Motion of magnetotactic bacteria swarms in an external field

Bente, Klaas; Kitenbergs, G.; Kriman, D.; Erglis, K.; Belovs, M.; Faivre, Damien; Cebers, A.

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Motion of magnetotactic bacteria swarms in an external field

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Bente, Klaas
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Faivre, Damien
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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1707.02827.pdf
(プレプリント), 1005KB

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引用

Bente, K., Kitenbergs, G., Kriman, D., Erglis, K., Belovs, M., Faivre, D., & Cebers, A.(2017). Motion of magnetotactic bacteria swarms in an external field.

引用: https://hdl.handle.net/11858/00-001M-0000-002E-1973-9

要旨

Magnetotactic bacteria moving on circular orbits form hydrodynamically bound
states. When close to a surface and with the tilting of the field in a
direction close to the perpendicular to this surface these swarms move
perpendicularly to the tilting angle. We describe quantitatively this motion by
a continuum model with couple stress arising from the torques produced by the
rotary motors of the amphitrichous magnetotactic bacteria. The model not only
correctly describes the change of direction of swarm motion while inverting the
tangential field but also predicts reasonable value of the torque produced by
the rotary motors.