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Updated: Aug 11, 2025

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A copper foam-based surface-enhanced Raman scattering substrate for glucose detection.

Wang Peng1,2,3,4, Zhihan Xu5, Xiangting Jia5

  • 1College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China. pengwang@mail.hzau.edu.cn.

Discover Nano
|February 9, 2023
PubMed
Summary

Researchers developed a low-cost, highly sensitive Surface-Enhanced Raman Spectroscopy (SERS) substrate using silver-coated copper foam. This new substrate enables rapid, non-destructive detection of molecules like R6G and glucose for potential biological applications.

Keywords:
Copper foamGlucose detectionSurface-enhanced Raman scattering

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Raman spectroscopy offers non-destructive molecular analysis.
  • Developing highly sensitive substrates is crucial for trace detection.

Purpose of the Study:

  • To create a facile and low-cost Surface-Enhanced Raman Spectroscopy (SERS) substrate.
  • To evaluate the substrate's performance for detecting R6G and glucose.

Main Methods:

  • Fabrication of a silver-copper (Ag-Cu) substrate via a displacement reaction on copper foam.
  • Utilizing a decanethiol/mercaptohexanol interlayer for glucose detection.

Main Results:

  • The Ag-Cu substrate achieved a high SERS enhancement factor of 1.25 × 107.
  • The lowest detection limit for R6G was 10-10 Mol/L.
  • The limit of detection for glucose reached 1 µM/L.

Conclusions:

  • The developed Ag-Cu SERS substrate demonstrates high sensitivity and performance.
  • The substrate shows significant promise for various biological detection applications.