Fluid patterns in the diffusive field around a growing crystal

Abstract The use of simultaneous diffusion of particles in a modified DLA system [Witten and Sander, Phys. Rev. Letters 47 (1981) 1400; Phys. Rev. B 27 (1983) 5686], leading to several morphologycal outputs, permitted us to observe the diffusive field around the growing cluster. We show that the existence of morphological instabilities produces the symmetry breaking of the diffusive field around the cluster and the formation of preferred flow induced by a morphological instability.