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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Multistable alignment states in nematic liquid crystal filled wells

Tsakonas, C. and Davidson, A.J. and Brown, C.V. and Mottram, N.J. (2007) Multistable alignment states in nematic liquid crystal filled wells. Applied Physics Letters, 90. p. 111913. ISSN 0003-6951

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Abstract

Two distinct, stable alignment states have been observed for a nematic liquid crystal confined in a layer with thickness of 12 µm and in square wells with sides of length between 20 and 80 µm. The director lies in the plane of the layer and line defects occur in two corners of the squares. The positions of the defects determine whether the director orientation is across the diagonal or is parallel to two opposite edges of the square. The device is multistable because both the diagonal and parallel states are stable when rotated by multiples of 90° in plane.