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Bioinspired Soft Robot with Incorporated Microelectrodes.

Ting Wang1, Bianca Migliori2, Beatrice Miccoli3

  • 1Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School; School of Medicine, Jiangsu University.

Journal of Visualized Experiments : Jove
|March 17, 2020
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Summary
This summary is machine-generated.

Researchers developed a low-cost, scalable soft robot mimicking a stingray using cardiac muscle tissue on a hydrogel scaffold. This bioinspired system offers life-like movements and controlled actuation for advanced biomedical applications.

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Area of Science:

  • Bioinspired robotics
  • Biomedical engineering
  • Soft robotics

Background:

  • Controlling actuation in soft robotic systems remains a significant challenge.
  • Bioinspired soft robots utilizing engineered muscle tissue and biomaterials are advancing biorobotics, particularly in biomedical research.
  • Life-like actuation dynamics are essential for soft robotic systems.

Purpose of the Study:

  • To describe a procedure for fabricating an electrically controllable soft robot with life-like movements.
  • To demonstrate a method for activating and controlling soft robots using cardiac muscle tissue contraction.
  • To create a scalable and cost-effective soft robotic system for biomedical applications.

Main Methods:

  • Fabrication of a stingray-like hydrogel scaffold using soft photolithography.
  • Integration of carbon nanotubes embedded gelatin methacryloyl (CNT-GelMA) and poly(ethylene glycol) diacrylate (PEGDA) hydrogels.
  • Incorporation of flexible gold (Au) microelectrodes with a serpentine pattern for electrical stimulation of cardiac muscle tissue.

Main Results:

  • The micropatterned hydrogel scaffold successfully mimics stingray muscle and cartilage structure.
  • CNT-GelMA hydrogel enhanced cardiomyocyte maturation and contraction, while PEGDA provided structural support.
  • Flexible serpentine gold microelectrodes enabled controlled electrical stimulation without hindering cardiomyocyte beating dynamics.

Conclusions:

  • This method provides a low-cost, scalable, and easy-to-use procedure for creating electrically controllable soft robots.
  • The bioinspired design and integrated cardiac muscle tissue enable life-like actuation and precise control.
  • This advancement holds significant potential for revolutionizing biomedical research and soft robotics.