Hydrodynamic interactions of active particles near surfaces

The presence of microorganisms near surfaces is a ubiquitous phenomenon in biological systems. A surface at a finite distance from active particles alters the dynamics of individual particles as well as the hydrodynamic interactions of particles due to the flows generated by each particle. In this talk, we discuss an 'active' Stokesian Dynamics approach to study the hydrodynamic interactions of suspensions of active particles near surfaces and illustrate both far-field and near-field effects on the trajectories of particles with a few simple examples. The developed method can help to establish the relationship between hydrodynamics and biological phenomena, such as biofilm formation.