Regimes of motion of magnetocapillary swimmers
| Autor: | Oleg Trosman, Sebastian Ziegler, Ana-Sunčana Smith, Alexander Sukhov, Maxime Hubert, Jens Harting, Galien Grosjean, Ylona Collard, Nicolas Vandewalle |
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| Přispěvatelé: | Applied Physics and Science Education |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Biophysics Lattice Boltzmann methods FOS: Physical sciences Motion (geometry) Condensed Matter - Soft Condensed Matter Surface tension ddc:530 General Materials Science triangular magnetocapillary swimmer motion regimes Physics Physics::Biological Physics Magnetic moment Dynamics (mechanics) Fluid Dynamics (physics.flu-dyn) Physics - Fluid Dynamics Surfaces and Interfaces General Chemistry Mechanics Condensed Matter Physics Soft Condensed Matter (cond-mat.soft) Particle Constant (mathematics) Biophysics and Medical Physics Regular Article - Living Systems Biotechnology |
| Zdroj: | The European Physical Journal. E, Soft Matter European Physical Journal E: Soft Matter and Biological Physics The European physical journal / E 44(4), 59 (2021). doi:10.1140/epje/s10189-021-00065-2 European Physical Journal E, 44(4):59. Springer |
| ISSN: | 1292-895X 1292-8941 |
| DOI: | 10.1140/epje/s10189-021-00065-2 |
| Popis: | The dynamics of a triangular magnetocapillary swimmer is studied using the lattice Boltzmann method. Performing extensive numerical simulations taking into account the coupled dynamics of the fluid-fluid interface and of magnetic particles floating on it and driven by external magnetic fields we identify several regimes of the swimmer motion. In the regime of high frequencies the swimmer's maximum velocity is centered around the particle's inverse coasting time. Modifying the ratio of surface tension and magnetic forces allows to study the swimmer propagation in the regime of significantly lower frequencies mainly defined by the strength of the magnetocapillary potential. Finally, introducing a constant magnetic contribution in each of the particles in addition to their magnetic moment induced by external fields leads to another regime characterised by strong in-plane swimmer reorientations that resemble experimental observations. Comment: 12 pages, 12 figures |
| Databáze: | OpenAIRE |
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