Self-concentration and large-scale coherence in bacterial dynamics

Christopher Dombrowski, Luis Cisneros, Sunita Chatkaew, Raymond E. Goldstein, John O. Kessler

Research output: Contribution to journalArticlepeer-review

628 Scopus citations

Abstract

The collective effects in bacterial suspensions in which strong microscale mixing arises from self-concentration and large-scale dynamic coherence were described. Self-concentration arose from chemotactically generated accumulations of cells that encounter, then slide down a slanted meniscus, resulting in even higher concentrations. The consumption of dissolved oxygen by cells and its replenishment from the fluid-air interface sets the stage for bioconvection. The results show that in the concentrated regime the temporal evolution must include an advective component, the fluid velocity determined self-consistently with the density.

Original languageEnglish (US)
Article number098103
Pages (from-to)098103-1-098103-4
JournalPhysical Review Letters
Volume93
Issue number9
DOIs
StatePublished - Aug 27 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Self-concentration and large-scale coherence in bacterial dynamics'. Together they form a unique fingerprint.

Cite this