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Related Concept Videos

Sensory Functions of the Skin01:16

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Related Experiment Video

Updated: Jul 28, 2025

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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All Resistive Pressure-Temperature Bimodal Sensing E-Skin for Object Classification.

Shilei Han1, Xinrong Zhi1, Yifan Xia1

  • 1Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, 475004, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|June 1, 2023
PubMed
Summary

This study presents a novel electronic skin (E-skin) capable of sensing both pressure and temperature using only electrical resistance. This bimodal sensing E-skin enhances object classification for intelligent robots and smart prosthetics.

Keywords:
all resistive output signalslaser-induced grapheneobject classificationpressure-temperature bimodal sensing E-skinstimuli perception

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Area of Science:

  • Materials Science
  • Robotics
  • Sensors

Background:

  • Electronic skin (E-skin) offers significant potential for object classification in intelligent robots.
  • Challenges exist in E-skin development due to multiple output signal types.

Purpose of the Study:

  • To develop a hierarchical pressure-temperature bimodal sensing E-skin with all resistive output signals.
  • To enable accurate object classification for intelligent robots and human-machine interfaces.

Main Methods:

  • Fabrication of an E-skin using laser-induced graphene/silicone rubber (LIG/SR) for pressure sensing and NiO for temperature sensing.
  • Utilizing highly conductive LIG as both pressure-sensitive material and interdigital electrodes.
  • Simultaneous pressure and temperature perception with negligible crosstalk using only electrical resistance.

Main Results:

  • Achieved high sensitivity for pressure perception (-34.15 kPa⁻¹).
  • Obtained a high temperature coefficient of resistance (-3.84%°C⁻¹) in the 24-40 °C range.
  • Demonstrated over 92% accuracy in object classification using a smart glove based on the E-skin with deep learning.

Conclusions:

  • The developed bimodal sensing E-skin effectively integrates pressure and temperature sensing.
  • This technology shows promise for advanced human-machine interfaces, intelligent robots, and smart prosthetics.
  • The all-resistive output simplifies signal processing for multimodal sensing applications.