1. Adolf C. and Mary Sprague Miller Institute postdoctoral fellow in the Chemistry Department at the University of California, Berkeley, and a guest scientist at the Materials and Molecular Research Division of the Lawrence Berkeley Laboratory, Berkeley, California 94720.
2. Professor and chairman of the Chemistry Department at the University of California, Berkeley, and faculty senior scientist with the Materials and Molecular Research Division of the Lawrence Berkeley Laboratory.
3. National Science Foundation predoctoral fellow in the Chemistry Department at the University of California, Berkeley.