Chris Jacobsen

Chris Jacobsen photo
Chris Jacobsen
PhD, Stony Brook University, 1988

Presidential Faculty Fellow (White House/NSF), 1992-1997; International Dennis Gabor Award (Hungary), 1996; Kurt Heinrich Award (Microbeam Analysis Society), 2001; R&D 100 award winner, 1999
Fellow, Optical Society of America (1999), American Association for the Advancement of Science (2002), American Physical Society (2011).

Research group, calendar, diving photos.

Contact info:
Special Advisor to the Director
Advanced Photon Source, Argonne National Laboratory
9700 S. Cass Avenue
Argonne, IL 60439-4837, USA
Office: 401-C4239
Phone +1-630-252-7960

Senior Physicist
Professor, Department of Physics & Astronomy
Northwestern University
2145 Sheridan Road
Evanston, IL 60208-3112, USA
Office: Dearborn 9B
Phone +1-847-467-2703

Faculty member, Graduate Program in Applied Physics
Faculty member, Chemistry of Life Processes Institute

Chris Jacobsen's research group is focused on developing new methods in x-ray microscopy, and applying them to interesting problems in biology, environmental science, and materials science.  Using either diffractive optics (like Fresnel zone plates fabricated using electron beam lithography), or lensless methods where iterative phase retrieval methods are used to reconstruct an image from a coherent diffraction pattern, images with a spatial resolution of 30 nm or better can be obtained.  In absorption contrast, one can combine imaging with spectroscopy to study chemical speciation at the nanoscale, or one can use fluorescence detection to study trace element distributions with parts-per-billion sensitivity.  We are also developing detectors and image reconstruction algorithms that can be used to obtain quantitative phase contrast images with hard X rays, and thus put elemental distributions into their ultrastructural context and also go from measurements of content to measurements of concentration (since concentration gradients drive chemical processes).  Finally, we are interested in understanding the limitations that radiation damage presents to x-ray microscopy studies, and in developing both cryo instrumentation and sample preparation methods to mitigate those limitations.  These efforts require bright x-ray beams, so we use synchrotron radiation sources at Argonne Lab, Berkeley Lab, and elsewhere.  Students in the group explore interesting problems in optical physics and in instrumentation, and get to broaden their perspective by working with collaborators from other research fields like biology, environmental science, and materials science.

Representative publications (full list via ORCID or ResearcherID):

  1. Kenan Li, Michael Wojcik, Leo Ocola, Ralu Divan, and Chris Jacobsen, "Multi-layer on-chip stacked Fresnel zone plates: hard x-ray fabrication and soft x-ray simulations," Journal of Vacuum Science and Technology B (2015) [open access online].
  2. Kenan Li and Chris Jacobsen, "Rapid calculation of paraxial wave propagation for cylindrically symmetric optics," Journal of the Optical Society of America A 32, 2074 (2015) [PDF logoPDF].
  3. Young Pyo Hong, Si Chen, and Chris Jacobsen, "A new workflow for x-ray fluorescence tomography: MAPStoTomoPy," Proceedings SPIE 9592, 95920W (2015) [SPIE] [PDF logoPDF].
  4. Si Chen, Junjing Deng, David J. Vine, Youssef S.G. Nashed, Qiaoling Jin, Tom Peterka, Chris Jacobsen, and Stefan Vogt, "Simultaneous x-ray nano-ptychographic and fluorescence microscopy at the bionanoprobe," Proceedings SPIE 9592, 95920I (2015) [SPIE] [PDF logoPDF].
  5. Junjing Deng, David J. Vine, Si Chen, Youssef S.G. Nashed, Tom Peterka, Rob Ross, Stefan Vogt, and Chris Jacobsen, "Opportunities and limitations for combined fly-scan ptychography and fluorescence microscopy," Proceedings SPIE 9592, 95920U (2015) [SPIE] [PDF logoPDF].
  6. Junjing Deng, Youssef S.G. Nashed, Si Chen, Nicholas W. Phililips, Tom Peterka, Rob Ross, Stefan Vogt, Chris Jacobsen, and David Vine, "Continuous motion scan ptychography: characterization for increased speed in coherent x-ray imaging," Optics Express 23, 5348-5451 (2015). [open access online].  Argonne APT 111061.
  7. Junjing Deng, David J. Vine, Si Chen, Youssef S.G. Nashed, Qiaoling Jin, Nicholas W. Phillips, Tom Peterka, Rob Ross, Stefan Vogt, and Chris Jacobsen, "Simulataneous cryo X-ray ptychography and fluorescence microscopy of green algae" PNAS 112, 2314-2319 (2015) [open access online].  Argonne APT 110881.
  8. Qiaoling Jin, Stefan Vogt, Barry Lai, Si Chen, Lydia Finney, Sophie-Charlotte Gleber, Jesse Ward, Junjing Deng, Rachel Mak, Nena Moonier, and Chris Jacobsen, "Ultraviolet germicidal irradiation and its effects on elemental distributions in mouse embryonic fibroblast cells in x-ray fluorescence analysis," PLoS ONE 10, e0117437 (2015). [open access online].  Argonne APT 110961.
  9. Yue Sun, Sophie-Charlotte Gleber, Chris Jacobsen, Janos Kirz, and Stefan Vogt, "Optimizing detector geometry for trace element mapping by x-ray fluorescence," Ultramicroscopy 152, 44-46 (2015). [open access onlineArgonne APT 110963.
  10. Youssef S.G. Nashed, David J. Vine, Tom Peterka, Junjing Deng, Rob Ross, and Chris Jacobsen, "Parallel ptychographic reconstruction," Optics Express 22, 32082-32097 (2014). [open access onlineArgonne APT 110064.
  11. Francesco De Carlo, Doga Gursoy, Federica Marone, Mark Rivers, Dilworth Y Parkinson, Faisal Khan, Nicholas Schwarz, David J Vine, Stefan Vogt, Sophie-Charlotte Gleber, Suresh Narayanan, Matt Newville, Tony Lanzirotti, Yue Sun, Young Pyo Hong, and Chris Jacobsen, "Scientific Data Exchange: a schema for HDF5-based storage of raw and analyzed data," Journal of Synchrotron Radiation 21, 1224-1230 (2014). [PDF logoPDFArgonne APT 78680.
  12. Martin D de Jonge, Christopher G Ryan, and Chris J Jacobsen, "X-ray nanoprobes and diffraction-limited storage rings: opportunities and challenges of fluorescence tomography of biological specimens," Journal of Synchrotron Radiation 21, 1031-1047 (2014). [open access onlineArgonne APT 79293.
  13. Mirna Lerotic, Rachel Mak, Sue Wirick, Florian Meirer, and Chris Jacobsen, "MANTiS: a program for the analysis of x-ray spectromicroscopy data," Journal of Synchrotron Radiation 21, 1206-1212 (2014). [PDF logoPDFArgonne APT 78672.
  14. Doga Gursoy, Francesco De Carlo, Xianghui Xiao, and Chris Jacobsen, "TomoPy: a framework for the analysis of synchrotron tomographic data," Journal of Synchrotron Radiation 21, 1188-1193 (2014). [open access onlineArgonne APT 79252.
  15. Rachel Mak, Mirna Lerotic, Holger Fleckenstein, Stefan Vogt, Stefan M Wild, Sven Leyffer, Yefim Sheynkin, and Chris Jacobsen, "Non-negative matrix analysis for effective feature extraction in x-ray spectromicroscopy," Faraday Discussions 171, 357-371 (2014). [open access online]  Argonne APT 78674.
  16. Siwei Wang, Jesse Ward, Sven Leyffer, Stefan M Wild, Chris Jacobsen, and Stefan Vogt, "Unsupervised cell identification on multidimensional x-ray fluorescence datasets," Journal of Synchrotron Radiation 21, 568-579 (2014). [PDF logoPDFArgonne APT 76387
  17. Young Pyo Hong, Sophie-Charlotte Gleber, Thomas V O'Halloran, Emily L Que, Reiner Bleher, Stefan Vogt, Teresa K Woodruff, and Chris Jacobsen, "Alignment of low-dose x-ray fluorescence tomography images using differential phase contrast," Journal of Synchrotron Radiation 21, 229-234 (2014). [PDF logoPDF]
  18. Si Chen, Junjing Deng, Ye Yuan, Claus Flachenecker, Rachel Mak, Benjamin Hornberger, Qiaoling Jin, Deming Shu, Barry Lai, Joerg Maser, Chris Roehrig, Tatjana Paunesku, Sophie-Charlotte Gleber, David J. Vine, Lydia Finney, Jay Von Osinski, Michael Bolbat, Ian Spink, Zhenyang Chen, Jay Steele, David Trapp, Jeff Irwin, Michael Feser, E. Snyder, Keith Brister, Chris Jacobsen, Gayle Woloschak, and Stefan Vogt, "The Bionanoprobe: hard x-ray fluorescence nanoprobe with cryogenic capabilities," Journal of Synchrotron Radiation 21, 66-75 (2014). [open access onlineArgonne APT 78189.
  19. Ye Yuan, Si Chen, Tatjana Paunesku, Sophie-Charlotte Gleber, William C. Liu, Caroline B. Doty, Rachel Mak, Junjing Deng, Qiaoling Jin, Barry Lai, Keith Brister, Claus Flachenecker, Chris Jacobsen, Stefan Vogt, and Gayle Woloschak, "Epidermal Growth Factor Receptor Targeted Nuclear Delivery and High-Resolution Whole Cell X‐ray Imaging of Fe3O4@TiO2 Nanoparticles in Cancer Cells," ACS Nano 7, 10502-10517 (2013). [open access onlineArgonne APT 78486.
  20. Joshua Turner, Johanna Nelson, Xiaojing Huang, Jan Steinbrener, and Chris Jacobsen, "Lensless imaging of nanoporous glass with soft x-rays," Physics Letters A 377, 1150-1153 (2013). [PDF logoPDF]
  21. Roger Falcone, Chris Jacobsen, Janos Kirz, Stefano Marchesini, David Shapiro, and John Spence, "New directions in X-ray Microscopy," Contemporary Physics 52, 293-318 (2011).  [PDF logoPDF]
  22. C. Holzner, M. Feser, S. Vogt, B. Hornberger, S.B. Baines, and C. Jacobsen, "Zernike phase contrast scanning microscopy with X-rays, Nature Physics 6, 883-887 (2010)   [PDF logoPDF]
  23. M.D. de Jonge, C. Holzner, S.B. Baines, B.S. Twining, K. Ignatyev, J. Diaz, D.L. Howard, D. Legnini, A. Miceli, I. McNulty, C.J. Jacobsen, and S. Vogt, "Quantitative 3D elemental microtomography of Cyclotella meneghiniana at 400-nm resolution," Proceedings of the National Academy of Sciences 107, 15676-15680 (2010).  [PDF logoPDF]
  24. J. Nelson, X. Huang, J. Steinbrener, D. Shapiro, J. Kirz, S. Marchesini, A.M. Neiman, J.J. Turner, and C. Jacobsen, "High resolution x-ray diffraction microscopy of specifically labeled yeast cells," Proceedings of the National Academy of Sciences 107, 7235 (2010).  [PDF
  25. J. Steinbrener, J. Nelson, X. Huang, S. Marchesini, D. Shapiro, J. J. Turner and C. Jacobsen, "Data preparation and evaluation techniques for x-ray diffraction microscopy", Optics Express 18, 18598-18614, (2010).   [PDF logoPDF]
  26.  X. Huang, J. Nelson, J. Kirz, E. Lima, S. Marchesini, H. Miao, A.M. Neiman, D. Shapiro, J. Steinbrener, A. Stewart, J.J. Turner, and C. Jacobsen, "Soft x-ray diffraction microscopy of a frozen hydrated yeast cell," Physical Review Letters 103, 198101 (2009).  [PDF logoPDF]
  27. M. Howells, T. Beetz, H. Chapman, C. Cui, J. Holton, C. Jacobsen, J. Kirz, E. Lima, S. Marchesini, H. Miao, D. Sayre, D. Shapiro, J. Spence, and D. Starodub, "An assessment of the resolution limitation due to radiation-damage in x-ray diffraction microscopy," Journal of Electron Spectroscopy and Related Phenomena 170, 4-12 (2009).  [PDF logoPDF]
  28. M. D. de Jonge, B. Hornberger, D. Paterson, C. Holzner, D. Legnini, I. McNulty, C. Jacobsen, and S. Vogt, "Quantitative phase imaging with a scanning transmission x-ray microscope," Physical Review Letters 100, 163902 (2008).  [PDF logoPDF]
  29. J. Lehmann, D. Solomon, J. Kinyangi, L. Dathe, S. Wirick, and C. Jacobsen, "Spatial complexity of soil organic matter forms at nanometre scales," Nature Geoscience 1, 238-242 (2008).  [PDF logoPDF]
  30. D. Shapiro, P. Thibault, T. Beetz, V. Elser, M. Howells, C. Jacobsen, J. Kirz, E. Lima, H. Miao, A. M. Neiman, and D. Sayre, "Biological imaging by soft x-ray diffraction microscopy," Proceedings of the National Academy of Sciences 102, 15343-15346 (2005).   [PDF logoPDF]
  31. C.K. Boyce, M.A. Zwieniecki, G.D. Cody, C. Jacobsen, S. Wirick, A.H. Knoll, and N. M. Holbrook, "Evolution of xylem lignification and hydrogel transport regulation."  Proceedings of the National Academy of Sciences 101, 17555-17558 (2004).  [PDF logoPDF]
  32. J. Kirz, C. Jacobsen, and M. Howells, "Soft x-ray microscopes and their biological applications." Quarterly Reviews of Biophysics 28, 33-130 (1995).  [PDF logoPDF]

I maintain a public calendar using Microsoft Exchange at the Advanced Photon Source at Argonne National Lab. You can view the calendar here using a desktop computer.  Unfortunately Microscoft Exchange refuses to deliver web views of calendars to mobile devices.