Fig. 2
From: Manipulation of emergent vortices in swarms of magnetic rollers
Chirality switching statistics of a roller vortex. a Chirality switching events illustrated by the polar order parameter of a roller vortex formed in a soft harmonic gravitational confinement. B0 = 5.78 mT, fB = 40 Hz. b Events of the flock intermittency not resulted in a roller vortex chirality switch. c Probability distribution functions for the roller vortex to have no chirality switching events (P0) or have one successful chirality change (P1). Error bars are the standard deviation of the measurements
