Dresden 2020 – scientific programme
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BP: Fachverband Biologische Physik
BP 16: Poster IV
BP 16.19: Poster
Tuesday, March 17, 2020, 14:00–16:00, P2/EG
Self-assembly of magnetic cubic nanomotors — •Martin Kaiser1, Sofia Kantorovich1,3, Yeimy Martinez2, and Annette Schmidt2 — 1Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria — 2Chemistry Department, University of Cologne, D-50939 Cologne, Germany — 3Ural Federal University, Lenin Av. 51, Ekaterinburg 620000, Russian Federation
Microscopic active particles, including self-propelled cells, microorganisms and artificial swimming colloids, have gained a lot of attention due to their relevance in such important fields as biology, biomedicine, nanoscience and nanotechnology. The term "active" is usually used in order to underline the ability of particles or units to gain the kinetic energy and move by converting the energy from their environment.
In this study, we use active matter to create a new type of nanomotor, based on active particle propulsion, that can be oriented by an applied magnetic field. Such a nanomotor consists of two units: one is a magnetic cube that can be directed due to its interaction with a magnetic field, whereas a second non-magnetic active particle with a propulsion force directed into the cubes centre of mass.
In the present contribution, we discuss the self-assembly of the aforementioned magnetic nanomotors, employing the combination of Molecular Dynamics Simulations and experiments. Due to competing propulsion and magnetic forces we observe striking differences in cluster size distribution and topology if compared to the self-assembly of non-active magnetic cubes.