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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.17842 |
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| _version_ | 1866912134268452864 |
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| author | Jose, Ajesh Perez-Estay, Benjamin Bendori, Shira Omer Eldar, Avigdor Kearns, Daniel B. Ariel, Gil Beer, Avraham |
| author_facet | Jose, Ajesh Perez-Estay, Benjamin Bendori, Shira Omer Eldar, Avigdor Kearns, Daniel B. Ariel, Gil Beer, Avraham |
| contents | Bacterial swarming is a complex phenomenon in which thousands of self-propelled rod-shaped cells move coherently on surfaces, providing an excellent example of active matter. However, bacterial swarming is different from most studied examples of active systems because single isolated cells do not move, while clusters do. The biophysical aspects underlying this behavior are unclear. In this work we explore the case of low local cell densities, where single cells become temporarily immobile. We show that immobility is related to local depletion of liquid. In addition, it is also associated with the state of the flagella. Specifically, the flagellar bundles at (temporarily) liquid depleted regions are completely spread-out. Our results suggest that dry models of self-propelled agents, which only consider steric alignments and neglect hydrodynamic effects, are oversimplified and are not sufficient to describe swarming bacteria. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_17842 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Immobility of isolated swarmer cells due to local liquid depletion Jose, Ajesh Perez-Estay, Benjamin Bendori, Shira Omer Eldar, Avigdor Kearns, Daniel B. Ariel, Gil Beer, Avraham Soft Condensed Matter Biological Physics Bacterial swarming is a complex phenomenon in which thousands of self-propelled rod-shaped cells move coherently on surfaces, providing an excellent example of active matter. However, bacterial swarming is different from most studied examples of active systems because single isolated cells do not move, while clusters do. The biophysical aspects underlying this behavior are unclear. In this work we explore the case of low local cell densities, where single cells become temporarily immobile. We show that immobility is related to local depletion of liquid. In addition, it is also associated with the state of the flagella. Specifically, the flagellar bundles at (temporarily) liquid depleted regions are completely spread-out. Our results suggest that dry models of self-propelled agents, which only consider steric alignments and neglect hydrodynamic effects, are oversimplified and are not sufficient to describe swarming bacteria. |
| title | Immobility of isolated swarmer cells due to local liquid depletion |
| topic | Soft Condensed Matter Biological Physics |
| url | https://arxiv.org/abs/2411.17842 |