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3D Printed Acoustically Programmable Soft Microactuators.

Murat Kaynak1, Amit Dolev1, Mahmut Selman Sakar1

  • 1Institute of Mechanical Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.

Soft Robotics
|June 15, 2022
PubMed
Summary
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Researchers developed novel all-mechanical soft microrobotic systems powered by acoustic signals. These systems utilize 3D nanoprinted polymers and air bubbles for programmable movement, offering a new approach for biomedical applications.

Area of Science:

  • Materials Science
  • Robotics
  • Acoustics
  • Biomedical Engineering

Background:

  • Soft microrobotic systems offer potential for biomedical applications.
  • Magnetic fields and light are common energy sources, but acoustics remain underexplored.
  • Acoustic waves are abundant in nature and engineering.

Purpose of the Study:

  • To introduce a novel method for powering and programming soft microrobotic systems using acoustic waves.
  • To engineer micromechanical systems that respond to acoustic signals.
  • To explore acoustofluidic interactions for microrobotic control.

Main Methods:

  • Utilizing 3D nanoprinted polymer systems with selectively excited air bubbles.
  • Employing computationally modeled compliant mechanisms and pressure fields.
Keywords:
3D printingacousticsbistable mechanismsmicroactuatorsphysical intelligencesoft robotics

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  • Analyzing the dynamics of bubble oscillators and their interactions with fluids.

    • Main Results:

    • Demonstrated programmed commands within 3D nanoprinted polymer systems.
    • Engineered micromechanical systems exhibiting acoustofluidic interactions.
    • Showcased remote reconfiguration of micromechanical systems using acoustic forces and mechanical switches.

    Conclusions:

    • Acoustic signals can power and program all-mechanical soft microrobotic systems.
    • The developed modules serve as building blocks for novel acoustically controlled microrobots.
    • This approach offers a sustainable and multifunctional alternative for microrobotics.