Fig. 7: Navigated locomotion of medium-induced swarms in bovine vitreous humour.
From: Active generation and magnetic actuation of microrobotic swarms in bio-fluids
a With optical imaging feedback, the medium-induced swarm is capable of following a rectangular trajectory. b The generation process of a medium-induced swarm in vitreous humour. c The navigated locomotion process in vitreous humour with ultrasound imaging feedback. The circles indicate the present location of the swarm, the dotted circles indicate the previous location of the swarm, and the green dotted arrows shows the moving trajectories of the swarm. d The translational velocity of the swarms formed by nanoparticles after hydrophobic surface treatment. The scale bars indicate 600 μm. The error bars in d indicate standard deviations obtained from three experiments.
