  Morphology evolution and coarsening of metal nanoislands is computed within
the framework of a surface diffusion-type model that includes the effects of
the electron energy confinement within the film, the charge spillage at the
film/substrate interface, the energy anisotropy of the film surface and the
surface stress. The conditions that result in large islands with flat tops,
steep edges, and strongly preferred heights are determined. A strong influence
of the film height on the coarsening dynamics and final morphologies is found;
the conditions leading to interrupted coarsening are highlighted. The
dependence of the geometric parameters of the equilibrium island on the film
height and on the island initial volume is computed.
