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Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
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Bioinspired multi-responsive soft actuators controlled by laser tailored graphene structures.

Heng Deng1, Cheng Zhang, Jheng-Wun Su

  • 1Department of Mechanical & Aerospace Engineering, University of Missouri-Columbia, Columbia, Missouri 65211, USA. LinJian@missouri.edu.

Journal of Materials Chemistry. B
|April 8, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed bioinspired laser-induced graphene (LIG) structures that mimic plant cellulose fibrils. These aligned LIG structures enable precise control over soft actuator shape changes, leading to programmable soft robots.

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Area of Science:

  • Materials Science and Engineering
  • Bioinspired Robotics
  • Nanotechnology

Background:

  • Plants utilize aligned cellulose fibrils for programmable shape changes in response to environmental stimuli.
  • Existing synthetic self-morphing materials often require separate fabrication and alignment steps for constraining structures.
  • A more efficient bottom-up approach, where alignment and synthesis occur simultaneously, is inspired by natural systems.

Purpose of the Study:

  • To develop a bioinspired bottom-up method for fabricating aligned laser-induced graphene (LIG) structures.
  • To utilize these LIG structures as geometrically constraining elements in soft actuators.
  • To enable programmable shape-changing behaviors in soft actuators stimulated by various environmental factors.

Main Methods:

  • Fabrication of aligned laser-induced graphene (LIG) structures using a bottom-up approach, mimicking plant cellulose fibrils.
  • Integration of LIG structures with polymer layers to create multi-layered soft actuators.
  • Stimulation of actuator motion using various energy sources including light, electricity, organic vapor, and moisture.

Main Results:

  • Demonstrated precise control over soft actuator shape-changing behaviors due to the geometrically constraining effect of aligned LIG structures.
  • Achieved programmable actuations in response to diverse stimuli (electricity, light, organic vapor, moisture).
  • Showcased potential applications of the soft actuators as soft grippers and walking robots.

Conclusions:

  • The bioinspired bottom-up fabrication of aligned LIG structures offers an efficient method for creating advanced soft actuators.
  • These LIG-based soft actuators exhibit versatile, programmable shape-changing capabilities.
  • The developed technology holds significant potential for applications in soft robotics, microelectromechanical systems, and beyond.