Models, crystallization process product characteristics

Batch crystallization process control using the first-principles and direct design approaches were discussed. The first-principles approach utilizes crystallization process models, which require the associated determination of crystallization kinetics. The optimal seed characteristics and/or supersaturation profile to obtain the desired product characteristics are then computed. The direct design approach involves feedback control of a state measurement, in this case the solution... 

Nowadays this heterojunction is one of the most exhaustively studied. There is extensive hterature repwrting results of experimental studies of production processes, properties, and theoretical models describing characteristics of an ideal heterojunction and deviations from them occurring in the paesence of different imperfections and defects. Such heterostructure is notable for the same type of symmetry of crystal lattices on both sides of the interface and perfectly matching lattice periods. Distinctions caused by the type of valency bond in GaAs and Ge are studied in great detail both theoretically and experimentally. It was shown that during formation of the heterointerface a transitive mixed composition layer is formed on... 

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