Active colloids under geometrical constraints in viscoelastic media.
Journal
The European physical journal. E, Soft matter
ISSN: 1292-895X
Titre abrégé: Eur Phys J E Soft Matter
Pays: France
ID NLM: 101126530
Informations de publication
Date de publication:
11 Mar 2021
11 Mar 2021
Historique:
received:
16
10
2020
accepted:
29
01
2021
entrez:
11
3
2021
pubmed:
12
3
2021
medline:
12
3
2021
Statut:
epublish
Résumé
We study the behavior of active particles (APs) moving in a viscoelastic fluid in the presence of geometrical confinements. Upon approaching a flat wall, we find that APs slow down due to compression of the enclosed viscoelastic fluid. In addition, they receive a viscoelastic torque leading to sudden orientational changes and departure from walls. Based on these observations, we develop a numerical model which can also be applied to other geometries and yields good agreement with experimental data. Our results demonstrate, that APs are able to move through complex geometrical structures more effectively when suspended in a viscoelastic compared to a Newtonian fluid.
Identifiants
pubmed: 33704591
doi: 10.1140/epje/s10189-021-00033-w
pii: 10.1140/epje/s10189-021-00033-w
pmc: PMC7952293
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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