Interface between Lamellar and Gyroid Structures in Diblock Copolymer Melts

Abstract

We investigate the properties of a planer interface separating a lamellar structure and a gyroid structure in AB-type diblock copolymers. Depending on the relative orientation between lamellar and interface planes, we find that there are three different structures of an interface. Motion of an interface invading the unstable state is also studied numerically.