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IRTG / Soft Matter Science
Freiburger Materialforschungszentrum
Stefan-Meier-Str. 21
79104 Freiburg, Germany


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You are here: Home Events Prof. Hartmut Löwen "Active Soft Matter Systems"

Prof. Hartmut Löwen "Active Soft Matter Systems"

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Theoretical Physics II: Soft Matter, University of Düsseldorf, Germany

  • Seminar
When Jun 24, 2015
from 02:15 PM to 03:00 PM
Where Seminarraum A, FMF, Stefan-Meier-Str. 21, Freiburg
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Ordinary materials are "passive" in the sense that their constituents are typically made by inert particles which are subjected to thermal fluctuations, internal interactions and external fields but do not move on their own. Living systems, like schools of fish, swarms of birds, pedestrians and swimming microbes are called "active matter" since they are composed of self-propelled constituents. Active matter is intrinsically in nonequilibrium and exhibits a plethora of novel phenomena as revealed by a recent combined effort of statistical theory, hydrodynamics and real-space experiments. The talk  provides an introduction into the statistical physics of active matter focussing on biological and artificial microswimmers as key examples of active soft matter. A number of single-particle and collective phenomena in active matter will be addressed. In detail, we shall discuss turbulent states [1] and their ability to steer the transport of shuttles [2] as well as kinetic phase separation in active systems [3,4], and the gravitaxis of microswimmers [5].

[1] H. H. Wensink, J. Dunkel, S. Heidenreich, K. Drescher,  R. E. Goldstein,  H. Lowen, J. M. Yeomans,   PNAS  109, 14308  (2012).
[2] A. Kaiser, A. Peshkow, A. Sokolov, B. ten Hagen, H. Lowen, I. S. Aranson,  Physical Review Letters 112, 158101  (2014).
[3] I. Buttinoni, J. Bialke, F. Kummel, H. Lowen, C. Bechinger, T. Speck, Physical Review Letters  110, 238301  (2013).
[4] T. Speck, J. Bialk\'e, A. M. Menzel, H. Lowen,  Physical Review Letters  112, 218304  (2014).
[5] B. ten Hagen, F. Kummel, R. Wittkowski,  H. Lowen, C. Bechinger,  Nature Communications 5, 4829  (2014).


invited by Dr. Maxim Dolgushev

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