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Acoustics-Actuated Microrobots.

Yaxuan Xiao1,2, Jinhua Zhang1, Bin Fang1

  • 1Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.

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Summary

Acoustic actuation enhances microrobot capabilities for precise tasks in confined spaces. This review covers manufacturing, propulsion methods, and applications like drug delivery and microsurgery for advanced microrobotic devices.

Keywords:
3D printingacousticsmicrorobotsmicrorotorphotolithography

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Area of Science:

  • Robotics and Mechanical Engineering
  • Biomedical Engineering
  • Acoustic Physics

Background:

  • Microrobots offer unparalleled access to confined environments inaccessible to conventional robots.
  • Integrating acoustic actuation with microrobots enhances their utility through miniaturization, flexibility, and biocompatibility.

Purpose of the Study:

  • To provide a comprehensive overview of research and development in acoustics-actuated microrobots.
  • To categorize existing technologies and summarize their applications.
  • To identify challenges and future directions in the field of acoustic microrobotics.

Main Methods:

  • Review of established manufacturing techniques, including 3D printing and photolithography.
  • Classification of acoustics-actuated microrobots based on working principles: bubble propulsion, sharp-edge propulsion, and in-situ microrotor.
  • Summary of current applications, spanning targeted drug delivery, microfluidics, and microsurgery.

Main Results:

  • Detailed examination of manufacturing processes for acoustics-actuated microrobots.
  • Categorization of propulsion mechanisms, highlighting distinct operational principles.
  • Documentation of diverse applications demonstrating the versatility of these microrobots.

Conclusions:

  • Acoustic actuation significantly broadens the potential applications of microrobots.
  • The field is advancing rapidly, with ongoing challenges and promising future perspectives.
  • This review serves as a foundational resource for future innovations in acoustic microrobotics.