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Sidewall control of static azimuthal bistable nematic alignment states

Ladak, Sam, Davidson, A., Brown, C. V. and Mottram, N. J. 2009. Sidewall control of static azimuthal bistable nematic alignment states. Journal of Physics D: Applied Physics 42 (8) , 085114. 10.1088/0022-3727/42/8/085114

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Stable azimuthal alignment states have been created in the plane of a homogeneous layer of nematic liquid crystal by the action of one or more sawtooth sidewalls. The alignment states in devices with two sawtooth sidewall structures, either in-phase or in antiphase, and with one sawtooth wall opposite a flat wall have been investigated as a function of the sawtooth pitch. The optical textures of the observed states are in excellent agreement with the predictions of nematic Q-tensor theory. The frequencies of occurrence of the different states are broadly consistent with the expected inverse correlation with the Q-tensor predictions for their energy.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Institute of Physics
ISSN: 0022-3727
Last Modified: 04 Jun 2017 04:14

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