2A04 I-N-SmA-SmC相転移点近傍における相転移ダイナミクス(ソフトマター,口頭発表,2015年日本液晶学会討論会)

抄録

We propose a simple Ginzburg-Landau model for phase transition dynamics in liquid crystals. This model is capable to reproduce phase transitions among isotropic, nematic, smectic A and smectic C phases with controlling only a few parameters. On the basis of this model, we also demonstrate numerical simulations. We observed that a polydomain pattern is formed in an early stage of isotropic-smectic A transition and its characteristic length grows in time as l ∝ t^0.25, for example. On the other hand, phase transition into smectic C shows a zigzag pattern, which coarsens in time more slowly.