Dresden 2017 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 25: Posters - Soft Particles, Microswimmers, Microfluidics

DY 25.14: Poster

Tuesday, March 21, 2017, 18:15–21:00, P3

Active microrheology of dense microswimmer suspensions — •Alexander Liluashvili¹ and Thomas Voigtmann^1,2 — ¹Deutsches Zentrum für Luft- und Raumfahrt (DLR), Köln, Germany — ²Heinrich-Heine-Universität, Düsseldorf, Germany

The dynamics of self-propelled particles like microswimmers in dense environments are studied using the mode coupling theory of the glass transition. The theory is developed to investigate the glassy dynamics of active suspensions out-of-equilibrium, violating the fluctuation-dissipation-theorem relations.

As starting point of mathematical calculations the Mori-Zwanzig equations with orientational degrees of freedom in two dimensions are used. The final equations for the density two-point function in the time domain are solved numerically for the full model including the orientational degrees of freedom, as well as the spatial fluctuations.