University of Utah Department of Physics 115 South  1400 East Salt Lake City Utah 84112 USA Manfred.Walter@utah.edu

Research Interests




Publications

• N. J. Borys, M. J. Walter, J. M. Lupton
  Intermittency in second-harmonic radiation from plasmonic hot spots on rough silver films
  Physical Review B 80, 161407 (R) (2009)
• M. J. Walter, J. M. Lupton
  Unraveling the inhomogeneously broadened absorption spectrum of conjugated polymers by single-molecule light-harvesting action spectroscopy
  Physical Review Letters 103, 167401 (2009)
• D. Chaudhuri, J. W. Galusha, M. J. Walter, N. J. Borys, M. H. Bartl, J. M. Lupton
  Toward subdiffraction transmission microscopy of diffuse materials with silver nanoparticle white-light beacons
  Nano Letters 9, 952 (2009)
  (see also press release "Beaming New Light on Life" and coverage in ScienceShots; German article on scienceticker.info)
• M. J. Walter, N. J. Borys, G. Gaefke, S. Höger, and J. M. Lupton
  Spatial anticorrelation between nonlinear white-light generation and single molecule surface-enhanced Raman scattering
  Journal of the American Chemical Society 130, 16830 (2008)
• M. J. Walter, N. J. Borys, K. J. van Schooten, and J. M. Lupton
  Light-harvesting action spectroscopy of single conjugated polymer nanowires
  Nano Letters 8, 3330 (2008)
• D. R. McCamey, H. A. Seipel, S. Y. Paik, M. J. Walter, N. J. Borys, J. M. Lupton and C. Boehme
  Spin Rabi flopping in the photocurrent of a polymer light-emitting diode
  Nature Materials 7, 723 (2008)
  (see also press release "Toward Plastic Spin Transistors" )
• M. J. Walter, J. M. Lupton, K. Becker, J. Feldmann, G. Gaefke, and S. Höger
  Simultaneous Raman and fluorescence spectroscopy of single conjugated polymer chains
  Physical Review Letters 98, 137401 (2007)
• M. Reufer, P. G. Lagoudakis, M. J. Walter, J. M. Lupton, J. Feldmann, and U. Scherf
  Evidence for temperature independent triplet diffusion in ladder type conjugated polymers
  Physical Review B 74, 241201 (R) (2006)
• M. Reufer, M. J. Walter, P. G. Lagoudakis, A. B. Hummel, J. S. Kolb, H. G. Roskos, U. Scherf, and J. M. Lupton
  Spin-conserving carrier recombination in conjugated polymers
  Nature Materials 4, 340 (2005)
  (see also newspaper article "Licht am Limit" published in the "Frankfurter Allgemeine Zeitung" on 06/01/2005, print run: 375,000)
• M. J. Walter, J. M. Lupton
  Energy transfer in single conjugated polymer chains
  in "Single particle tracking and single molecule energy transfer: applications in the bio and nano sciences"
  edited by C. Bräuchle, D. C. Lamb, J. Michaelis
  John Wiley & Sons Inc, Weinheim, in press, ISBN: 978-3-527-32296-1. Link
• M. J. Walter, J. M. Lupton
  Spin correlations in organic light-emitting diodes
   in "Highly efficient OLEDs with phosphorescent materials"
  edited by H. Yersin
  John Wiley & Sons Inc, Weinheim, 2007, ISBN: 978-3-527-40594-7.  Link   Link
• M. J. Walter, Light-harvesting in single conjugated polymer chains and semiconductor nanocrystals, Ph.D. thesis, University of Utah (2009).
• M. J. Walter, Spin correlations in polymeric semiconductors, diploma thesis, Ludwig-Maximilians-Universität Munich (2004).

Scholarships, Recognitions and Awards

07/2008	Scholarship by e-fellows.net
04/2007	Outstanding Graduate Student Award given by the Department of Physics, University of Utah
09/2005	Doctoral scholarship awarded by the Elite Network of Bavaria; member of the International Doctorate Program "Nano-Bio-Technology"
07/2005	First prize for the year`s best poster presentation within the category "Ph.D. dissertations" within the Physics Department, Ludwig-Maximilians-Universität Munich

Curriculum Vitae

09/2009	Ph.D. defense and thesis release: "Light-harvesting in single conjugated polymer chains and semiconductor nanocrystals"
09/2006 - 09/2009	Graduate Student in the Physics Department, University of Utah, in the group of Prof. John Lupton
01/2005 - 08/2006	Graduate Student in the Photonics and Optoelectronics Group (Department of Physics and Center for NanoScience, Ludwig-Maximilians-Universität Munich, chair of Prof. J. Feldmann) in the research group of Dr. John Lupton
11/1999 - 11/2004	Undergraduate and graduate studies at Ludwig-Maximilians-Universität Munich, Germany Degree: Diploma in physics ; final grade: 1.1 (very good) Thesis: "Spin correlations in polymeric semiconductors"
1998	Completion of high school education at  Wilhelm-Hausenstein-Gymnasium Munich with the general certificate for university entrance (Abitur) ; final grade: 1.0 (excellent)

Presentations

Talks

• M. J. Walter, N. J. Borys, J. M. Lupton
  Light-harvesting action spectroscopy of single conjugated polymer chains,
  237th National Meeting of the American Chemical Society,
  03/2009, Salt Lake City (USA)   Link
• M. J. Walter,
  Energy transfer in single polymer chains,
  Condensed Matter Seminar, Department of Physics, University of Utah,
  09/2008, Salt Lake City (USA)
  
• M. J. Walter, J. M. Lupton, K. Becker, J. Feldmann, G. Gaefke, and S. Höger,
  Simultaneous surface enhanced Raman and fluorescence spectroscopy of single conjugated polymer chains,
  2007 MRS Fall Meeting: Symposium "Excitons and Plasmon Resonances in Nanostructures",
  11/2007, Boston (USA)   Link
• M. J. Walter, J. M. Lupton, K. Becker, J. Feldmann, G. Gaefke, and S. Höger,
  Simultaneous single molecule Raman and fluorescence spectroscopy of conjugated polymers,
  ICP2007 - XXIII International Conference on Photochemistry,
  08/2007, Cologne (Germany)   Link
• M. J. Walter, N. J. Borys, and J. M. Lupton,
  Single molecule surface enhanced Raman spectroscopy of conjugated polymers,
  233th National Meeting of the American Chemical Society: Symposium "30 Years of Conducting Polymers",
  03/2007, Chicago (USA)   Link
• F. Schindler, J. M. Lupton, M. J. Walter, U. Scherf, and J. Feldmann,
  How single conjugated polymer molecules respond to electric fields,
  DPG (German Physical Society): Spring Meeting,
  03/2006, Dresden (Germany)   Link
• M. J. Walter,
  Spin statistics of OLEDs,
  Workshop Optoelectronics: From the Drawing Board to the Production Line,
  09/2005, Hirschegg (Austria)
• M. J. Walter, M. Reufer, P. G. Lagoudakis, A. B. Hummel, J. S Kolb, H. G. Roskos, U. Scherf, J. M. Lupton, and J. Feldmann,
  Spin-conserving carrier recombination in conjugated polymers,
  EUROMAT 2005,
  09/2005, Prague (Czech republic)   Link
• M. J. Walter, M. Reufer, P. G. Lagoudakis, F. Schindler, A. B. Hummel, J. S Kolb, H. G. Roskos, U. Scherf, J. M. Lupton, and J. Feldmann,
  Spin-conserving carrier recombination in conjugated polymers,
  The International Society for Optical Engineering (SPIE): Optics & Photonics 2005,
  08/2005, San Diego (USA)
• M. J. Walter, M. Reufer, P. G. Lagoudakis, A. B. Hummel, J. S Kolb, H. G. Roskos, U. Scherf, J. M. Lupton, and J. Feldmann,
  Spin-conserving carrier recombination in conjugated polymers,
  8th European Conference on Molecular Electronics (ECME8),
  07/2005, Bologna (Italy)   Link

Posters

• M. J. Walter, J. M. Lupton, K. Becker, J. Feldmann, G. Gaefke, and S. Höger,
  Simultaneous single molecule Raman and fluorescence spectroscopy of conjugated polymers,
  2007 MRS Spring Meeting,
  04/2007, San Francisco (USA)   Link
• M. J. Walter, M. Reufer, P. G. Lagoudakis, U. Scherf, J. M. Lupton, and J. Feldmann,
  Spin-conserving carrier recombination in conjugated polymers,
  CeNS Winterschool: From Quantum Bits to Life Science,
  02/2005, Mauterndorf (Austria)   Link
• M. J. Walter, M. Reufer, P. G. Lagoudakis, U. Scherf, J. M. Lupton, and J. Feldmann,
  Spin correlations in polymeric semiconductors,
  CeNS Workshop: Nanoscience - linking disciplines,
  09/2004, Venice (Italy)   Link