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Updated: Jun 14, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Dynamical regimes of a paramagnetic particle circulating a magnetic bubble domain
Pietro Tierno1, Tom H Johansen, Francesc Sagués
1Departament de Química Física, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain. ptierno@ub.edu
Abstract:
We study the dynamics of a single paramagnetic colloidal particle dispersed in water and circulating around a cylindrical magnetic domain ("magnetic bubble") when driven by an external rotating magnetic field. We record the particle trajectories and measure its angular displacement by changing the strength, frequency, and ellipticity of the applied magnetic field and show that this simple system exhibits several interesting phenomena, from synchronous-asynchronous rotations, to localized oscillations. We complement the experimental results with numerical simulations which explore the dynamical regimes of the rotating particle.
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