Diffusion-Limited Aggregation with Tunable Lattice Anisotropy

Abstract
A new approach is proposed to enhance the effect of lattice anisotropy on diffusion-limited aggregation (DLA) model. The computer simulations on the square lattice clearly show the morphological change of overall profile of the patterns from random fractal to more or less regular dendritic crystal-like and finally to needle crystal-like “cross” shapes. This implies the close relationship between DLA and real dendritic crystal growth.