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Research focus:  

Lehrstuhl für Physikalische Chemie II
Am Hubland, 97074/Würzburg

Scientific members:


   Outside lecturer:

   Scientific assistants:

   Other participating persons and organisations:

Research foci (and basic equipment-based research projects):
Microparticles, i.e. small particles with diameters ranging from submicrometers to millimeters play a very important role in many processes taking place in our daily life. A very elegant way to study chemical or physical processes taking place in a single microdroplet is the optical levitation technique. Here the photon pressure of a laser is used to levitate the microparticle and the laser light is simultaneously used to perform the light scattering experiments. From the elastic scattering data (Mie scattering) one can deduce the radius as well as the refractive index of the microdroplet while the investigation of the inelastically scattered light (Raman scattering) provides information about the chemical composition of the investigated microdroplet.

For the results in this research area, please consult the above-mentioned publications.

Rewards and prizes:
Prof. Dr. W. Kiefer: Honorary Fellow of the Laser and Spectroscopy Society of India (F.L.S.S.), 1999. - Distinguished Service Award of the Society of Applied Spectroscopy, 2000. - Foreign Councillor of the Institute for Molecular Science, Okazaki National Research Institutes, Okazaki, Japan, 1999-2001. ? Technical Expert Monitor of the International Science and Technology Center, Moscow, Russia, 1999-2002. ? Chief Editor of the: Journal of Raman Spectroscopy, 2000. -- PD Dr. J. Popp: Zehetmaier Award (postdoctoral lecture qualification scholarship) awarded by the Freistaat Bayern, 1999. - Cooperation Prize of the University of Würzburg, 2001, - Bunsen-Kirchhoff Prize awarded by the German Bunsen-Society, 2002. -- Dr. Sebastian Schlücker: VCI Graduate Research Fellowship, 1999. - Mathias-Manger Award (Diploma) of the Faculty of Chemistry and Pharmacy, 1999. - Faculty Award (Dissertation) of the Faculty of Chemistry and Pharmacy, 2002. -- Dr. A. Gbureck: Faculty Award (Dissertation) of the Faculty of Chemistry and Pharmacy, 1999. -- Dr. O. Sbanski: Faculty Award (Dissertation) of the Faculty of Chemistry and Pharmacy, 2002.

Micro Raman set up incl. confocal pinhole (LabRam JobinYvon): HeNe-Laser, 785 diode laser, Ar ion laser (514 nm) and cw Nd:YAG laser / accessories; Raman spectrometer incl. microscope: Ar ion laser / XY triple monochromator (DILOR) / OMA detector; Universal non linear Raman set up: nanosecond Nd:YAG laser pumped dye laser system / Spex 1404 double monochromator / CCD camera; multi colour femtosecond laser system (repetition rate 100 kHz, Coherent): Acton SpectraPro monochromator / CCD camera / accessories.