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Artificial Muscles Powered by Glucose.

Fariba Mashayekhi Mazar1,2, Jose G Martinez1, Manav Tyagi1

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

Advanced Materials (Deerfield Beach, Fla.)
|June 20, 2019
PubMed
Summary
This summary is machine-generated.

This study presents a novel soft artificial muscle powered by enzymes and glucose. This bio-actuator offers autonomous, reversible motion for soft robotics and medical devices.

Keywords:
artificial muscleselectroactive polymersglucose oxidaselaccasepolypyrrole

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Area of Science:

  • Biomimetic robotics
  • Bio-electrochemical systems
  • Soft robotics

Background:

  • Untethered robotic actuation typically relies on batteries.
  • Enzymatic power generation offers autonomous energy harvesting from fuels in fluids.
  • Developing self-powered actuators is crucial for advanced robotics and medical devices.

Purpose of the Study:

  • To develop a soft artificial muscle powered by biofuel (glucose) and enzymes.
  • To demonstrate autonomous, reversible actuation using a bio-electrochemical system.
  • To explore applications in soft robotics and implantable medical devices.

Main Methods:

  • Integration of glucose oxidase and laccase enzymes within an electroactive polymer (polypyrrole) actuator.
  • Catalytic conversion of glucose and oxygen into electrical power.
  • Measurement of bioelectrode performance, including open-circuit voltage and power density.
  • Demonstration of reversible bending actuation driven solely by glucose and oxygen.

Main Results:

  • The bioelectrode pair achieved a maximum open-circuit voltage of 0.70 ± 0.04 V.
  • A maximum power density of 0.27 µW cm-2 at 0.50 V was recorded.
  • The fully integrated artificial muscle demonstrated reversible bidirectional bending.
  • Actuation was successfully driven by glucose and oxygen alone.

Conclusions:

  • Enzyme-integrated artificial muscles can provide autonomous power for actuation.
  • This technology is suitable for untethered soft robotics and medical applications.
  • The developed actuator represents a significant advancement in self-powered bio-hybrid devices.