Abstract
The operation of a post-aligned bistable nematic (PABN) liquid crystal
device is simulated using a dynamic finite-element implementation of the Landau–de
Gennes theory in 3D. Two topologically distinct stable director profiles of
higher and lower tilt angles are identified. The switching process between
these two states is simulated while monitoring the variation in total free
energy of the liquid crystal material. Maxima in the free energy, acting as
energy barriers separating the two stable states, are shown to coincide with
the formation of $-1/ 2$ defect
lines in the director field.
© 2008 IEEE
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