摘要: The nematic-smectic-$A$ transition temperature of mixtures HBAB {$p$-[($p$-hexyloxybenzylidene)-amino]benzonitrile} and CBOOA [N-$p$-cyanobenzylidene-$p\ensuremath{-}n$-octyloxyaniline] becomes multivalued with increasing concentration HBAB. nematic phase occurs at both a higher lower than the smectic phase. Measurements bend elastic constant as function are presented.
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