Zenithal bistability in a nematic liquid-crystal device with a monostable surface condition

Parry-Jones, L. A.; Edwards, E. G.; Elston, S. J.; Brown, C. V.
March 2003
Applied Physics Letters;3/3/2003, Vol. 82 Issue 9, p1476
Academic Journal
The ground-state director configurations in a grating-aligned, zenithally bistable nematic device are calculated in two dimensions using a Q tensor approach. The director profiles generated are well described by a one-dimensional variation of the director across the width of the device, with the distorted region near the grating replaced by an effective surface anchoring energy. This work shows that device bistability can in fact be achieved by using a monostable surface term in the one-dimensional model. This implies that is should be possible to construct a device showing zenithal bistability without the need for a micropatterned surface.


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