  We use numerical simulations to study the phase behavior of self-propelled
spherical and dumbbellar particles interacting via micro-phase separation
inducing potentials. Our results indicate that under the appropriate
conditions, it is possible to drive the formation of two new active states; a
spinning cluster crystal, i.e. an ordered mesoscopic phase having finite size
spinning crystallites as lattice sites, and a fluid of living clusters, i.e. a
two dimensional fluid where each "particle" is a finite size living cluster. We
discuss the dynamics of these phases and suggest ways of extending their
stability under a wide range of active forces.
