液晶の電気流体力学的不安定性と弱非線形パターン

抄録

Physics of pattern formation in weakly nonlinear regimes in the electrohydrodynamic instability of nematic liquid crystals is described. Depending on initial symmetries such as planar and homeotropic alignments, the observed pattern dynamics are obviously different. In order to clarify the nonlinear pattern dynamics the so-called Busse Balloons are obtained for both cases. For the planar case, the experimentally obtained balloon fits well with one theoretically expected. For the homeotoropic case however it does not fit at all and no theory expects it. This is due to appearance of the Goldstone mode.