Structure of supersaturated solution and crystal nucleation induced by diffusion

► A seed crystal introduced in stagnant solution induces crystal nucleation. ► The place at which nucleation is induced is far from the seed crystal. ► Since there is no convection, it is denied that crystals come from the seed crystal. ► A separate experiment verifies that diffusion of solute molecules induces nucleation. ► Induction of nucleation by diffusion may be caused by deformation of associates.