Electrical Conductivity of Liquid Crystal Mixtures with Induced Smectic Phases
作者： M. Bock , G. Heppke , E. J. Richter , F. Schneider
DOI: 10.1080/00268947808085005
关键词: Anisotropy 、 Conductivity 、 Electrical resistivity and conductivity 、 Liquid crystal 、 Phase (matter) 、 Materials science 、 Analytical chemistry 、 Crystallography 、 Benzonitrile 、 Polar 、 Component (thermodynamics)
摘要: Abstract The electrical conductivity of the two liquid crystal mixtures N-(4-ethoxybenzylidene)-4′-amino benzonitrile (PEBAB)/4,4′-di-n-hexyloxy-azoxybenze (HEXOAB) and 4-n-heptyloxy-4′-cyanobiphenyl (7 CBP)/HEXOAB, which exhibit induced smectic A phases is investigated. In phases, anisotropy PEBAB/HEXOAB negative at lowest PEBAB concentrations; this behaviour usually expected for a layer structure. With increasing concentration increases becomes positive. Possibly, an indication growing double structure, was observed in polar phases. nematic pure HEXOAB considerably reduced by adding relatively small amount component. An addition 10 mole% 7 CBP reduces ratio to V = K∥/K 1 ≈ 0.2, probably value phase so far. Besides c...
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