Collective motion and nonequilibrium cluster formation in colonies of gliding bacteria
We characterize cell motion in experiments and show that the transition to collective motion in colonies of gliding bacterial cells confined to a monolayer appears through the organization of cells into larger moving clusters. Collective motion by nonequilibrium cluster formation is detected for a c...
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| Veröffentlicht in: | Physical review letters 2012-02, Vol.108 (9), p.098102-098102, Article 098102 |
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| container_end_page | 098102 |
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| container_issue | 9 |
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| container_title | Physical review letters |
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| creator | Peruani, Fernando Starruss, Jörn Jakovljevic, Vladimir Søgaard-Andersen, Lotte Deutsch, Andreas Bär, Markus |
| description | We characterize cell motion in experiments and show that the transition to collective motion in colonies of gliding bacterial cells confined to a monolayer appears through the organization of cells into larger moving clusters. Collective motion by nonequilibrium cluster formation is detected for a critical cell packing fraction around 17%. This transition is characterized by a scale-free power-law cluster-size distribution, with an exponent 0.88±0.07, and the appearance of giant number fluctuations. Our findings are in quantitative agreement with simulations of self-propelled rods. This suggests that the interplay of self-propulsion and the rod shape of bacteria is sufficient to induce collective motion. |
| doi_str_mv | 10.1103/physrevlett.108.098102 |
| format | Article |
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| ispartof | Physical review letters, 2012-02, Vol.108 (9), p.098102-098102, Article 098102 |
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| language | eng |
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| source | MEDLINE; American Physical Society Journals |
| subjects | Biological Physics Cluster Analysis Colony Count, Microbial Movement - physiology Myxococcus - cytology Myxococcus - growth & development Physics |
| title | Collective motion and nonequilibrium cluster formation in colonies of gliding bacteria |
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