dorsal/arxiv
View SchemaSelf Trapping of a Single Bacterium in its Own Chemoattractant
| Authors | Yoav Tsori, Pierre-Gilles de Gennes |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0405005 |
| URL | https://arxiv.org/abs/q-bio/0405005 |
| DOI | 10.1209/epl/i2003-10237-5 |
| Journal | Europhys. Lett. 66, 599 (2004) |
Abstract
Bacteria (e.g. E. Coli) are very sensitive to certain chemoattractants (e.g. asparate) which they themselves produce. This leads to chemical instabilities in a uniform population. We discuss here the different case of a single bacterium, following the general scheme of Brenner, Levitov and Budrene. We show that in one and two dimensions (in a capillary or in a thin film) the bacterium can become self-trapped in its cloud of attractant. This should occur if a certain coupling constant $g$ is larger than unity. We then estimate the reduced diffusion D_eff of the bacterium in the strong coupling limit, and find D_eff ~ 1/g.
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"abstract": "Bacteria (e.g. E. Coli) are very sensitive to certain chemoattractants (e.g.\nasparate) which they themselves produce. This leads to chemical instabilities\nin a uniform population. We discuss here the different case of a single\nbacterium, following the general scheme of Brenner, Levitov and Budrene. We\nshow that in one and two dimensions (in a capillary or in a thin film) the\nbacterium can become self-trapped in its cloud of attractant. This should occur\nif a certain coupling constant $g$ is larger than unity. We then estimate the\nreduced diffusion D_eff of the bacterium in the strong coupling limit, and find\nD_eff ~ 1/g.",
"arxiv_id": "q-bio/0405005",
"authors": [
"Yoav Tsori",
"Pierre-Gilles de Gennes"
],
"categories": [
"q-bio.PE"
],
"doi": "10.1209/epl/i2003-10237-5",
"journal_ref": "Europhys. Lett. 66, 599 (2004)",
"title": "Self Trapping of a Single Bacterium in its Own Chemoattractant",
"url": "https://arxiv.org/abs/q-bio/0405005"
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