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BP: Fachverband Biologische Physik

BP 4: Colloids and Complex Liquids I (joint CPP/DY/BP)

BP 4.11: Talk

Monday, March 16, 2015, 12:15–12:30, C 130

Transport of active particles in low-porosity structures — Frank Wirner¹, Christian Scholz¹, and •Clemens Bechinger^1,2 — ¹2. Physikalisches Institut, Universität Stuttgart, Germany — ²Max-Planck-Institut für Intelligente Systeme, Stuttgart, Germany

Transport of active bacteria in porous media is of importance in many different fields, ranging from bioremediation, groundwater contamination and enhanced oil recovery to blood perfusion inside the body. We study the motion of active particles in artificially created porous media by a semi-experimental approach. In porous media with low porosities the presence of stagnant parts can lead to a temporary trapping of active particles in such regions, which can vastly increase their retention times. We compare the distributions of retention times and the transport properties of active and purely Brownian particles.