Seminarium Fizyki Materii Skondensowanej

In the first part of the talk amphiphilic systems are compared with systems containing sphericalparticles attracting each other at small-, and repelling each other at large distances (SALRinteractions). We show that close similarity between phase diagrams in these systems followsfrom the fact that both of them can be described by the Landau-Brazovskii (LB) functional. Keysteps of the coarse-graining procedure applied to the SALR system and leading to the LBfunctional are presented.In the second part of the talk exact results for one-dimensional (1D) versions of the SALRmodel and a model for lipids in water are compared. We show that the self-assembly leads tonumerous anomalies (such as increasing pressure for decreasing temperature at fixed density)that are associated with structural reorganizations that occur in response to changes of thethermodynamic state. The phase diagram of the SALR model in 2D will be presented if timeallows.