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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Nanoscale Processes - Time-resolved X-ray scattering

Nanoscale processes and growth - Time-resolved X-ray scattering

Contact:

new contact details:

Bundesanstalt für Materialforschung und –prüfung (BAM)
Prof. Dr. phil. Stefan Kowarik

8.6 Fibre Optic Sensors
Unter den Eichen 44 - 46
12203 Berlin
GERMANY
P: + 49 30 8104-4817

F: +49 30 8104-3047
stefan.kowarik @ bam.de
 

contact details at HU Berlin:

Prof. Dr. Stefan Kowarik

Institut für Physik

Humboldt-Universität zu Berlin

Newtonstr. 15

D-12489 Berlin, Germany

 

office: +49 (0)30 2093 4818

fax: +49 (0)30 2093 7760

e-mail: stefan.kowarik@physik.hu-berlin.de

room: 2-518

 

Stefan Kowarik, short CV:
- Physik Diplom, LMU München (2002)

- PhD, Oxford University (2003-2006)

- Postdoc: Univ. Tübingen, Cornell Univ. (2007), UC Berkeley (2008 - 2009)

- HU Berlin (since Dec 2009)

 

 

 

 

Our group (headed by Prof. Dr. Stefan Kowarik) unravels nanoscale processes by measuring atomic or molecular kinetics with time-resolved X-ray scattering and optical methods. We study the non-equilibrium dynamics of self-assembly, growth and phase transitions, investigate ways to control and tailor nanostructure formation, and explore the nanoscale movements in switchable molecules. To this end we advance X-ray techniques towards ultimate spatial, (continuous) temporal resolution and maximum sensitivity and information content. An understanding of these atomic scale processes will lead to optimized smart materials, molecular optoelectronic devices, and (bio-)sensors. We offer interested students countless opportunities to take part in exciting projects.

 

GIXD_Movie 
Evolution of an x-ray diffraction pattern during molecular self-assembly

 

 

Recent publication highlights:
  • L. Pithan, P. Beyer, L. Bogula, A. Zykov, P. Schäfer, J. Rawle, C. Nicklin, A. Opitz, and S. Kowarik, "Direct Photoalignment and Optical Patterning of Molecular Thin Films", Advanced Materials, 29, 1521 (2017).

  • C. Weber, T. Liebig, M. Gensler, A. Zykov, L. Pithan, J. P. Rabe, S. Hecht, D. Bléger and S. Kowarik, "Cooperative Switching in Nanofibers of Azobenzene Oligomers", Scientific Reports, 6, 25605 (2016). 

  • S. Bommel, N. Kleppmann, C. Weber, H. Spranger, P. Schäfer, J. Novak, S.V. Roth, F. Schreiber, S.H.L. Klapp, S. Kowarik, “Unravelling the multilayer growth of the fullerene C60 in real-time” 
    Nature Communications, 5, 5388 (2014).

 

Congratulations to Laura Bogula who won a PGzB & Siemens AG prize for her studies and master thesis in our group.