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Related Experiment Video

Updated: Jun 21, 2026

Fabrication of polydimethylsiloxane (PDMS)-Based Flexible Surface-Enhanced Raman Scattering (SERS) Substrate for Ultrasensitive Detection
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Surface plasmon resonance hydrogen sensor based on metallic grating with high sensitivity.

Kaiqun Lin1, Yonghua Lu, Junxue Chen

  • 1Department of Physics, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, PR China.

Optics Express
|July 8, 2009
PubMed
Summary

A novel grating-based surface plasmon resonance (SPR) sensor using palladium film offers high sensitivity for hydrogen detection. This optimized sensor design outperforms conventional prism-based SPR sensors.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Analytical Chemistry

Background:

  • Surface Plasmon Resonance (SPR) sensors are crucial for chemical detection.
  • Traditional prism-based SPR sensors have limitations in sensitivity and design flexibility.
  • Metallic gratings offer a promising platform for enhanced SPR sensing.

Purpose of the Study:

  • To design and optimize a highly sensitive grating-based SPR sensor for hydrogen detection.
  • To investigate the impact of structural parameters on sensor performance.
  • To compare the grating-based SPR sensor with conventional prism-based SPR sensors.

Main Methods:

  • Utilizing rigorous coupled-wave analysis (RCWA) to model sensor performance.
  • Investigating the effects of grating period and palladium film thickness.

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Last Updated: Jun 21, 2026

Fabrication of polydimethylsiloxane (PDMS)-Based Flexible Surface-Enhanced Raman Scattering (SERS) Substrate for Ultrasensitive Detection
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Published on: November 17, 2023

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  • Analyzing sensitivity, SPR curve width, and reflective amplitude.

    • Main Results:

    • Optimized structural parameters for the grating-based SPR hydrogen sensor were determined.
    • High sensitivity was achieved by exciting surface plasmons using the negative diffraction order of a metallic grating.
    • The grating-based SPR sensor demonstrated superior performance compared to prism-based SPR sensors.

    Conclusions:

    • The developed grating-based SPR sensor provides a highly sensitive and effective method for hydrogen detection.
    • Optimizing grating parameters and palladium transducer layers is key to enhancing SPR sensor performance.
    • This grating-based approach offers advantages over traditional SPR sensing methods.