Dynamic Properties of Polymer Stabilised Pi-Cells

The influence of the polymer network on the dynamic switching behaviour of polymer-stabilised pi-cell devices is investigated in detail. The stabilisation technique is shown experimentally to increase the relaxation and switch-on times of the device when small concentrations of polymer are used. Mod...

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Bibliographic Details
Published inMolecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Vol. 476; no. 1; pp. 165/[411] - 179/[425]
Main Authors Brimicombe, P. D., Elston, S. J., Raynes, E. P.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 11.12.2007
Subjects
fast-switching liquid crystal devices
pi-cell
polymer-stabilised liquid crystal device
reactive mesogen
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Summary:The influence of the polymer network on the dynamic switching behaviour of polymer-stabilised pi-cell devices is investigated in detail. The stabilisation technique is shown experimentally to increase the relaxation and switch-on times of the device when small concentrations of polymer are used. Modelling of the device indicates that this is due to the polymer network suppressing the fluid flow during switching. A comparison between a conventional pi-cell and a polymer-stabilised device with the same switchable range of transmission indicates that addition of the polymer network increases the relaxation time by 1.7 times.
ISSN:1542-1406
1563-5287
DOI:10.1080/15421400701739089