This paper experimentally demonstrates that precessing magnetic fields induce metachronal waves on the periphery of self-assembled rafts of soft ferromagnetic beads at a liquid-air interface. The sequential movement of the outermost particles, mimicking cilia or legs, causes controllable locomotion, even at low Reynolds numbers, using only spatially uniform fields.
Publisher
Communications Physics
Published On
Jun 19, 2020
Authors
Ylona Collard, Galien Grosjean, Nicolas Vandewalle
Tags
magnetic fields
metachronal waves
self-assembled rafts
ferromagnetic beads
locomotion
low Reynolds numbers
liquid-air interface
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