Visible to the public Reconfigurable Colloidal Microrobotic Swarm for Targeted Delivery

TitleReconfigurable Colloidal Microrobotic Swarm for Targeted Delivery
Publication TypeConference Paper
Year of Publication2019
AuthorsYu, Jiangfan, Zhang, Li
Conference Name2019 16th International Conference on Ubiquitous Robots (UR)
ISBN Number978-1-7281-3232-7
Keywordsapplied fields, Coils, collective behaviour, composability, controlled velocity, drug delivery systems, external fields, external magnetic fields, magnetic actuation, magnetic particles, magnetic resonance imaging, Metrics, Microorganisms, microrobot, microrobotic swarm behaviours, microrobotic swarms, microrobots, multi-robot systems, nanomagnetics, nanoparticles, oscillating behaviors, paramagnetic nanoparticles, potential biomedical applications, privacy, pubcrawl, Real-time Systems, real-time tracking, reconfigurable colloidal microrobotic swarm, resilience, Resiliency, robots, rotating magnetic fields, size 400.0 nm, swarm, swarming patterns, swarms exhibits out-of-equilibrium structure, targeted delivery, Tuning, untethered microrobots

Untethered microrobots actuated by external magnetic fields have drawn extensive attention recently, due to their potential advantages in real-time tracking and targeted delivery in vivo. To control a swarm of microrobots with external fields, however, is still one of the major challenges in this field. In this work, we present new methods to generate ribbon-like and vortex-like microrobotic swarms using oscillating and rotating magnetic fields, respectively. Paramagnetic nanoparticles with a diameter of 400 nm serve as the agents. These two types of swarms exhibits out-of-equilibrium structure, in which the nanoparticles perform synchronised motions. By tuning the magnetic fields, the swarming patterns can be reversibly transformed. Moreover, by increasing the pitch angle of the applied fields, the swarms are capable of performing navigated locomotion with a controlled velocity. This work sheds light on a better understanding for microrobotic swarm behaviours and paves the way for potential biomedical applications.

Citation Keyyu_reconfigurable_2019