تقرير
Geometry-driven collective ordering of bacterial vortices
| العنوان: | Geometry-driven collective ordering of bacterial vortices |
|---|---|
| المؤلفون: | Beppu, Kazusa, Izri, Ziane, Gohya, Jun, Eto, Kanta, Ichikawa, Masatoshi, Maeda, Yusuke T. |
| المصدر: | Soft Matter 13, 5038-5043 (2017) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter, Condensed Matter - Statistical Mechanics |
| الوصف: | 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 controlled collective motion of Escherichia coli bacteria. A circular microwell isolates a rectified vortex from disordered vortices masked in 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 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. Comment: 5 pages, 5 figures. Supplemental materials: 3 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1039/c7sm00999b |
| URL الوصول: | http://arxiv.org/abs/1705.02136 |
| رقم الأكسشن: | edsarx.1705.02136 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1039/c7sm00999b |
|---|