JAMES A. WINGRAVE is an Assistant Professor, University of Delaware, Newark. The author or coauthor of over 20 technical publications, Dr. Wingrave is an advisory board member of the Journal of Colloid and Interface Science and holds ten United States patents. He received the B.A. degree (1969) in chemistry from Emporia State University, Kansas, and the Ph.D. degree in physical chemistry from the University of Texas at Austin.