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.<\/p>\n
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 groups for the construction and operation of beamlines at the National Synchrotron Light Source. I am also the Director of a collaboration that has built and now operates two beamlines at the Advanced Photon Source<\/a>, the only high-energy “Third Generation” x-ray synchrotron source in North America. This group, the “Materials Research Collaborative Access Team” (MRCAT)<\/a> involves Notre Dame, Illinois Institute of Technology, Argonne National Laboratory, the US Environmental Protection Agency, UOP\/Honeywell, and the BP Corporation. I am also past Chair of the International X-Ray Absorption Society<\/a>, a user organization with over 1,100 members, and a Fellow of the American Physical Society.<\/p>\n","protected":false},"excerpt":{"rendered":" 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 […]<\/p>\n","protected":false},"author":2469,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-26","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/pages\/26","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/users\/2469"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/comments?post=26"}],"version-history":[{"count":1,"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/pages\/26\/revisions"}],"predecessor-version":[{"id":27,"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/pages\/26\/revisions\/27"}],"wp:attachment":[{"href":"https:\/\/sites.nd.edu\/bbunker\/wp-json\/wp\/v2\/media?parent=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}