Temperature Dependence of Flow Alignment in Nematic Liquid Crystals

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Abstract
The temperature dependence of the flow alignment angle has been measured in two nematic liquid crystals, p′-methoxybenzylidene-p−n-butylaniline and p−n-hexyloxybenzylidene-p′-aminobenzonitrile. For both compounds this angle reaches a peak value at the nematic-isotropic transition point. Experimental evidence is reported for the first time that flow alignment does not occur over the entire mesophase of certain nematics.

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