The Behaviour of Thin Samples of Ferroelectric Liquid Crystals |
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| Authors: | Milada Glogarová Jiří Pavel |
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| Institution: | Institute of Physics, Czech. Acad. Sci. , Na Slovance 2, 180 40, Prague 8, Czechoslovakia |
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| Abstract: | On a ferroelectric liquid crystal DOBAMBC transitions between helical and twisted structures are observed if changing the temperature. The twisted structure appears when the helical pitch becomes comparable to the sample thickness, From the switching process of the twisted DOBAMBC samples in an electric field the polarity of surface layers is determined. Low signal di- electric permittivity shows an increase below the transition to the ferroelectric phase, which is a consequence of the twisted structure deformation in the electric field. |
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