| Summary: | 碩士 === 元智工學院 === 化學工程學系 === 84 === Low-molecular-weight liquid crystals which exhibit chiral
smectic C phase have been widely because of their ferroelectric
properties and the electroopticeffects of fast switching speed.
These novel characterics make ferroelectric liquid crystals(
FLCs) particularly suitable for electrooptic applications,suchas
to display and light vavle devices. Recently, side-chain liquid
crystalline polymers have attracted considerableinterest owing
to combine the electrooptic properties of liquid crystals
withthe excellect mechanical characterics and processability of
polymeric materials.This bifunctional property can be applied
for displays and information storage. In this paper, we report
the characterics of SSFLC in a ferroelectric liquid crystalline
polymer(FLCP). A new bistable electrooptic effect based on light
scattering of FLCP is reported. At low temperature in the SmC*
phase, it was demonstrated for the first timethat both the
transparent and opaque states could be maintained after removing
the applied voltage. This is a new bistable electrooptic effect
in FLCP. It wasconfirmed from polarized microscopic observation
that the opaque state of thiselectrooptic effect during and
after the reported polarity reversal was causedby the induced
helicoidal structure.
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