Hydrodynamic synchronization of pairs of puller type magnetotactic bacteria in a high frequency rotating magnetic field
| Autor: | Mihails Belovs, Andrejs Cebers, Rudolfs Livanovics |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Physics::Biological Physics Rotating magnetic field Magnetotactic bacteria Dynamics (mechanics) 02 engineering and technology General Chemistry Type (model theory) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Quantitative Biology::Cell Behavior 0104 chemical sciences Magnetic field Quantitative Biology::Subcellular Processes Synchronization (alternating current) Dipole Chemical physics 0210 nano-technology |
| Zdroj: | Soft matter. 15(7) |
| ISSN: | 1744-6848 |
| Popis: | Ensembles of magnetotactic bacteria are known to interact hydrodynamically and form swarms under the influence of external magnetic fields. We describe the synchronization of puller type magnetotactic bacteria in a rotating magnetic field by representing the bacteria as hydrodynamic force dipoles. Numerical simulations show that at moderate values of the hydrodynamic interaction parameter large ensembles of asynchronously rotating bacteria randomly eject propagating doublets of synchronized bacteria. We quantitatively analyze the dynamics of the doublets and show that an important role in the formation of these propagating structures is played by the parameters characterizing the possible trajectories of a single bacterium in a rotating magnetic field. |
| Databáze: | OpenAIRE |
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