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Abstract
The optical techniques, the Brewster angle reflection method, the dye doped reflection ellipsometry and the total reflection ellipsometry, are proposed to investigate the interfacial Liquid Crystal (LC) director orientation. These methods are based on the analysis of the optical polarization of the reflected light from LC cells.
From the experimental and theoretical results, it was found that these methods are useful to study the interfacial LC director orientation. Comparison of these methods with one another clarifies the features and the advantages of each one.