We observed planar alignment of nematic liquid crystal (LC) 5CB on a fused quartz surface upon illumination with polarized UV light. The axis of easy orientation is perpendicular to the polarization of the incident light. The value of the anchoring energy increases with increase of the illumination dozes up to 10−4 erg/cm2. We propose that the phenomena observed results from light-induced rearrangement of the LC layer adsorbed on the quartz surface.
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Magyar et al. (1999) studied this question.
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