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dc.contributor.authorYang, Fuzien_GB
dc.contributor.authorDong, Youmeien_GB
dc.contributor.authorRuan, Lizhenen_GB
dc.contributor.authorSambles, J. Royen_GB
dc.contributor.departmentUniversity of Exeter; Tsinghua University, Beijingen_GB
dc.date.accessioned2008-06-06T11:04:06Zen_GB
dc.date.accessioned2011-01-25T11:54:38Zen_GB
dc.date.accessioned2013-03-20T13:23:24Z
dc.date.issued2004en_GB
dc.description.abstractThe switch-off dynamics of a 180° supertwisted nematic (STN) are explored in detail by using a convergent beam system and the fully leaky guided-mode technique. From the dynamical guided-mode data and using the Ericksen–Leslie theory, the director structure in the cell at different times during switch-off is obtained. We have studied the dynamic switch-off from different applied voltages and have found that the relaxation time is independent of the voltage. From fitting the optical data, the effective viscosities are obtained. It appears that two viscosity coefficients, γ and η1, largely control the dynamics of switch-off. From the analysis of the director tilt profile in the cell, it is found that there is no backflow-induced increased tilt at the cell center in the STN cell during the switch-off. From liquid crystal hydrodynamics, this no-backflow dynamic process in the STN cell is well explained.en_GB
dc.identifier.citation96 (1), pp. 310-315en_GB
dc.identifier.doi10.1063/1.1757031en_GB
dc.identifier.urihttp://hdl.handle.net/10036/29614en_GB
dc.language.isoenen_GB
dc.publisherAmerican Institute of Physicsen_GB
dc.relation.urlhttp://dx.doi.org/10.1063/1.1757031en_GB
dc.relation.urlhttp://link.aip.org/link/?JAPIAU/96/310/1en_GB
dc.subjectnematic liquid crystalsen_GB
dc.subjectliquid crystal displaysen_GB
dc.subjectswitchingen_GB
dc.subjectviscosityen_GB
dc.subjectnumerical analysisen_GB
dc.titleDynamical process of switch-off in a supertwisted nematic cellen_GB
dc.typeArticleen_GB
dc.date.available2008-06-06T11:04:06Zen_GB
dc.date.available2011-01-25T11:54:38Zen_GB
dc.date.available2013-03-20T13:23:24Z
dc.identifier.issn0021-8979en_GB
dc.descriptionCopyright © 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics 96 (2004) and may be found at http://link.aip.org/link/?JAPIAU/96/310/1en_GB
dc.identifier.journalJournal of Applied Physicsen_GB


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