The City College of New York, The City University of New York: Albert Einstein Professor of Science and Engineering Emeritus, 2014 - Present Director, The Benjamin Levich Institute for Physico-Chemical Hydrodynamics, 2000 - 2015 Albert Einstein Professor of Science and Engineering, 2001 - 2014 Distinguished Professor of Chemical Engineering, 1999 - 2014 Professor of Physics, 2001 - 2014 Lawrence Berkeley National Laboratory: Program Leader, Polymers and Composites, Center for Advanced Materials, 1983 - 1999 Head of Materials Chemistry, Materials Sciences Division, 1995 - 1998 University of California at Berkeley: Professor of Chemical Engineering, 1981- 99 (Chairman, Department of Chemical Engineering, 1991 - 1994) University of Delaware: Allan P. Colburn Professor, 1977-1981 Assistant Professor to Professor of Chemical Engineering, 1965 - 1977 Visiting Positions: Massachusetts Institute of Technology, Dept. of Chem. Eng., Visiting Lecturer, 1978 - 1985 Technion-Israel Institute of Technology, Harry Pierce Professor, Sept., 1979 - Jan., 1980 California Institute of Technology, Chevron Energy Professor, Feb. - July, 1980 University of Melbourne, Australia, Visiting Professor, Jan. - June, 1985 Hebrew University, Israel, Forchheimer Visiting Professor, Sept., 1998 - Jan., 1999 Hebrew University, Israel, Lady Davis Visiting Professor, Oct. 2009 - May 2010 Katholieke Universiteit Leuven, Erasmus Mundus Scholar, Eurheo Program, May - June 2011, 2014 University of Amsterdam, Institute of Physics, Visiting Scholar, June 2012, 2013, 2014, 2015

The use of rheology, non-Newtonian fluid mechanics, and polymer and particle physics to solve problems of interest in materials processing. We use whatever tools are most appropriate for the problem at hand, often in collaboration with colleagues who have specific expertise: continuum theory and simulation, molecular and particle-scale simulation, rheological measurement, and various spectroscopies.