Condensed Matter Physics
Professor Bunker’s research interests lie in the use of x-rays and electrons for probing the structure of solids, liquids, surfaces, and interfaces. Specifically, his group is involved with using x-ray absorption spectroscopy (XAS) and x-ray scattering to study the structure of random semiconductor alloys, solid-solid and solid-liquid interfaces, two-dimensional phase transitions at surfaces and interfaces, and structure of liquids, and systems of environmental interest. His personal interests largely involve fundamental problems in condensed-matter physics, but there are often technologically or environmentally interesting applications as well.
This research largely requires the use of very intense x-rays available only at national synchrotron-radiation sources. He is the director of the MRCAT, an inter-institutional “collaborative access team” designing, building, and using beamlines at the Advanced Photon Source at Argonne National Laboratory. This “high-brightness” facility offers the capability of performing many new experiments previously difficult or impossible. The facility currently operates a high-brightness undulator beamline and a general-use bending-magnet beamline.
Xue Rui, Man Jae Kwon, Edward O'Loughlin, Sarrah, Dunham-Cheatham, Jeremy Fein, Bruce Bunker, Kenneth Kemner, Maxim Boyanov, Bioreduction of hydrogen uranyl phosphate: mechanisms and U(IV) products, Environmental Science & Technology 47, 5668–78 (2013).
Zhen Song, Janice P.L. Kenney, Jeremy B. Fein, Bruce A. Bunker, “An X-ray Absorption Fine Structure study of Au adsorbed onto the non-metabolizing cells of two soil bacterial species”, Geochimica et Cosmochimica Acta, 86, 103–117 (2012).
Kevin M McPeak, Matthew A Becker, Nathan G Britton, Hasti Majidi, Bruce A Bunker, Jason B Baxter, “In Situ X-ray Absorption Near-Edge Structure Spectroscopy of ZnO Nanowire Growth During Chemical Bath Deposition”, Chem. Mater., 22 (22), pp 6162–6170. DOI: 10.1021/cm102155m (2010).
Sarrah Dunham-Cheatham, Xue Rui, Bruce Bunker, Roland Hellmann, Nicolas Menguy, and Jeremy Fein, "The effects of non-metabolizing bacterial cells on the precipitation of metal phosphates", Geochimica et Cosmochimica Acta 75, 2828-2847 (2010).
Honors and Awards
- Chair, Executive Committee of the International XAFS Society
- American Physical Society Fellow
- Director, Materials Research Collaborative Access Team, Advanced Photon Source, Argonne, National Laboratory
- Member, Beamline Advisory Teams, Inner Shell Spectroscopy (ISS), Tender X-ray Spectroscopy, and Quick Absorption Spectroscopy (QAS) beamlines at NSLS II, Brookhaven National Laboratory