I have seen the terms grain and crystal size used when talking about properties that change as a function of film annealing. Is there any difference between grain, crystal or even particulate size that anyone can explain to me? Thanks to all, Evelyn -- EVELYN BENABE Graduate Research Assistant RF Microsystems Research Group University of South Florida 4202 East Fowler Avenue Tampa, FL 33620 Office: ENB 412 Office Phone: (813)-974-4851