Jörg Kärger

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Jörg Kärger in the lecture hall building of the University of Leipzig (2019)

Jörg Kärger (born October 3, 1943 in Erfurt ) is a German physicist .

Live and act

After attending school in Erfurt and Leipzig , Kärger studied physics at the University of Leipzig , of which he remained a member of the period that followed, interrupted by guest stays in Prague , Leningrad , Moscow , Paris and Fredericton / Canada . The doctorate in 1970 with the dissertation “The diffusion of water on 13X zeolites: investigated according to the method of nuclear magnetic resonance with the help of pulsed field gradients” with Harry Pfeifer was followed in 1978 by the doctorate B (1991 with conversion to habilitation ) as well as the appointment to an extraordinary professorship 1989 and a full professorship for experimental physics / interface physics in 1994.

His work on the use of NMR spectroscopy to measure the diffusion of molecules in nanoporous materials ( zeolites ) , which he began as part of his doctorate, was decisive for his scientific career . Existing ideas had to be corrected by orders of magnitude after his measurements, which led to a paradigm shift in understanding the molecular transport of substances in such systems. The two-range diffusion mechanism he used has become a widely used model for NMR diffusion measurements in complex systems, right through to their use for magnetic resonance imaging . His monographs Diffusion in Zeolites and Other Microporous Solids (Wiley, 1992, together with DM Ruthven) and Diffusion in Nanoporous Materials (together with DM Ruthven and DN Theodorou) became standard works in sorption research , i.e. H. in the study of the behavior of molecules in interaction with interfaces . His work was recognized by the award of the Gustav Hertz Prize of the Physical Society of the GDR (1978, together with Harry Pfeifer) and the Breck Prize of the International Zeolite Association (1986, together with Harry Pfeifer, Dieter Freude and Martin Bülow) and the Max Planck Research Award (1993, together with Douglas M. Ruthven). He is the author of over 500 publications in periodicals , author / editor of 10 books and recognized as the world's most prolific researcher in the field of molecular diffusion.

Together with Paul Heitjans , he initiated the Diffusion Fundamentals conference series, which is dedicated to the phenomena of random movement and expansion in their entirety. The objects observed can thus be of a material or immaterial nature and range from atoms and molecules as the traditional objects of diffusion research to new species in the animal and plant world and new words in our vocabulary. Since the 6th conference in 2015 in Dresden, the conference series with the accompanying Diffusion Fundamentals online journal has been under the leadership of the Saxon Academy of Sciences in Leipzig .

The result of the Dresden conference was the book “Diffusive Spreading in Nature, Technology and Society”, for which he and Armin Bunde , Jürgen Caro and Gero Vogl were awarded its literature prize in 2019 by the Fonds der Chemischen Industrie .

In 2005, Kärger was honored with the Theodor Litt Prize of the University of Leipzig for his services to teaching . He achieved particular media effectiveness at his Sunday lectures at the Faculty of Physics and Geosciences with up to 500 listeners, in one of which the world's largest bicycle bell orchestra was formed for entry in the Guinness Book of Records through the “Physics of the Bicycle” by the lecture visitors with coordinated bicycle bells .

Jörg Kärger has been with the dentist Birge Kärger, born in 1971. Cook, married. The marriage resulted in four children (Sebastian 1976, Wieland and Luise 1978 and Philipp 1981).

Functions and memberships

  • 1996 to 1999 Dean of the Faculty of Physics and Geosciences at the University of Leipzig,
  • 1995 to 1998 Chairman of the DECHEMA specialist group "Zeolites",
  • 2002 to 2006 ombudsman of the University of Leipzig
  • 2007 to 2010 member of the board of directors of the Center for Magnetic Resonance at the University of Leipzig.
  • since 2000 member of the Saxon Academy of Sciences in Leipzig (chairman of the structure committee “Propagation in Nature, Technology and Society”).
  • since 2018 head of the IUPAC working group "Diffusion in Nanoporous Solids".
  • since 2003 member of the Protestant Research Academy .
  • 1991 founding member of the support group of the Leipzig University Choir (deputy chairman from 1991 to 2014)

Fonts (selection)

Books
  • Jörg Kärger, Douglas Morris Ruthven: Diffusion in Zeolites and Other Microporous Solids . John Wiley, New York, USA (1992), ISBN 978-0-471-50907-3
  • Paul Heitjans , Jörg Kärger (Eds.): Diffusion in Condensed Matter: Methods, Materials, Models . Springer, Berlin Heidelberg 2005, ISBN 978-3-540-72081-2
  • Jörg Kärger (Ed.): Leipzig, Einstein, Diffusion . Leipziger Universitätsverlag, Leipzig, 2007, (3rd edition 2014), ISBN 978-3-86583-176-7
  • Jörg Kärger, Douglas Morris Ruthven, Doros N. Theodorou: Diffusion in Nanoporous Materials , Wiley-VCH, Weinheim 2012, ISBN 978-3-527-31024-1
  • Armin Bunde, Jürgen Caro, Jörg Kärger, Gero Vogl (Eds.): Diffusive Spreading in Nature, Technology and Society . Springer International Publishing, Cham, 2018, ISBN 978-3-31967-797-2
Publications in periodicals
  • J. Kärger: For the determination of diffusion in a two-range system with the help of pulsed field gradients , Ann. Physik 7/24 (1969) 1-4
  • J. Kärger, J. Caro: Interpretation and Correlation of Zeolitic Diffusivities Obtained from Nuclear Magnetic Resonance and Sorption Experiments , J. Chem. Soc. Faraday I, 73 (1977) 1363-1376
  • W. Heink, J. Kärger, H. Pfeifer: Application of Zeugmatography to Study Kinetics of Physical Adsorption , Chem. Engin. Sci. 33 (1978) 1019-1023
  • J. Kärger, W. Heink: The Propagator Representation of Molecular Transport in Microporous Crystallites , J. Magn. Res. 51 (1983) 1-7
  • V. Kukla, J. Kornatowski, D. Demuth, I. Girnus, H. Pfeifer, LVC Rees, S. Schunk, KK Unger, J. Kärger, NMR Studies of Single-File Diffusion in Unidimensional Channel Zeolites , Science 272 (1996 ) 702-704.
  • R. Valiullin, S. Naumov, P. Galvosas, J. Kärger, H.-J. Woo, F. Porcheron, PA Monson: Exploration of Molecular Dynamics during Transient Sorption of Fluids in Mesoporous Materials , Nature 443 (2006) 965-968.
  • Feil, F .; Naumov, S .; Michaelis, J .; Valiullin, R .; Enke, D .; Kärger, J .; Bräuchle, C .: Single-Particle and Ensemble Diffusivities − Test of Ergodicity . Angew. Chem., Intern. Edit. 51 (2012) 1152-1155
  • J. Kärger, T. Binder, C. Chmelik, F. Hibbe, H. Krautscheid, R. Krishna, and J. Weitkamp, Microimaging of Transient Guest Profiles to Monitor Mass Transfer in Nanoporous Materials , Nature Mater. 13 (2014) 333-343.
  • C. Chmelik, M. Liebau, M. Al-Naji, J. Möllmer, D. Enke, R. glasses, J. Kärger, One-Shot Measurement of Effectiveness Factors of Chemical Conversion in Porous Catalysts ChemCatChem 10 (2018) 5602– 5609

literature

Web links

Commons : Jörg Kärger  - Collection of Images

Individual evidence

  1. ↑ a b see under books
  2. ↑ Luis Obregon Quiñones, Jorge Duarte Forero, Guillermo Valencia Ochoa: Global Trends in Molecular Diffusion Research from 2001 to 2017: A Bibliometric Analysis. In: Contemporary Engineering Sciences, Vol. 11, 2018, no.75.Retrieved October 31, 2019 .
  3. ^ Diffusion Fundamentals Conferences. Retrieved March 18, 2019 .
  4. ^ Diffusion Fundamentals. Retrieved March 18, 2019 .
  5. ↑ Literature Prize of the Chemical Industry 2019 for the book "Diffusive Spreading in Nature, Technology and Society". Retrieved September 13, 2019 .
  6. ^ Theodor Litt Prize. Retrieved March 29, 2019 .
  7. ^ The physics of the bicycle - bell concert for the Guinness book. In: idw - Informationsdienst Wissenschaft , November 18, 2003. Accessed March 30, 2019 .
  8. ↑ Magnetic Resonance Center. Retrieved March 29, 2019 .
  9. ↑ Spread in nature, technology and society. In: SAW website. Retrieved March 29, 2019 .
  10. ↑ Diffusion in Nanoporous Solids. In: IUPAC website. Retrieved March 29, 2019 .
personal data
SURNAME Kärger, Jörg
BRIEF DESCRIPTION German physicist
DATE OF BIRTH October 3, 1943
PLACE OF BIRTH Erfurt