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Updated: Jan 12, 2026

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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A Self-Powered Tactile Sensor Resistant to Environmental Interference.

Hao Suo1, Li Li1, Jie Sun1

  • 1National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding, 071002, China.

Advanced Materials (Deerfield Beach, Fla.)
|November 3, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new tactile sensor using mechanoluminescence (ML) from ScBO3:Cr3+ crystals. This robust sensor overcomes ambient interference for reliable human-machine interaction and signature authentication.

Keywords:
dopingmechanoluminescencenear‐infraredphosphor

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Area of Science:

  • Materials Science
  • Sensors and Transducers
  • Optoelectronics

Background:

  • Current tactile sensing relies on triboelectrification, which is sensitive to environmental interference.
  • This limits the real-world applicability of advanced tactile sensors for human-machine interaction.

Purpose of the Study:

  • To develop a robust tactile sensing platform overcoming ambient interference.
  • To leverage piezoelectricity for mechano-optoelectronic transduction.

Main Methods:

  • Developed novel ScBO3:Cr3+ crystals exhibiting mechanoluminescence (ML) under mechanical pressure.
  • Employed combinatorial doping to precisely modulate ML wavelength profiles (≈1 nm precision, ≈273 nm FWHM).
  • Integrated ML crystals with silicon photodiodes for optoelectronic signal conversion.

Main Results:

  • Achieved intense broadband near-infrared light emission from ScBO3:Cr3+ crystals via self-recoverable ML.
  • Demonstrated interference-free optoelectronic conversion, enabling a fast-response (≈20 ms) tactile stylus.
  • Successfully authenticated signatures using the tactile stylus and machine learning in complex environments.

Conclusions:

  • The developed ScBO3:Cr3+ crystal-based tactile sensor offers a robust alternative to existing technologies.
  • This platform enables reliable tactile sensing in challenging environments, advancing human-machine interaction.
  • The precise control over ML properties opens new avenues for tailored optoelectronic sensor design.