[en] We have experimentally investigated the interactions between floating magnetic spheres which are submitted to a vertical magnetic field, ensuring a tunable repulsion, while capillary forces induce attraction. We emphasize the complex arrangements of floating bodies. The equilibrium distance between particles exhibits hysteresis when the applied magnetic field is modified. Irreversible processes are evidenced. Symmetry breaking is also found for three identical floating bodies when the strength of the magnetic repulsion is tuned. We propose a Dejarguin-Landau-Verwey-Overbeek (DLVO)–like potential, i.e., an interaction potential with a primary and a secondary minimum, capturing the main physical features of the magnetocapillary interaction, which is relevant for self-assembly.
Disciplines :
Physics
Author, co-author :
Vandewalle, Nicolas ; Université de Liège - ULiège > Département de physique > Physique statistique
Clermont, Lionel ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Terwagne, Denis
Dorbolo, Stéphane ; Université de Liège - ULiège > Département de physique > Physique statistique
Mersch, Eric ; Université de Liège - ULiège > Département de physique > Physique statistique
Lumay, Geoffroy ; Université de Liège - ULiège > Département de physique > Physique statistique
Language :
English
Title :
Symmetry breaking in a few-body system with magnetocapillary interactions
Publication date :
2012
Journal title :
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
ISSN :
1539-3755
eISSN :
1550-2376
Publisher :
American Physical Society, College Park, United States - Maryland
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