Dynamic clustering in suspension of motile bacteria

Bacteria suspension exhibits a wide range of collective phenomena, arising from interactions between individual cells. Here we show Serratia marcescens cells near an air-liquid interface spontaneously aggregate into dynamic clusters through surface-mediated hydrodynamic interactions. These long-lived clusters translate randomly and rotate in the counterclockwise direction; they continuously evolve, merge with others and split into smaller ones. Measurements indicate that long-ranged hydrodynamic interactions have strong influences on cluster properties. Bacterial clusters change material and fluid transport near the interface and hence may have environmental and biological consequences.

• Publication year

  2015

• Venue

  Europhysics Letters

• Publication date

  2015-03-03

• Fields of study

  Biology, Physics, Chemistry, Environmental Science

• Identifiers
  DOI 10.1209/0295-5075/111/54002arXiv 1504.04089
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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