Collective escape of chemotactic swimmers through microscopic ratchets

Guillaume Lambert, David Liao, Robert H. Austin

Research output: Contribution to journalArticle

66 Scopus citations

Abstract

We report on the emergence of spontaneously forming migrating bands of E.coli bacteria inside a microchannel containing microstructured ratchets. We show that a collection of bacteria is able to migrate against the funnel-shaped barriers by creating and maintaining a chemoattractant gradient. A transition between pure rectification and chemotaxis-driven collective motion is predicted from theoretical models, and is observed experimentally as the initial inoculation density is varied.

Original languageEnglish (US)
Article number168102
JournalPhysical review letters
Volume104
Issue number16
DOIs
StatePublished - Apr 22 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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