Ferroelectric liquid crystal (FLC) with acrylate was prepared to investigate surface phenomena due to motions by spontaneous polarization of FLCs which is reacted with polymer matrix with polymer ball morphology at interface. it will result in lowering hysteresis and driving voltage phenomenologically.
FLC has biphenyl unit which will give rise to interact with nematic LC strongly. so monomer reacted with polymer matrix will exist at polymer interface.
we could conform that FLCs synthesized shows ferroelectric property by dielectric measurement and D-E hysteresis.
Driving voltage increased as FLC concentration increased. that is why unreacted monomer interact with nematic LC and form cholesteric LCs. This cholesteric LCs forms helical structure having light scattering at low voltage, so increase driving voltage. we couldnot observed motions of FLCs because effects of cholesteric LCs were larger than motions of FLCs at polymer interface.
we observed the turn-off time rapidly decreased as FLC concentration increased. it was due to helical structure formation process in cholesteric phase on voltage-off condition.
Hysteresis also increase as FLC concentration increased. it was difference between the voltage occuring phase chang from cholesteric phase to nematic phase when voltage increase and the voltage occuring phase change from nematic phase to cholesteric phase when voltage decrease. so motions of FLC mesogen at polymer interface couldnot effect hysteresis.