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Prewavy instability of nematic liquid crystals in a high-frequency electric field
Jong-Hoon Huh1, Yusril Yusuf, Yoshiki Hidaka
1Department of Mechanical Systems Engineering, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 820-8502, Japan.
Abstract:
A kind of electrohydrodynamic instability, the prewavy instability, in nematic liquid crystals is reported. The characteristic of the instability was optically investigated and discussed in comparison with some similar instabilities. Obviously the instability partially shows an isotropic feature around the nematic-isotropic transition temperature. Owing to the characteristic properties of the flow and the spatial periodicity, it should be distinguished from a previously proposed isotropic instability.