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Updated: Jun 23, 2025

Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery
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A Flexible Double-Sided Curvature Sensor Array for Use in Soft Robotics.

Racha Benarrait1,2, Muneeb Ullah-Khan2, Jérémy Terrien2

  • 1Institute of Microtechnology, Technische Universität Braunschweig, 38124 Braunschweig, Germany.

Sensors (Basel, Switzerland)
|June 19, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a flexible double-sided curvature sensor array for soft robotics. This novel sensor mimics human hand gripping and enables object sensing, advancing robotics and prosthetics.

Keywords:
flexible electronicsflexible sensormicro-electro-mechanical systemsmicrofabricationpiezoresistive sensorshape memory alloysoft roboticsstrain gauge

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Area of Science:

  • Robotics
  • Materials Science
  • Sensor Technology

Background:

  • Soft robotics requires advanced sensors for dexterity and interaction.
  • Mimicking human hand functionality is a key challenge in robotic development.
  • Flexible sensors offer unique advantages for conformable robotic systems.

Purpose of the Study:

  • To design, fabricate, and characterize a novel flexible double-sided curvature sensor array.
  • To integrate the sensor array with Shape Memory Alloy for hand-like gripping.
  • To demonstrate the sensor's capability in object sensing within a soft gripper.

Main Methods:

  • Utilized a piezoresistive sensor array with gold strain gauges on a polyimide substrate in a Wheatstone bridge configuration.
  • Arranged sensor strips to mimic hand fingers and integrated Shape Memory Alloy foils for temperature-controlled gripping.
  • Embedded sensors in Polydimethylsiloxane (PDMS) for enhanced tactile properties and demonstrated object sensing.

Main Results:

  • Successfully designed and fabricated a flexible double-sided curvature sensor array.
  • Demonstrated temperature-controlled gripping motion mimicking human hand using Shape Memory Alloy integration.
  • Showcased object sensing capabilities within a flexible granular material gripper.

Conclusions:

  • The developed flexible curvature sensor array shows significant promise for soft robotics applications.
  • The integration with Shape Memory Alloy enables biomimetic hand movements, enhancing robotic dexterity.
  • Accurate shape reconstruction and tactile sensing capabilities pave the way for advanced robotic hands and prosthetics.