Analysis of the sign-dependent switching observed in a hybrid aligned nematic cell

DSpace/Manakin Repository

Open Research Exeter (ORE)

Analysis of the sign-dependent switching observed in a hybrid aligned nematic cell

Show simple item record

dc.contributor.author Cornford, Stephen Leslie en_GB
dc.contributor.author Taphouse, T. S. en_GB
dc.contributor.author Sambles, J. Roy en_GB
dc.contributor.department University of Exeter; HP Labs, Bristol en_GB
dc.date.accessioned 2009-03-06T16:03:03Z en_GB
dc.date.accessioned 2011-01-25T11:54:19Z en_US
dc.date.accessioned 2013-03-20T13:00:55Z
dc.date.issued 2009 en_GB
dc.description.abstract An optical waveguide experiment was used to study the influence of dc electric fields on a hybrid aligned nematic liquid crystal cell. This dc switching differed from ac switching in two ways: first, the equilibrium states depended on the sign of the applied voltage, and second, there was transient activity over long (~100 ms) timescales. To understand both of these, a numerical model of the cell's dynamics, which included both the Ericksen–Leslie theory and a drift-diffusion model of mobile ions, has been developed. Comparing modelling with observations, we find that the transients are caused by the motion of tiny concentrations of ionic impurities, and that the sign dependence is caused by an asymmetric distribution of surface charge, rather than the flexoelectric effect. en_GB
dc.identifier.citation 11, article 013045 en_GB
dc.identifier.doi 10.1088/1367-2630/11/1/013045 en_GB
dc.identifier.uri http://hdl.handle.net/10036/52715 en_GB
dc.language.iso en en_GB
dc.publisher Institute of Physics and Deutsche Physikalische Gesellschaft en_GB
dc.relation.url http://dx.doi.org/10.1088/1367-2630/11/1/013045 en_GB
dc.relation.url http://www.iop.org/EJ/abstract/1367-2630/11/1/013045 en_GB
dc.title Analysis of the sign-dependent switching observed in a hybrid aligned nematic cell en_GB
dc.type Article en_GB
dc.date.available 2009-03-06T16:03:03Z en_GB
dc.date.available 2011-01-25T11:54:19Z en_US
dc.date.available 2013-03-20T13:00:55Z
dc.identifier.issn 1367-2630 en_GB
dc.description Copyright © 2009 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is the published version of an article published in New Journal of Physics Vol. 11, article 013045. DOI: 10.1088/1367-2630/11/1/013045 en_GB
dc.identifier.journal New Journal of Physics en_GB


Files in this item

Files Size Format View
Analysis of the sign-dependent.pdf 757.2Kb PDF Thumbnail

This item appears in the following Collection(s)

Show simple item record

Browse

My Account

Local Links