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001     877302
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024 7 _ |a 10.1039/D0SM00571A
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024 7 _ |a 1744-6848
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100 1 _ |a Mousavi, Mahdiyeh
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245 _ _ |a Wall entrapment of peritrichous bacteria: a mesoscale hydrodynamics simulation study
260 _ _ |a London
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520 _ _ |a 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.
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700 1 _ |a Gompper, Gerhard
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700 1 _ |a Winkler, Roland G.
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773 _ _ |a 10.1039/D0SM00571A
|g Vol. 16, no. 20, p. 4866 - 4875
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856 4 _ |u https://juser.fz-juelich.de/record/877302/files/mousavi_gompper_winkler_sm_16.4866.2020-1.pdf
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856 4 _ |y Published on 2020-05-08. Available in OpenAccess from 2021-05-08.
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