We consider pattern formation during the supercooling solidification of a pure material, using a phase field model. The model gives rise to a rich variety of \threed/ patterns, including very realistic dendritic crystal forms. We show how the strength of anisotropy has a crucial influence on the shape of crystals.
"A numerical approach to three-dimensional dendritic solidification." Experiment. Math. 3 (1) 59 - 81, 1994.