  We study the self-assembly on a spherical surface of a model for a binary
mixture of amphiphilic dimers in the presence of guest particles via Monte
Carlo (MC) computer simulation. All particles have a hard core, but one monomer
of the dimer also interacts with the guest particle by means of a short-range
attractive potential. We observe the formation of aggregates of various shape
as a function of the composition of the mixture and of the size of guest
particles. Our MC simulations are a further step towards a microscopic
understanding of experiments on colloidal aggregation over curved surfaces,
such as oil droplets.
