Abstract
Holographic polymer dispersed liquid crystals (H-PDLCs), which is one
of promising material for LC display, when doped with nanoscale silver (nano
Ag) exhibit a unique electro-optical response to frequency modulation. We
established an equivalent circuit model for H-PDLC doped nano Ag gratings
according to Maxwell–Wagner effect and calculated relaxation frequency
for three concentrations of nano Ag. We found that the frequency modulation
and doping concentration have a close effect on threshold driving voltage
of H-PDLC gratings. It is experimentally shown that the lowest threshold driving
voltage can be obtained when the driving frequency is located just around
the recipe's dielectric relaxation frequency. It is possible to decrease the
driving voltage of H-PDLC through selection of suitable driving frequency
as well as via doping with appropriate concentration of nano Ag.
© 2013 IEEE
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