Block copolymer microphase separation: kinetics, fluctuations, synergism and topological constraints

摘要

This talk discusses several issues of current interest in block copolymer microphase separation. The talk consists of two parts. The first part deals with kinetic of order-order and order-disorder transitions in AB diblock copolymers. results from direct numerical simulation as well as a simplfied mode-analysis using a time-dependent Ginzburg-Landau approach will be presented. A focus here is the existence and nature of certain kinetic states during the phase transitions. In particular, we highlight pseudostable and transient states--corresponding respectively to saddle points and ridege-like features in the free energy surface.