ライオトロピック液晶ラメラ相およびスポンジ相の動的光散乱

抄録

We measured the fluctuations in the lyotropic liquid crystal lamellar (L_α) phase and the sponge (L₃) phase in a dilute region of surfactant concentration by the dynamic light scattering technique. We observed the concentration fluctuation induced by the thermal undulation of layers in the L_α phase and obtained the dependence of the effective rigidity k_c of layers can the repeat distance d, which reflected the fluctuation-induced layer softening. Further, two kinds of fluctuation modes were observed in the L₃ phase.