Dense diblock-copolymers (DBC) system has been a subject of intense research (theoretically and experimentally) for the past few decades. Apart from its potential industrial applications, it also represents a complex and an interesting system to investigate from the theoretical point of view.

We study, via a Molecular Dynamics simulation, the order and phase behavior of a DBC/nanoparticles mixed system in confinement and in bulk. In particular, we are interested to understand the influence of an external fields on the global phase behavior of the system.