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A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients
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Published on: October 27, 2023

Bimodal Sensing Precompressed Flexoskeleton Soft Actuator.

Zhibo Luan1, Jian Li1, Yangwei Wang2

  • 1State Key Laboratory of Utilization of Woody Oil Resource, Northeast Forestry University, Harbin 150040, China.

ACS Applied Materials & Interfaces
|June 26, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a soft robotic actuator with an integrated self-powered bimodal sensor. This system enhances actuation and enables simultaneous distance and pressure sensing for adaptive robot behavior.

Keywords:
bimodal sensingpiezoelectric sensingpneumatic soft actuatorprecompressed flexoskeletonself-powered flexible sensortriboelectric sensing

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Published on: November 14, 2015

Area of Science:

  • Robotics
  • Materials Science
  • Sensor Technology

Background:

  • Soft robotic systems require high compliance and multimodal sensing to mimic natural organisms.
  • Existing designs face challenges in balancing deformability, force output, and stable multimodal perception.

Purpose of the Study:

  • To develop a soft actuator with integrated self-powered sensing for enhanced actuation and perception.
  • To enable soft robots to perceive both proximity and contact stimuli with stability and durability.

Main Methods:

  • Designed a precompressed flexoskeleton soft actuator incorporating a flexible bimodal sensor.
  • Integrated noncontact triboelectric proximity sensing with contact piezoelectric pressure sensing.
  • Utilized a trimmed spiral surface flexoskeleton for constrained radial expansion and controlled deformation.

Main Results:

  • The actuator achieved a blocking force of 17.28 N and a 30.5° bending angle.
  • The bimodal sensor accurately detected distance (0.24–0.71 V) and pressure (up to 5.98 V).
  • Demonstrated adaptive interactions in manipulators, grippers, and tripedal robots.

Conclusions:

  • The integrated system offers a feasible strategy for combining self-powered multimodal sensing with soft actuation.
  • Highlights the potential of functional sensing materials for intelligent soft robotic systems.
  • Enables enhanced adaptive behaviors in soft robots through synergistic sensing and actuation.