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BP: Fachverband Biologische Physik
BP 8: Active Matter DY II (joint session DY/CPP/BP)
BP 8.8: Talk
Monday, March 12, 2018, 17:30–17:45, BH-N 243
Randomly shaped magnetic Micropropellers — •Felix Bachmann1, Agnese Codutti1,2, Klaas Bente1, and Damien Faivre1 — 1Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Science Park Golm — 2Max Planck Institute of Colloids and Interfaces, Department of Theory & Bio-Systems, Science Park Golm
Over the last decade many different actuation mechanisms for swimming at low Reynolds number have been suggested and implemented. Magnetic micropropellers are a promising example that combines re-mote and fuel-free actuation with precise control. Now, the realization of the envisioned, mostly medical application is the next step. Therefore, automation and additional control strategies have to be developed. In this regard, randomly shaped micropropellers offer the possibility to find and test new actuation schemes and the associated propeller shapes. We screen a pool of such randomly shaped magnetic micropropellers by applying different magnetic fields and record their swimming behavior by optical high speed microscopy, which additionally enables tomographic 3D-shape reconstructions of interesting propellers. This is the basis for their reproduction through micro- and nanofabrication and eventually facilitates the formulation of micropropeller design guidelines for special applications.