Our group’s interests include the behavior of liquid, colloidal and living systems on length scales that are much greater than atomic.  A particular aim has been to understand the social behavior of microbes along with the physicochemical systems that enable their intercellular communication. 

A central focus of our current work is a new form of X-ray spectroscopy based on inelastic scattering coincident with deexcitation radiation. We believe that this is a potent approach for studying quantum matter. Here our focus is on correlated electron behavior and new photon effects in solids and atoms. 

• Associate Professor, Physics, Cornell University, 1988-present
• Visiting Professor, Physics, University of Bristol, England, 1991
• Member, American Physical Society
• Assistant Professor, Physics, Cornell University, 1982-1988
• Research Assistant and Postdoctoral Research Associate, University of Virginia, Charlottesville, 1977-1982
• Ph.D. in Physics, Princeton University, 1978
• A.B, Harvard College, 1974