In this thesis, the reflective characteristics of the cholesteric liquid crystals as a function of polymer network concentration and temperature were studied.
As the polymer concentration is increased the viewing angle of cholesteric liquid crystals and the half-width of the reflected beam becomes wider. And the contrast between reflective mode and scattering mode was observed to be reduced.
It was also noted that the peak width of the reflected light decreases as the temperature approaches the phase transition temperature$(T_c)$. And also the operation voltage of the cell slowly decreases as the temperature becomes increased under $T_c$.
