An Acousto‐Microrobotic Interface with Vision‐Feedback Control

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Abstract
Precise manipulations for micro/nano targets of synthetic particles and bio‐cells hold great promise for the next generation of nano robotic systems and micro‐machines. Although considerable efforts have been devoted to developing propulsion protocols for micro/nano‐manipulation, the limited intelligence without effective control for current microrobots prohibits them away from most sophisticated applications. Here, a novel approach integrating the vision feedback control (VFC) is presented into a microrobotic platform powered by acoustic fields to accomplish autonomous targets identification and optimization of the locomotion resolution. Driven by local enhanced acoustic streaming, microparticles in the vicinity of the linear manipulator could be transported along the given pathway. Via vision feedback control, the targets of microparticles are automatically recognized in the acousto‐microrobotic interface and driven toward the exact user‐defined destinations. The VFC integrated interface is also adoptable to multiple particle manipulations, where each particle is distinguished with unique index numbers for a convenient on‐demand selection. At last, this closed‐loop interface is validated to control the motion of bio‐cells, illustrating the good robustness and biological compatibility. The VFC based control strategy for acousto‐microrobotic interface is featured with favorable controllability and thus will have great potentials in myriad scenarios for smart micro/nano systems.
Funding Information
  • National Natural Science Foundation of China (51975278)
  • Natural Science Foundation of Jiangsu Province (BK20181292)
  • Alexander von Humboldt-Stiftung
  • Fundamental Research Funds for the Central Universities (NS2019009, kfjj20200107)

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