Group Leader, Nanoscale Integration Science
Materials Science Division
Phone: +19254246084


  • Graduate Certificate, National Security Affairs, Texas A&M University, 2014
  • Ph.D., Physics, University of California Davis, 2004
  • M.S., Physics, University of California Davis, 1999
  • B.S., Physics, Utah State University, 1997

Research Interests

  • Small-angle x-ray scattering for probing structure of micro- and nanoporous materials
  • Synchrotron radiation techniques for materials characterization
  • Time-resolved x-ray techniques to interrogate nanoscale and nanosecond phenomena during detonation
  • X-ray microtomography for microstructure of engineered materials
  • X-ray spectroscopies to investigate structural, orientational, and electronic properties of monolayers for molecular electronics, and evolution of electronic structure in semiconductor and diamond nanocrystals

Honors and Awards

  • Early- and Mid-Career Award, LLNL, 2019
  • Director’s Science & Technology Awards, LLNL, 2017, 2016, 2013
  • Department of Energy, Office of Science, Outstanding Mentor Award, 2010

Selected Publications

  1. M.H. Nielsen, J.A. Hammons, M. Bagge-Hansen, L.M. Lauderbach, R.L. Hodgin, K.M. Champley, W.L. Shaw, N. Sinclair, J.A. Klug, Y.L. Li, A. Schuman, A.W. van Buuren, E.B. Watkins, R.L. Gustavsen, R.C. Huber, and T.M. Willey, Single-bunch imaging of detonation fronts using scattered synchrotron radiation, Journal of Applied Physics 123 (22), 225902 (2018), doi: 10.1063/1.5029912.
  2. T.M. Willey, K. Champley, R. Hodgin, L. Lauderbach, M. Bagge-Hansen, C. May, N. Sanchez, B.J. Jensen, A. Iverson, and T. van Buuren, X-ray Imaging and 3D Reconstruction of In-Flight Exploding Foil Initiator Flyers, Journal of Applied Physics 119 (23), 235901 (2016), doi: 10.1063/1.4953681.
  3. M. Bagge-Hansen, L. Lauderbach, R. Hodgin, S. Bastea, L. Fried, A. Jones, T. van Buuren, D. Hansen, J. Benterou, C. May, T. Graber, B.J. Jensen, J. Ilavsky, and T.M. Willey, Measurement of Carbon Condensates Using Small-angle X-ray Scattering During Detonation of the High Explosive Hexanitrostilbene, Journal of Applied Physics 117, (24) 245902 (2015), doi: 10.1063/1.4922866.
  4. T.M. Willey, L. Lauderbach, F. Gagliardi, T. van Buuren, L. Glascoe, J. Tringe, J.R.I. Lee, H.K. Springer, and J. Ilavsky, Mesoscale Evolution of Voids and Microstructural Changes in HMX-based Explosives During Heating Through the beta-delta Phase Transition, Journal of Applied Physics 118 (5), 055901 (2015), doi: 10.1063/1.4927614.
  5. M. Bagge-Hansen, B.C. Wood, T. Ogitsu, T.M. Willey, I.C. Tran, A. Wittstock, M.M. Biener, M.D. Merrill, M.A. Worsley, M. Otani, C.-H. Cuang, D. Prendergast, J. Gou, T.F. Baumann, T. van Buuren, Jurgen Biener, J.R.I. Lee, Potential-induced Electronic Structure Changes in Supercapacitor Electrodes Observed by In Operando Soft X-ray Spectroscopy, Advanced Materials 27 (9), 1512 (2015), doi: 10.1002/adma.201403680.
  6. M. Bagge-Hansen, A. Wichmann, A. Wittstock, J.R.I. Lee, J.C. Ye, T.M. Willey, J.D. Kuntz, T. van Buuren, J. Biener, M. Baumer, and M.M. Biener, Quantitative Phase Composition of TiO2-Coated Nanoporous Au Monoliths by X-ray Absorption Spectroscopy and Correlations to Catalytic Behavior, Journal of Physical Chemistry C 118 (8), (2014), doi: 10.1021/Jp4089639, 4078-4084.
  7. T.M. Willey, M. Bagge-Hansen, J.R.I. Lee, R. Call, L. Landt, T. van Buuren, C. Colesniuc, C. Monton, I. Valmianski, and I.K. Schuller, Electronic structure differences between H-2-, Fe-, Co-, and Cu-phthalocyanine highly oriented thin films observed using NEXAFS spectroscopy, Journal of Chemical Physics 139 (3), 034701 (2013), doi: 10.1063/1.4811487.
  8. T.M. Willey, J.D. Fabbri, J.R.I. Lee, P.R. Schreiner, A.A. Fokin, B.A. Tkachenko, N.A. Fokina, J.E. Dahl, R.M.K. Carlson, A.L. Vance, W. Yang, L.J. Terminello, T. van Buuren, and N.A. Melosh, Thiol-Modified Diamondoid Monolayers on Gold Studied with Near-Edge X-ray Absorption Fine Structure Spectroscopy, Journal of the American Chemical Society 130, 10536 (2008).
  9. W.L. Yang, J.D. Fabbri, T.M. Willey, J.R.I. Lee, J.E. Dahl, R.M.K. Carlson, P.R. Schreiner, A.A. Fokin, B.A. Tkachenko, N.A. Fokina, W. Meevasana, N. Mannella, K. Tanaka, X.J. Zhou, T. van Buuren, M.A. Kelly, Z. Hussain, N.A. Melosh, and Z.X. Shen, Monochromatic Electron Photoemission from Diamondoid Monolayers, Science 316, 1460 (2007).
  10. J.R.I. Lee, T.Y.-J. Han, T.M. Willey, D. Wang, R.W. Meulenberg, J. Nilsson, P.M. Dove, L.J. Terminello, T. van Buuren, and J. De Yoreo, Structural Development of Mercaptophenol Self-Assembled Monolayers and the Overlying Mineral Phase during Templated CaCO3 Crystallization from a Transient Amorphous Film, Journal of the American Chemical Society 129, 10370 (2007).
  11. T.M. Willey, J. Handly B. Weeks, T. van Buuren, J. Kinney, J. Lee, G. Overturf, and J. Ilavsky, Changes in Pore Size Distribution upon Thermal Cycling of TATB-based Explosives Measured by Ultra-Small Angle X-ray Scattering, Propellants, Explosives, Pyrotechnics 31, 466 (2006).
  12. T.M. Willey, C. Bostedt, T. van Buuren, J.E. Dahl, S.G. Liu, R.M. K. Carlson, L.J. Terminello, and T. Möller, Molecular Limits to the Quantum Confinement Model in Diamond Clusters, Physical Review Letters 95, 113401 (2005).
  13. T.M. Willey, A.L. Vance, T. van Buuren, C. Bostedt, L.J. Terminello, and C.S. Fadley, Rapid Oxidation of Alkanethiol-Based Self-Assembled Monolayers on Gold in Ambient Laboratory Conditions, Surface Science 576 (1-3), 188 (2005).
  14. T.M. Willey, A.L. Vance, T. van Buuren, C. Bostedt, R.W. Meulenberg, L.J. Terminello, and C.S. Fadley, Surface Structure and Chemical Switching of Thioctic Acid Adsorbed on Au(111) as Observed Using NEXAFS, Langmuir 20 (12), 4939 (2004).
  15. T.M. Willey, A.L. Vance, T. van Buuren, C. Bostedt, L.J. Terminello, and C.S. Fadley, Chemically Transformable Configurations of Mercaptohexadecanoic Acid  Self-Assembled Monolayers Adsorbed on Au(111), Langmuir 20 (7), 2746 (2004).
  16. A.L. Vance, T.M. Willey, T. van Buuren, A.J. Nelson, C. Bostedt, G.A. Fox, and L.J. Terminello, XAS and XPS Characterization of a Surface-Attached Rotaxane, Nano Letters 3 (1), 81 (2003).