3C12 ネマチック液晶のパターン・ダイナミクスにおける空間摂動の効果

概要

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An experimental study on pattern formation processes under spatially-periodic external force in the electro-convection system is reported. The formation processes of periodic pattern in electroconvection of a nematic liquid crystal beyond the threshold were observed with changing amplitude of the periodic force and mismatch between wavenumber of the periodic force and spontaneous wavenumber of the convection pattern. At the initial stage of the formation process, the wavenumber and the phase of the convection pattern synchronized with the periodic external force, that is, the convection pattern was entrained into the periodic force. However, for small amplitude of the force or large mismatch between the wavenumber of the entrained pattern and the spontaneous wavenumber, the entrainment was broken at the latter stage of the process. The breaking of the entrainment was investigated in detail by measurement of wavenumber at the initial stage and the latter stage.
日本液晶学会の論文
1998-10-12