Hydrodynamics Defines the Stable Swimming Direction of Spherical Squirmers in a Nematic Liquid Crystal

Abstract : We present a study of the hydrodynamics of an active particle, a model squirmer, in an envi- ronment with a broken rotational symmetry: a nematic liquid crystal. By combining simulations with analytic calculations, we show that the hydrodynamic coupling between the squirmer flow field and liquid crystalline director can lead to re-orientation of the swimmers. The preferred orientation depends on the exact details of the squirmer flow field. In a steady state, pushers are shown to swim parallel with the nematic director while pullers swim perpendicular to the nematic director. This behaviour arises solely from hydrodynamic coupling between the squirmer flow field and anisotropic viscosities of the host fluid. Our results suggest that an anisotropic swimming medium can be used to characterise and guide spherical microswimmers in the bulk.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2017, 119 (6), pp.068001 (1-6). 〈10.1103/PhysRevLett.119.068001〉
Liste complète des métadonnées

Littérature citée [55 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01540510
Contributeur : Juho Lintuvuori <>
Soumis le : vendredi 16 juin 2017 - 14:12:39
Dernière modification le : vendredi 27 octobre 2017 - 01:00:47

Fichier

LintuvuoriPRL2017_Postprint.pd...
Fichiers produits par l'(les) auteur(s)

Licence


Distributed under a Creative Commons Paternité - Partage selon les Conditions Initiales 4.0 International License

Identifiants

Collections

Citation

Juho S Lintuvuori, Aloïs Würger, K. Stratford. Hydrodynamics Defines the Stable Swimming Direction of Spherical Squirmers in a Nematic Liquid Crystal. Physical Review Letters, American Physical Society, 2017, 119 (6), pp.068001 (1-6). 〈10.1103/PhysRevLett.119.068001〉. 〈hal-01540510〉

Partager

Métriques

Consultations de la notice

85

Téléchargements de fichiers

17