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RESEARCH PRODUCT

Diffusion of magnetotactic bacterium in rotating magnetic field

Andrejs Cebers

subject

PhysicsRotating magnetic fieldComputer simulationField (physics)Condensed Matter PhysicsCurvatureRandom walkQuantitative Biology::Cell BehaviorElectronic Optical and Magnetic MaterialsClassical mechanicsTrajectoryMagnetotactic bacteriumDiffusion (business)human activities

description

Swimming trajectory of a magnetotactic bacterium in a rotating magnetic field is a circle. Random reversals of the direction of the bacterium motion induces a random walk of the curvature center of the trajectory. In assumption of the distribution of the switching events according to the Poisson process the diffusion coefficient is calculated in dependence on the frequency of the rotating field and the characteristic time between the switching events. It is confirmed by the numerical simulation of the random walk of the bacterium in the rotating magnetic field.

yearjournalcountryeditionlanguage
2011-02-01Journal of Magnetism and Magnetic Materials
https://doi.org/10.1016/j.jmmm.2010.09.017