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Miniature Robotic Swimmer with Precise 2D Motion Control via Acoustic Vortex-Induced Propulsion.

Chadi Ellouzi1, Nicholas Andrianto1, Glen Vosgerichian1

  • 1Department of Mechanical Engineering, Rowan University, Glassboro, NJ, 08028, USA.

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Researchers developed 3D-printed acoustic lenses for precise 2D movement in miniature robots. This acoustic vortex propulsion (FAVP) offers efficient, non-contact control for micro-robotics and underwater exploration.

Keywords:
acoustic vortexacoustofluidicspropulsionrobotic swimmerultrasound

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Area of Science:

  • Robotics
  • Acoustics
  • Fluid Dynamics

Background:

  • Advanced robotic systems require precise movement without traditional mechanical actuators.
  • Acoustic waves offer a promising approach for propulsion, generating force without moving parts.
  • Controlled 2D movement in acoustic propulsion systems faces challenges in efficiency, precision, and scalability.

Purpose of the Study:

  • To explore the use of 3D-printed focused acoustic vortex propulsion (FAVP) lenses for driving miniature robotic swimmers in two dimensions.
  • To investigate the principles of acoustic vortex generation and its application for rotational and translational motion.
  • To demonstrate precise 2D motion control using acoustic forces.

Main Methods:

  • Designing and fabricating 3D-printed acoustic lenses.
  • Utilizing focused acoustic waves to generate localized vortices and streaming forces.
  • Testing a miniature robotic swimmer in controlled environments to perform complex maneuvers.

Main Results:

  • Acoustic lenses successfully focused sound waves to create propulsion forces.
  • The miniature robot demonstrated controlled 2D motion, including forward movement, rotation, and steering.
  • FAVP enabled non-contact, high-precision movement in the tested robotic system.

Conclusions:

  • Focused acoustic vortex propulsion (FAVP) is a viable solution for non-contact, high-precision movement in small-scale robots.
  • This technology has significant implications for micro-robotics and underwater exploration.
  • 3D-printed acoustic lenses offer a scalable and efficient method for acoustic propulsion.