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Internal Standard-Embedded Shell-Isolated Satellite Nanostructures for Enhanced SERS Sensing.

Bao-Ying Wen1, Jing-Wen Zhou2, Jia-Sheng Lin2

  • 1College of Chemistry, Chemical Engineering and Environment, Fujian Key Laboratory of Modern Analytical Science and Separation Technology, Fujian Provincial University Key Laboratory of Pollution Monitoring and Control, Minnan Normal University, Zhangzhou 363000, China.

Analytical Chemistry
|May 19, 2026
PubMed
Summary

Researchers developed novel nanostructures (SHINs-Au) for precise, rapid detection of trace substances using Surface-Enhanced Raman Spectroscopy (SERS). This technology enhances public safety through accurate drug screening and crime prevention.

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Area of Science:

  • Nanotechnology
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Quantitative analysis in Surface-Enhanced Raman Spectroscopy (SERS) faces critical challenges.
  • Accurate detection of trace substances is vital for public safety applications.

Purpose of the Study:

  • To design an internal standard-embedded shell-isolated satellite nanostructure (SHINs-Au) for accurate and rapid quantitative SERS analysis.
  • To engineer three-dimensional plasmonic hotspots for enhanced Raman responses.

Main Methods:

  • Fabrication of shell-isolated satellite nanostructures (SHINs-Au) with co-embedded internal standards.
  • Precise control over gold nanoparticle size and spatial distribution to manipulate hotspots and electromagnetic fields.
  • Optimization of near-field coupling efficiency and molecular reaction pathways through tunable nanoparticle size.

Main Results:

  • Achieved a detection limit of 0.05 mg/L for methamphetamine.
  • Demonstrated excellent post-calibration linearity (R² = 0.9934).
  • Engineered 3D plasmonic hotspots for significantly enhanced Raman responses.

Conclusions:

  • The SHINs-Au platform offers a robust solution for quantitative SERS analysis of trace substances.
  • This technology is highly applicable for drugged driving screening and drug-related crime prevention.
  • The nanostructure design shows significant potential for advancing public safety management.