Fig. 6

Effect of surface diffusion on the shape of aggregates obtained with the DLA growth model. The square lattice is made of 256 * 256 sites. The monomers are inserted far away from the growing structure that is a single site at the beginning of the simulation. The number of surface-diffusion step is 1 (a), 10 (b), and 20 (c). The filling degree of the aggregates is indicated on each image. The green-to-red color scale indicates the time at which aggregation occurred: the oldest aggregation events appear in green and the most recent in red