kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Stochastic reorientations and the hydrodynamics of microswimmers near deformable interfaces
Nordita, SU; Present address: Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India; snambiar@iitd.ac.in.
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Departments of Earth & Planetary Sciences, Mathematics and Physics, Yale University, New Haven, Connecticut 06520-8109, USA.ORCID iD: 0000-0002-1676-9645
2024 (English)In: Physical Review Fluids, E-ISSN 2469-990X, Vol. 9, no 2, article id 023102Article in journal (Refereed) Published
Abstract [en]

We study the hydrodynamic interaction between a microswimmer and a deformable interface when the swimmer can stochastically reorient itself. We consider a force- and torque-free swimmer, modeled as a slender body, that can execute random orientation tumbles or active Brownian rotations in the plane of the deformable interface. When the swimmer is in the more viscous fluid, our analysis shows that both tumbles and Brownian rotations acting on timescales comparable to that of interface deformations can lead to a pusher-type swimmer rotating away from the interface, while enhancing its attraction towards the interface. In turn, the intrinsic orientational stochasticity of the microswimmer favors a stronger migration of pushers towards the interface at short times, but migration away from the interface in the long-time limit. However, irrespective of the viscosity ratio of the two fluid medium, the tendency of a pusher to align parallel to the interface is suppressed; the results for puller-type swimmers are the opposite. Our study has potential consequences for the residence time of swimming microorganisms near deformable boundaries.

Place, publisher, year, edition, pages
American Physical Society (APS) , 2024. Vol. 9, no 2, article id 023102
National Category
Computational Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-344182DOI: 10.1103/PhysRevFluids.9.023102ISI: 001170883900001Scopus ID: 2-s2.0-85185712200OAI: oai:DiVA.org:kth-344182DiVA, id: diva2:1842902
Note

QC 20240318

Available from: 2024-03-06 Created: 2024-03-06 Last updated: 2024-03-18Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Wettlaufer, John

Search in DiVA

By author/editor
Wettlaufer, John
By organisation
Nordic Institute for Theoretical Physics NORDITA
In the same journal
Physical Review Fluids
Computational Mathematics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 5 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf