Poster (Scientific congresses and symposiums)
Complex Magnetocapillary Microswimmers
Grosjean, Galien; Vandewalle, Nicolas; Lagubeau, Guillaume et al.
2015Bifurcation and Instabilities in Fluid Dynamics
 

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Keywords :
Microswimmer; Self-assembly; Soft matter; Magnetocapillary
Abstract :
[en] When particles are suspended at air-water interfaces in the presence of a vertical magnetic field, dipole-dipole repulsion competes with capillary attraction. Magnetocapillary self-assemblies, composed of N soft-ferromagnetic beads, have been studied as a way to produce controllable micro swimmers at low Reynolds numbers. We hereby investigate the different dynamical behaviors obtained for various self-assemblies. The dynamic interaction of a pair of particles (N = 2) generates a rich behavior at the origin of a non-reciprocal motion, being the major physical ingredient for low Reynolds locomotion. By adding particles to this elementary system up to N = 8, we create new symmetries relevant to generate translational and rotational motions. We propose a model for describing the motion driven by an external field, being the basis for developing elaborated collective behaviors.
Disciplines :
Physics
Author, co-author :
Grosjean, Galien ;  Université de Liège > Département de physique > Physique statistique
Vandewalle, Nicolas  ;  Université de Liège > Département de physique > Physique statistique
Lagubeau, Guillaume ;  Université de Liège > Département de physique > Physique statistique
Hubert, Maxime ;  Université de Liège > Département de physique > Physique statistique
Language :
English
Title :
Complex Magnetocapillary Microswimmers
Publication date :
July 2015
Number of pages :
A0
Event name :
Bifurcation and Instabilities in Fluid Dynamics
Event organizer :
ESPCI Paris
Event place :
Paris, France
Event date :
du 15 juillet 2015 au 17 juillet 2015
Audience :
International
Available on ORBi :
since 20 August 2015

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