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Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
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True Low-Power Self-Locking Soft Actuators.

Seung Jae Kim1, Onnuri Kim1, Moon Jeong Park1

  • 1Department of Chemistry, Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.

Advanced Materials (Deerfield Beach, Fla.)
|February 10, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed novel double-layered light- and electro-active polymer (LEAP) actuators. These soft actuators demonstrate enhanced displacement, load-bearing capacity, and unique self-locking capabilities for future soft robotics and biomedical applications.

Keywords:
actuatorselectro-active polymerslight-active polymerslow-power consumptionself-locking motion

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Area of Science:

  • Materials Science
  • Polymer Science
  • Robotics

Background:

  • Natural double-layered structures in organisms exhibit asymmetric volume changes.
  • Plant roots demonstrate self-organized bending in response to environmental stimuli.

Purpose of the Study:

  • To report novel light- and electro-active polymer (LEAP) actuators with a double-layered structure.
  • To investigate the performance and unique properties of these LEAP actuators.

Main Methods:

  • Fabrication of double-layered LEAP actuators.
  • Characterization of displacement, load-bearing capacity, and energy requirements.
  • Evaluation of self-locking bending motion and reversible strain.

Main Results:

  • LEAP actuators show a 250% improvement in displacement and can hold 3x heavier objects than conventional electro-active polymer actuators.
  • Bending motion can be locked for tens of minutes without power.
  • Achieved large reversible bending strain (>2.0%) with low energy consumption (6.2 mW h cm⁻² for 15 min at 3 V).

Conclusions:

  • Novel self-locking soft actuators offer significant performance enhancements.
  • These actuators have broad applicability in artificial muscles, biomedical microdevices, and soft robotics.
  • The developed LEAP actuators represent a significant advancement in soft actuator technology.