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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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Magnetoactive bistable soft actuators for programmable large shape transformations at low magnetic fields.

Hao Wen1,2, Zihao Shao1,2, Yuxuan Sun1,2

  • 1Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China.

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|November 5, 2025
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Summary
This summary is machine-generated.

This study introduces a novel bistable soft actuator using magnetic microparticles. It achieves significant shape changes with low-intensity pulsed magnetic fields, improving efficiency for soft robotics.

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Area of Science:

  • Soft robotics
  • Intelligent material systems
  • Magnetoactive actuators

Background:

  • Growing demand for advanced actuation strategies in soft robotics.
  • Existing magnetoactive actuators require high magnetic fields, limiting efficiency and applicability.
  • Need for efficient, untethered control in soft actuators.

Purpose of the Study:

  • To develop a bistable soft actuator with enhanced performance.
  • To enable substantial shape changes using low-intensity pulsed magnetic fields.
  • To analyze design parameters and clarify the bistable mechanism.

Main Methods:

  • Embedding magnetic microparticles into a hemispherical soft actuator.
  • Applying low-intensity pulsed magnetic torques.
  • Analyzing design parameters and actuator performance.

Main Results:

  • Achieved substantial shape changes with a shape change ratio exceeding 0.8.
  • Actuator remains stable in two configurations without external fields.
  • Operates effectively under magnetic fields below 20 mT.

Conclusions:

  • The novel bistable actuator offers efficient, untethered control for soft robotics.
  • Demonstrated versatility in applications like soft pumps, reprogrammable metamaterials, and grippers.
  • Presents a promising advancement for constrained boundary conditions in soft actuation.