Periodic Anchoring Condition for Alignment of a Short Pitch Cholesteric Liquid Crystal in Uniform Lying Helix Texture
Due to flexoelectricity, a cholesteric liquid crystal unidirectionally aligned in a sandwich cell, with its helix lying parallel to the confining cell substrates, exhibit a flexoelectro-optic response when subjected to an electric field applied perpendicular to the helix axis. The clarity of the...
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| Main Authors: | , |
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| Format: | Article |
| Published: |
AIP Publishing LLC.
2010
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1063/1.3357420 http://dx.doi.org/10.1063/1.3357420 http://umpir.ump.edu.my/5458/1/APL-guru.pdf |
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| Summary: | Due to flexoelectricity, a cholesteric liquid crystal unidirectionally aligned in a sandwich cell, with
its helix lying parallel to the confining cell substrates, exhibit a flexoelectro-optic response when
subjected to an electric field applied perpendicular to the helix axis. The clarity of the
flexoelectro-optic response is dependent on the quality of the uniformly lying helix texture of the
cholesteric which often is difficult to achieve. Herein, a method for alignment of a short pitch
cholesteric in such a texture by means of a periodic surface anchoring condition with periodicity
matching that of the cholesteric liquid crystal is described. |
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