6533b7ddfe1ef96bd1274993
RESEARCH PRODUCT
Diffusion in active magnetic colloids
Andrejs CebersR. Taukulissubject
PhysicsRotating magnetic fieldMagnetotactic bacteriaStatistical Mechanics (cond-mat.stat-mech)Direct numerical simulationFOS: Physical sciencesCondensed Matter - Soft Condensed MatterCondensed Matter PhysicsRotation01 natural sciences6. Clean waterAction (physics)010305 fluids & plasmasElectronic Optical and Magnetic MaterialsQuantitative Biology::Cell BehaviorQuantitative Biology::Subcellular ProcessesClassical mechanics0103 physical sciencesMaster equationTrajectorySoft Condensed Matter (cond-mat.soft)Diffusion (business)010306 general physicsCondensed Matter - Statistical Mechanicsdescription
Abstract Properties of active colloids of circle swimmers are reviewed. As a particular example of active magnetic colloids the magnetotactic bacteria under the action of a rotating magnetic field is considered. The relation for a diffusion coefficient due to the random switching of the direction of rotation of their rotary motors is derived on the basis of the master equation. The obtained relation is confirmed by the direct numerical simulation of random trajectory of a magnetotactic bacterium under the action of the Poisson type internal noise due to the random switching of rotary motors. The results obtained are in qualitative and quantitative agreement with the available experimental results and allow one to determine the characteristic time between the switching events of a rotary motor of the bacterium.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-04 | Journal of Magnetism and Magnetic Materials |