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Optical Studies of Dye Doped Cholesteric Liquid Crystals

Porov P, Chandel VS, Manohar R

The present paper reports the effect of anthraquinone and rhodamine B dye on optical parameters of two cholesteric liquid crystals namely cholestryl pelargonate (CP) and cholestryl butyrate (CB). The refractive indices, order parameter and birefringence of dyes doped cholesteric liquid crystals have been measured and behavior of these parameters with variation in temperature have been discussed only in the cholesteric phase. The refractive indices, order parameter and birefringence show significant variation with the addition of anthraquinone and rhodamine B dye in pure cholesteric liquid crystals.