Dynamical Behavior of Prewavy Pattern near Nematic--Isotropic Transition
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概要
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We report new results about a type of electrohydrodynamic instability, the prewavy instability, in a homeotropic nematic liquid crystal in a high-frequency electric field. This instability is seen in the form of a series of bright and dark stripes in between two crossed polarizers. The stripe formation corresponds to the periodic modulation of the rotation angle of the director in the xy-plane with periodicity along the x-direction. The dynamical behavior of prewavy patterns near the nematic--isotropic transition is reported. We found that the isotropic phase, due to the Joule heating effect, starts to grow in the dark stripes, i.e., in the vicinity of in-plane rotation angle \alpha = 0.
- 2013-04-15
著者
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Hidaka Yoshiki
Department Of Applied Physics Faculty Of Engineering Kyushu University
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Kai Shoichi
Departemnt Of Applied Physics Kyushu University
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Yusuf Yusril
Physics Department, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta 55281, Indonesia
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