Pretransitional effects near blue phases of a cholesteric liquid crystal
Demikhov E. I., Dolganov V. K.
The rotation of the polarization plane of light (RPPL) in an isotropic liquid and in the blue and "foggy" phases of a short-pitch cholesteric liquid crystal (LC) is measured. Nonmonotonic behavior of the pretransitional RPPL is observed near the transition to the "foggy" phase. The coefficients in the Landau-de Gennes expansion are determined.
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![](/ps/1484/article_22639_800_head.png "The rotation of the polarization plane of light (RPPL) in an isotropic liquid and in the blue and "foggy" phases of a short-pitch cholesteric liquid crystal (LC) is measured. Nonmonotonic behavior of the pretransitional RPPL is observed near the transition to the "foggy" phase. The coefficients in the Landau-de Gennes expansion are determined.")