Run-and-tumble particles with hydrodynamics: sedimentation, trapping, and upstream swimming.
Phys Rev Lett
; 104(25): 258101, 2010 Jun 25.
Article
em En
| MEDLINE
| ID: mdl-20867416
ABSTRACT
We simulate by lattice Boltzmann the nonequilibrium steady states of run-and-tumble particles (inspired by a minimal model of bacteria), interacting by far-field hydrodynamics, subject to confinement. Under gravity, hydrodynamic interactions barely perturb the steady state found without them, but for particles in a harmonic trap such a state is quite changed if the run length is larger than the confinement length a self-assembled pump is formed. Particles likewise confined in a narrow channel show a generic upstream flux in Poiseuille flow chiral swimming is not required.
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Base de dados:
MEDLINE
Assunto principal:
Bactérias
/
Fenômenos Fisiológicos Bacterianos
/
Modelos Biológicos
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article