The morphology of vapor grown C60 crystals as an ideal example of the Gibbs-Wulff’s law

C60 crystals grown from the vapor phase display only faces of a cubo-octahedron. The shape is derived from the Gibbs-Wulff’s law by estimating the surface energies from the heat of evaporation and from considering the van der Waals interaction between first, second, third and fourth neighbored C60 molecules. In addition the critical size of a C60 nucleus formed on a fused silica wall is estimated from measured critical supercoolings.