6533b7d0fe1ef96bd125b041
RESEARCH PRODUCT
Hydrodynamics with spin in bacterial suspensions
M. BelovsAndrejs Cēberssubject
Surface (mathematics)HelicobacteraceaeFOS: Physical sciencesCondensed Matter - Soft Condensed MatterThiovulum majusFlagellumBacterial Physiological PhenomenaModels Biological01 natural sciencesQuantitative Biology::Cell Behavior010305 fluids & plasmasQuantitative Biology::Subcellular ProcessesSuspensionsOrientation (geometry)0103 physical sciencesTorque010306 general physicsSpin-½PhysicsPhysics::Biological Physicsbiologybiology.organism_classificationAction (physics)Classical mechanicsFlagellaHydrodynamicsSoft Condensed Matter (cond-mat.soft)Vector fielddescription
We describe a new kind of self-propelling motion of bacteria based on the cooperative action of rotating flagella on the surface of bacteria. Describing the ensemble of rotating flagella in the framework of the hydrodynamics with spin the reciprocal theorem of Stokesian hydrodynamics is generalized accordingly. The velocity of the self-propulsion is expressed in terms of the characteristics of the vector field of flagella orientation and it is shown that unusually high velocities of \textit{Thiovulum majus} bacteria may be explained by the cooperative action of the rotating flagella. The expressions obtained enable us to estimate the torque created by the rotary motors of the bacterium and show quantitative agreement with the existing experimental data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-03-24 | Physical Review E |