Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 17: SYMPOSIUM Driven Soft Matter II

CPP 17.1: Hauptvortrag

Dienstag, 26. Februar 2008, 14:00–14:30, C 130

Soft Matter under Flow — •Gerhard Gompper — Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany

The dynamics of soft matter systems – such as colloidal suspensions, polymer solutions, and suspensions of fluid vesicles or cells – is often dominated by the hydrodynamic behavior of the solvent. For example, the flow properties of blood in micro-vessels is determined by the rheological properties of the red blood cells, and polymers unfold, tumble and collapse in shear flow. Furthermore, microfluidic devices allow the manipulation of small amounts of suspensions of particles or cells.

Multi-particle collision dynamics (MPC), a particle-based off-lattice mesoscopic simulation techniques has been shown be able to bridge the large length- and time-scale gap between the atomic and the mesoscopic domain in soft matter systems, and to describe hydrodynamic interactions at low Reynolds numbers very well [1]. In particular, it has then be applied recently to study the dynamical behavior of fluid vesicles and model red blood cells both in shear and capillary flows [2].
[1] M. Ripoll, K. Mussawisade, R.G. Winkler and G. Gompper, Europhys. Lett. 68, 106 (2004); I.O. Götze, H. Noguchi, and G. Gompper, Phys. Rev. E 76, 046705 (2007).

[2] H. Noguchi and G. Gompper, Phys. Rev. Lett. 93, 258102 (2004); Proc. Natl. Acad. Sci. USA 102, 14159 (2005); Phys. Rev. Lett. 98, 128103 (2007).