The goal of my current research program has been to make significant theoretical advances con cerning the electrodynamic behavior of current-carrying superconductors subjected to mag netic fields. Recently I have been giving greatest attention to the high-temperature superconduc tors, first discovered in 1986. Problems that I am particularly interested in include flux pinning, critical currents, flux flow, ac losses, noise, spiral and intersecting vortices, instabilities, surface and interface effects, proximity effects, and two- and three-dimensional arrays of Josephson junctions. Although my focus is generally on the solution of fundamental problems, I always have been strongly motivated by the fact that a solidly based theoretical understanding of the above interrelated subjects is needed to make the most effective use of superconductors in various applications, both large-scale (e.g., wire and tapes for high-field magnets and power transmission lines) and small-scale (e.g., filters, resonators, and Josephson devices for use in sensitive detectors and logic devices.)

• Ph.D. Physics, University of Illinois, 1965
• M.S. Physics, University of Illinois, 1962
• B.S. Engineering Physics, University of Illinois, 1960

• 2001 - 2010 Contract Associate (1/4 time), Ames Laboratory
• 1992 - 1993 Visiting Scientist, Electric Power Research Institute, Palo Alto, CA
• 1992 - 1993 Visiting Professor of Applied Physics, Stanford University, Stanford, CA
• 1985 - 1986 Visiting Scientist, IBM Thomas J. Watson Research Center, Yorktown Heights, NY
• 1982 - 1985 Chairman, Department of Physics, Iowa State University
• 1975 - 2001 Senior Physicist, Ames Laboratory
• 1974 - 1975 Fulbright Research Fellow, Kernforschungsanlage Jülich, Germany
• 1971 - 2010 Various appointments as Consultant at Los Alamos National Laboratory, Argonne National Laboratory, Brookhaven National Laboratory, IBM Thomas J. Watson Research Center, Allied-Signal Aerospace Company, Underground Systems, Inc., American Superconductor Corporation, Pirelli Cable Corporation
• 1970 - 1975 Physicist, Ames Laboratory
• 1967 - 1970 Associate Physicist, Ames Laboratory
• 1966 - 1967 Visiting Research Fellow, Technical University, Munich, Germany
• 1965 - 1966 Research Associate, University of Maryland

• 2010 American Physical Society Outstanding Referee
• 2004 Fellow, Institute of Physics, London
• 1999 Most Valuable Instructor (teaching award from graduate students in the Iowa State University Department of Physics and Astronomy, 2000)
• 1997 Phi Kappa Phi Centennial Medalist, Iowa State University Chapter of Phi Kappa Phi
• 1991 Teaching Award from Graduate Students in the Iowa State University Department of Physics and Astronomy
• 1990 For contributions to the superconductivity community, Applied Superconductivity Conference, Inc.
• 1988 DOE Annual Award for Sustained Outstanding Research in Solid State Physics
• American Association of University Professors
• 1982 Fellow, American Physical Society