Sidewall control of static azimuthal bistable nematic alignment states

Ladak, Sam ORCID: https://orcid.org/0000-0002-0275-0927, 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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Abstract

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:	21 Oct 2022 09:03
URI:	https://orca.cardiff.ac.uk/id/eprint/35183

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