Dennis C. Prieve, PhD, Gulf Professor of Chemical Engineering at Carnegie-Mellon University, will discuss "Electrolyte-Dependent 2-D Aggregation of Colloidal Particles on a Planar A/C Electrode" on March 24 at 2:45 p.m. in Kupfrian Hall Room 117. The lecture is part of the Spring 2008 Chemical Engineering Department Graduate Seminar Series.