Figure 4.

Representative motion of the MNEs during catalysis. (a) Typical trajectories of the MNEs for the cases of an isolated MNE (Trajectory 1), MNE near another MNE (Trajectory 2), MNE near a growing bubble (Trajectory 3), MNE at a distance of approximately 600 μm to a growing bubble (Trajectory 4), and MNE near an unstable bubble (Trajectory 5). The color scale shows the time of the bubble location in the trajectories. The inset shows a rotating magnetic field. (b) The displacement of the MNEs for the case of ensemble-ensemble interaction, (c) MNE rotating near a bubble and isolation, and (d) MNE rotating at a large distance from a growing and unstable bubble. The red dashed line in (b) indicates the position at the critical distance between the two MNEs.