Sidewall control of static azimuthal bistable nematic alignment states

S. Ladak, A.J. Davidson, C.V. Brown, N.J. Mottram

Research output: Contribution to journalArticle

16 Citations (Scopus)

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 anti-phase, 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.
LanguageEnglish
Article number085114
Number of pages8
JournalJournal of Physics D: Applied Physics
Volume42
Issue number8
DOIs
Publication statusPublished - Apr 2009

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Tensors
alignment
tensors
Nematic liquid crystals
predictions
textures
Textures
liquid crystals
occurrences
energy

Keywords

  • nematic liquid crystal
  • surface effects
  • bistable states

Cite this

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Sidewall control of static azimuthal bistable nematic alignment states. / Ladak, S.; Davidson, A.J.; Brown, C.V.; Mottram, N.J.

In: Journal of Physics D: Applied Physics, Vol. 42, No. 8, 085114, 04.2009.

Research output: Contribution to journalArticle

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AU - Brown, C.V.

AU - Mottram, N.J.

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KW - nematic liquid crystal

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