Mean Field Theory of Ferroelectricity in Liquid Crystals
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Date
2000-06
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Addis Ababa Universty
Abstract
Using mean field potential containing the lowest symmetry allowed first rank,
second rank and coupling of the two terms, we have studied the ferroelectricity in
nematic liquid crystals. By taking various combinations of the terms, we have
designed a number of potential models and performed mean field calculations for
each potential. The significance of a pure dipolar and coupling interaction terms are
investigated . The pure dipolar interaction term has been found to show more
influence than the coupling terms for the formation of ferroelectricity in nematic
liquid crystal. Phase diagrams that show ferroelectric-nematic (FN ), nematic (N) and
isotropic phases are produced for the various potential models
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Keywords
Liquid Crystals