Morphological diagram of diffusion driven aggregate growth in plane: Competition of anisotropy and adhesion Original Research Article

Two-dimensional structures grown with Witten and Sander algorithm are investigated. We analyze clusters grown off-lattice and clusters grown with antenna method with image and 8 allowed growth directions. With the help of variable probe particles technique we measure fractal dimension of such clusters image as a function of their size N. We propose that in the thermodynamic limit of infinite cluster size the aggregates grown with high degree of anisotropy (image) tend to have fractal dimension D equal to 3/2, while off-lattice aggregates and aggregates with lower anisotropy (image) have image. Noise-reduction procedure results in the change of universality class for DLA. For high enough noise-reduction value clusters with image have fractal dimension going to 3/2 when image.