Crystallization and order-disorder transition of colloidal particles in a drying suspension: a phase field crystal approach

摘要: Using a phase field crystal model we study the structure and dynamics of drop colloidal suspension during evaporation solvent. We an experimental system where contact line pinning on substrate is non-existent. Under such carefully controlled conditions, produces ordered or disordered arrangement residue depending initial average density solute drying rate. obtain non-equilibrium boundary showing amorphous crystalline phases single component binary mixtures particles in density- rate plane. While colloids order two dimensional triangular lattice, symmetric mixture mutually repulsive orders three sub-lattice sub-lattices lattice are occupied by species with third vacant.