Observation of a topological relaxation mode in microemulsions.

摘要: We report the observation of two diffusive relaxation modes in a very swollen microemulsion, measured by quasielastic light scattering experiments. In addition to short-time diffusion process, we observe long-time mode with unusual scaling behavior: constant D is an exponential function characteristic length scale xi, D~exp(-xi). This provides experimental evidence for thermally activated topological random fluid phases, as predicted Milner et al. [J. Phys. (Paris) 51, 2629 (1990)]. describe activation energy such process some simple microscopic model surfactant layer and give estimation membrane elastic Gaussian moduli kappa kappa;, its spontaneous curvature.