6533b839fe1ef96bd12a6638
RESEARCH PRODUCT
Hydrodynamic synchronization of pairs of puller type magnetotactic bacteria in a high frequency rotating magnetic field.
Mihails BelovsAndrejs CebersRudolfs Livanovicssubject
PhysicsPhysics::Biological PhysicsRotating magnetic fieldMagnetotactic bacteriaDynamics (mechanics)02 engineering and technologyGeneral ChemistryType (model theory)010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesQuantitative Biology::Cell Behavior0104 chemical sciencesMagnetic fieldQuantitative Biology::Subcellular ProcessesSynchronization (alternating current)DipoleChemical physics0210 nano-technologydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-24 | Soft matter |