Extended Data Fig. 7: Trochoidal motion of a swimming predator-prey pair.
From: Predatorâprey interactions between droplets driven by non-reciprocal oil exchange
a, Speed of the predator BOct droplet (red) and prey methoxyperfluorobutane droplet (blue) as function of time. The schematic indicates how self-propulsion of the predator drop along the surface of the prey results in a circular trajectory of the chasing pair. b, Trochoidal trajectory of a BOct droplet chasing after an methoxyperfluorobutane droplet. Scale, 100 μm.
