Tutorial I: Introduction into Magnetomotion
Klaas Bente, German Federal Institute for Materials Research and Testing (BAM), Germany
Many motile microorganisms swim and navigate in chemically and mechanically complex environments, such as the human vascular system. These organisms can be functionalized and directly used for applications (biohybrid approach), but also inspire designs for fully synthetic microbots. The most promising designs of biohybrids and bioinspired microswimmers include one or several magnetic components, which lead to sustainable propulsion mechanisms and external controllability. This tutorial addresses such magnetic microswimmers, which are often studied in view of certain applications, mostly in the biomedical field. First, propulsion systems at the microscale are reviewed and the magnetism of microswimmers is introduced. The presentation of state-of-the-art magnetic biohybrids and bioinspired microswimmers is structured gradually from mostly biological systems toward purely synthetic approaches. Finally, currently less explored aspects of this field ranging from in vivo imaging to swarm control are discussed.
Klaas Bente studied Medical Engineering Science and did his PhD on real-time field-free line MPI at the Institute of Medical Engineering at the University of Lübeck, Germany, in 2016. Thereafter, he worked as a postdoc at the Max Planck Institute of Colloids and Interfaces in Potsdam, Germany, focusing on magnetic microswimmer imaging. He now works as a scientist on ultrasound imaging at the German Federal Institute for Materials Research and Testing (Bundesanstalt für Materialforschung und -prüfung, BAM), Berlin, Germany.
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