crystal phase separates into three or more regions. Adjacent to both the upper and lower boundaries is a region of highly twisted nematic liquid crystal. In the center of the cell is one or more homogeneous smectic- A regions with smectic layers normal to the cell surfaces, separated by twisted nematic. As the cell is cooled so the smectic- A regions grow in thickness with the nematic regions progressively thinning but with increased twist gradient. A theoretical model of these novel results is presented. en_GB
dc.identifier.citation 86 (20), pp. 4548-4551 en_GB
dc.identifier.doi 10.1103/PhysRevLett.86.4548 en_GB
dc.identifier.uri http://hdl.handle.net/10036/29577 en_GB
dc.language.iso en en_GB
dc.publisher American Physical Society en_GB
dc.relation.url http://dx.doi.org/10.1103/PhysRevLett.86.4548 en_GB
dc.relation.url http://link.aps.org/abstract/PRL/v86/p4548 en_GB
dc.title Coexisting Nematic and Smectic- A Phases in a Twisted Liquid-Crystal Cell en_GB
dc.type Article en_GB
dc.date.available 2008-06-05T11:08:44Z en_GB
dc.date.available 2011-01-25T11:54:39Z en_US
dc.date.available 2013-03-20T13:23:16Z
dc.identifier.issn 0031-9007 en_GB
dc.identifier.issn 1079-7114 en_GB
dc.description Lizhen Ruan, M. A. Osipov, and J. Roy Sambles, Physical Review Letters, Vol. 86, pp. 4548 - 4551 (2001). "Copyright © 2001 by the American Physical Society." en_GB
dc.identifier.journal Physical Review Letters en_GB


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