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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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Design Example: Resistive Touchscreen01:14

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Assessing Body Temperature - Rectal01:27

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Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
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Related Experiment Video

Updated: Jan 7, 2026

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
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Quasi-Periodic Porous Structures-Based Temperature and Pressure Dual-Mode Electronic Skin for Material Cognition.

Xiaoguang Gao1, Chengzhen Xue1, Xiaoliang Zhang1

  • 1Institute of Biomedical Precision Testing and Instrumentation, College of Artificial Intelligence, Taiyuan University of Technology, Taiyuan, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 5, 2026
PubMed
Summary

Researchers developed a novel dual-mode electronic skin (DMES) with a unique porous structure for advanced material cognition. This electronic skin accurately identifies diverse materials, outperforming human skin.

Keywords:
material cognitionneural networkquasi‐periodic porous structuretemperature and pressure sensing

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Area of Science:

  • Materials Science
  • Sensors and Actuators
  • Artificial Intelligence

Background:

  • Developing electronic skin for material cognition is crucial.
  • Existing electronic skins struggle with precise T-P sensing and material identification.

Purpose of the Study:

  • To create a temperature and pressure (T-P) dual-mode electronic skin (DMES) with a controllable porous structure for material cognition.
  • To achieve precise T-P sensing without crosstalk and high accuracy in material identification.

Main Methods:

  • Fabrication of a quasi-periodic porous structure using confined 2D bubbles and PDMS.
  • Integration of graphene, PEDOT:PSS, and Bi2Te3 onto the porous PDMS.
  • Utilizing thermoelectric and piezoresistive signals with a convolutional neural network for material analysis.

Main Results:

  • The T-P DMES demonstrated precise detection and distinction of T-P stimuli without crosstalk.
  • The quasi-periodic porous structure allowed for optimized sensing performance by adjusting pore size.
  • The system achieved 97.64% accuracy in identifying 33 different materials, including challenging cases like similar softness/thermal conductivity materials and diverse alloys.

Conclusions:

  • The proposed T-P DMES with a quasi-periodic porous structure offers superior material cognition capabilities.
  • This technology significantly surpasses existing electronic skins and human skin in material identification accuracy.
  • The controllable porous structure is key to optimizing sensing performance and enabling advanced material recognition.