This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1039/D0SM00571A in citations.
Please use the identifier: http://hdl.handle.net/2128/25317 in citations.
Wall entrapment of peritrichous bacteria: a mesoscale hydrodynamics simulation study
Wall entrapment of peritrichous bacteria: a mesoscale hydrodynamics simulation study
Microswimmers such as E. coli bacteria accumulate and exhibit an intriguing dynamics near walls, governed by hydrodynamic and steric interactions. Insight into the underlying mechanisms and predominant interactions demand a detailed characterization of the entrapment process. We employ a mesoscale h...
| Personal Name(s): | Mousavi, Mahdiyeh |
|---|---|
| Gompper, Gerhard (Corresponding author) / Winkler, Roland G. (Corresponding author) | |
| Contributing Institute: |
Theorie der Weichen Materie und Biophysik; IAS-2 Theoretische Physik der Lebenden Materie; IBI-5 |
| Published in: | Soft matter, 16 (2020) 20, S. 4866 - 4875 |
| Imprint: |
London
Royal Soc. of Chemistry
2020
|
| DOI: |
10.1039/D0SM00571A |
| PubMed ID: |
32424390 |
| Document Type: |
Journal Article |
| Research Program: |
Physical Basis of Diseases |
| Link: |
Get full text Published on 2020-05-08. Available in OpenAccess from 2021-05-08. Published on 2020-05-08. Available in OpenAccess from 2021-05-08. Get full text |
| Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25317 in citations.
|
Microswimmers such as E. coli bacteria accumulate and exhibit an intriguing dynamics near walls, governed by hydrodynamic and steric interactions. Insight into the underlying mechanisms and predominant interactions demand a detailed characterization of the entrapment process. We employ a mesoscale hydrodynamics simulation approach to study entrapment of an E. coli-type cell at a no-slip wall. The cell is modeled by a spherocylindrical body with several explicit helical flagella. Three stages of the entrapment process can be distinguished: the approaching regime, where a cell swims toward a wall on a nearly straight trajectory; a scattering regime, where the cell touches the wall and reorients; and a surface-swimming regime. Our simulations show that steric interactions may dominate the entrapment process, yet, hydrodynamic interactions slow down the adsorption dynamics close to the boundary and imply a circular motion on the wall. The locomotion of the cell is characterized by a strong wobbling dynamics, with cells preferentially pointing toward the wall during surface swimming. |