Tag Archives: magnetism

Mimicking wet colloidal suspensions with dry granular media

Athermal two-dimensional granular systems are exposed to external mechanical noise leading to Brownian-like motion. Using tunable repulsive interparticle interaction, it is shown that the same microstructure as that observed in colloidal suspensions can be quantitatively recovered at a macroscopic scale. … Continue reading

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Magnetic ghosts and monopoles

In our new paper published in New Journal of Physics [1], we present the physics of assemblies composed of magnetized spheres. Although magnetic assemblies possess some features of magnetic colloids and particles, they remain athermal systems. Contrary to the apparent … Continue reading

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Magnetic Cheerios Patterns

The “Cheerios effect” [1] is known as the capillary attraction between identical floating objects at some liquid-air interface, similarly to the case of the famous cereals in a bowl. The capillary attraction is a major ingredient in mesoscale self-assembly. In … Continue reading

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Solid-Hexatic-Liquid transitions in a granular monolayer

In our last paper published in Phys. Rev. E, we experimentally explored the behavior of a monolayer of millimetric beads interacting through short range magnetic dipole-dipole interactions. As the system is athermal, a mechanical agitation is used to produce an … Continue reading

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Self-assembled microswimmers

Locomotion at low Reynolds number is a key physical mechanism [1] for microscopic living organisms, but has lots of technological applications like nanomachines and microrobots [2]. Our last paper [3] proposes a tricky experiment for generating low Reynolds swimming of … Continue reading

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