Geometry-driven collective ordering of bacterial vortices

Kazusa Beppu, Ziane Izri, Jun Gohya, Kanta Eto, Masatoshi Ichikawa, Yusuke T. Maeda

研究成果: Contribution to journalArticle

17 引用 (Scopus)

抜粋

Controlling the phases of matter is a challenge that spans from condensed materials to biological systems. Here, by imposing a geometric boundary condition, we study the controlled collective motion of Escherichia coli bacteria. A circular microwell isolates a rectified vortex from disordered vortices masked in the bulk. For a doublet of microwells, two vortices emerge but their spinning directions show transition from parallel to anti-parallel. A Vicsek-like model for confined self-propelled particles gives the point where the two spinning patterns occur in equal probability and one geometric quantity governs the transition as seen in experiments. This mechanism shapes rich patterns including chiral configurations in a quadruplet of microwells, thus revealing a design principle of active vortices.

元の言語英語
ページ(範囲)5038-5043
ページ数6
ジャーナルSoft Matter
13
発行部数29
DOI
出版物ステータス出版済み - 1 1 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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    Beppu, K., Izri, Z., Gohya, J., Eto, K., Ichikawa, M., & Maeda, Y. T. (2017). Geometry-driven collective ordering of bacterial vortices. Soft Matter, 13(29), 5038-5043. https://doi.org/10.1039/c7sm00999b