articleProceedings of the National Academy of SciencesJun 20, 2011BRONZE OA

Fluid dynamics and noise in bacterial cell–cell and cell–surface scattering

KDKnut DrescherJDJörn DunkelLCLuis CisnerosSGS. GangulyRERaymond E. Goldstein

University of Cambridge · University of Arizona

PubMed
Indexed inarxivcrossrefpubmed

Abstract

Bacterial processes ranging from gene expression to motility and biofilm formation are constantly challenged by internal and external noise. While the importance of stochastic fluctuations has been appreciated for chemotaxis, it is currently believed that deterministic long-range fluid dynamical effects govern cell-cell and cell-surface scattering-the elementary events that lead to swarming and collective swimming in active suspensions and to the formation of biofilms. Here, we report direct measurements of the bacterial flow field generated by individual swimming Escherichia coli both far from and near to a solid surface. These experiments allowed us to examine the relative importance of fluid dynamics and…

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Topics & keywords

Topics
Keywords
  • Scattering
  • Bacterial cell structure
  • Chemical physics
  • Biofilm
  • Chemotaxis
  • Bacteria
  • Biophysics
  • Motility
UN Sustainable Development Goals
  • Life below water
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