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Knitting and weaving artificial muscles.

Ali Maziz1, Alessandro Concas1, Alexandre Khaldi1

  • 1Department of Physics, Chemistry and Biology (IFM), Biosensors and Bioelectronics Centre, Linköping University, 58183 Linköping, Sweden.

Science Advances
|February 1, 2017
PubMed
Summary

Researchers developed soft, wearable artificial muscles using textile processing and electroactive polymers. These novel actuators mimic natural muscle for improved human-device interaction.

Keywords:
Artificial musclesConducting Polymersactuatorsadvanced textile technologysoft robotics

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Robotics

Background:

  • Existing artificial muscles often lack the softness, silence, and compliance required for natural human-device interaction.
  • Skeletal muscle performance remains a benchmark for advanced assistive devices.

Purpose of the Study:

  • To develop soft, wearable artificial muscles using textile processing and electroactive polymers.
  • To achieve tunable force and strain output for natural human-device interaction.

Main Methods:

  • Utilized cellulose yarns assembled into fabrics and coated with conducting polymers via metal-free deposition.
  • Employed weaving to increase output force by assembling yarns in parallel.
  • Used knitting to amplify strain, creating a stretchable fabric.

Main Results:

  • Demonstrated the feasibility of wearable, soft artificial muscles through textile fabrication.
  • Achieved linearly scalable force with the number of yarns in woven fabrics.
  • Reported a 53-fold increase in strain in knitted fabrics, with enhanced mechanical stability.

Conclusions:

  • Textile processing offers a scalable and rational method for producing wearable artificial muscles.
  • These novel actuators enable new design possibilities for assistive devices.
  • The developed artificial muscles provide a pathway towards more natural human-device interaction.