Temperature-and field-induced transitions in free-standing films of an antiferroelectric liquid crystal |
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| Authors: | P V Dolganov E I Demikhov Y Suzuki A Fukuda |
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| Institution: | (1) Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(2) Central Research and Development Laboratory, Showa Shell Sekuyi, K. K., Atsugi Kanagawa 243-0206, Japan;(3) Department of Kansei Engineering, Shinshu University, Ueda 386-8567, Japan |
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| Abstract: | Thin free-standing films of a compound with the smectic-C A * and smectic-C α * phases were investigated by means of depolarized microscopy and optical reflectivity. In thin films, the smectic phase sequence C A * ?Cα/*?A is replaced by a series of temperature-and field-induced transitions into states with the coplanar orientation of molecular tilt planes. Transitions are accompanied by a change in the direction of the electric polarization with respect to the tilt plane of molecules. The coplanar structure of these states is consistent with the Ising model. |
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