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Microsensor-Internalized Fibers as Autonomously Controllable Soft Actuators.

Youngbin Lee1,2, Joonhee Won3, Dong-Yeong Kim4

  • 1Information & Electronics Research Institute, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.

Small (Weinheim an Der Bergstrasse, Germany)
|November 24, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed self-sensing soft actuators using integrated fiber technology. This innovation enables autonomous responsiveness and feedback control for advanced applications in robotics and prosthetics.

Keywords:
feedback controlfibersmicrochipssoft actuatorsthermal drawing

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Area of Science:

  • Materials Science
  • Robotics
  • Biomedical Engineering

Background:

  • Soft actuators offer flexibility and miniaturization but lack stable operation due to challenges in detecting unintentional stimuli.
  • Current methods for internal sensing in soft actuators are limited, hindering their reliable performance in dynamic environments.

Purpose of the Study:

  • To present a scalable method for producing autonomously responsive, feedback-controllable soft actuators.
  • To integrate microscale driving sources and sensors into a single fiber using thermal drawing.

Main Methods:

  • Fabrication of fiber-based soft actuators by integrating microscale driving sources and sensors via thermal drawing.
  • Implementation of a closed-loop control system utilizing internal sensory components for regulating electrothermal stimuli.
  • Demonstration of multimodal actuation, including preservation of conditions, selective device actuation, and motion modulation.

Main Results:

  • Successfully produced autonomously responsive, feedback-controllable soft actuators through scalable fiber integration.
  • Enabled precise regulation of actuation via a closed-loop system based on internal sensor feedback.
  • Demonstrated preservation of actuating conditions, selective actuation within bundles, and modulation of motion characteristics.

Conclusions:

  • The developed thermal drawing approach enables scalable manufacturing of autonomously controllable soft actuators.
  • This technology facilitates feedback-controlled, multimodal actuation in fiber-based soft actuators.
  • The innovation holds significant potential for expanding applications in biomedical engineering, robotics, and prosthetics.