JOHN B. WACHTMAN, PhD, is Sosman Professor of Ceramics at Rutgers University, where he has taught since 1983. Since he received his degree from the University of Maryland in 1961, he has worked as a research scientist, division chief, and as the director of the Center for Materials Research at the National Bureau of Standards. Professor Wachtman is the author of Characterization of Materials and holds many honors, awards, and offices in various scientific societies.