My research interests lie in the use of x-rays and electrons for probing the structure of solids, liquids, surfaces, and interfaces. Specifically, I am interested in using x-ray absorption spectroscopy and x-ray scattering to study the structure of solid-solid and solid-liquid interfaces, random semiconductor alloys, two-dimensional phase transitions at surfaces and interfaces, the structure of liquids, and biological and environmental problems. My personal interests largely involve fundamental problems in condensed-matter physics, but our research is deeply involved in interdisciplinary studies of environmental geochemistry, nanoparticle/nanowire structure and function, catalysis, metallochemistry, and other areas.
This research largely requires the use of very intense x-rays
available only at national synchrotron-radiation sources. To this end, I have
been very active with two research