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B4: Control of flow patterns in complex fluids on the micron scale
Prof. Dr. Holger Stark 
Soft materials or complex fluids show a rich and fascinating variety of flow phenomena in non-equilibrium. The project uses computer simulations to explore control strategies such as hysteretic and time-delayed feedback to manipulate complex fluids, engineer their self-assembly, and design novel motional flow patterns. In the first subproject we investigate timely aspects of inertial microfluidics, which is of high relevance for biomedical applications. In the second subproject we concentrate on viscoelastic, shear-thinning, and active fluids and use feedback control to design their flow. Our work treats model systems for complex flow occuring in nature and it is relevant for fluid mixing in microfluidics and for microrheology.