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Active generation and magnetic actuation of microrobotic swarms in bio-fluids
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Active generation and magnetic actuation of microrobotic swarms in bio-fluids
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Journal Article
Active generation and magnetic actuation of microrobotic swarms in bio-fluids
2019
Overview
In nature, various types of animals will form self-organised large-scale structures. Through designing wireless actuation methods, microrobots can emulate natural swarm behaviours, which have drawn extensive attention due to their great potential in biomedical applications. However, as the prerequisite for their in-vivo applications, whether microrobotic swarms can take effect in bio-fluids with complex components has yet to be fully investigated. In this work, we first categorise magnetic active swarms into three types, and individually investigate the generation and navigation behaviours of two types of the swarms in bio-fluids. The influences of viscosities, ionic strengths and mesh-like structures are studied. A strategy is then proposed to select the optimised swarms in different fluidic environments based on their physical properties, and the results are further validated in various bio-fluids. Moreover, we also realise the swarm generation and navigation in bovine eyeballs, which also validates the proposed prediction in the ex-vivo environment.
Although microrobotic swarms are attractive for biomedical applications, controlling their collective movement in specific bio-fluids is difficult. Here, the authors report navigated locomotion and collective behaviors of magnetic field- and medium-induced micro-robotic swarms in various bio-fluids.
