Figure 6: Surface evolution simulation.
From: Growth and modelling of spherical crystalline morphologies of molecular materials

(a) Evolution of surface from wave to lobe shape. Scale bar 1 μm. (b) Simulated evolution from wave into lobe shape modelled using finite element difference approach. (c) Contour plot of possible final geometries with respect to deviation from surface, as a function of dimensionless ratio of material surface energy gamma and initial maximal elastic energy W0 to material bulk energy g (gas–solid phase transition enthalpy in this case). l, characteristic length-scale of interest, taken here as 1 nm.