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Related Experiment Video

Updated: Jun 27, 2025

Author Spotlight: Advancements and Applications in Nanoparticle Synthesis Through Laser Ablation in Liquids
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Sensitive and high laser damage threshold substrates for surface-enhanced Raman scattering based on gold and silver

Felix Mayr1, Robert Zimmerleiter2, Patricia M A Farias3

  • 1Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz Linz Austria.

Analytical Science Advances
|May 8, 2024
PubMed
Summary

We developed a cost-effective and robust surface-enhanced Raman scattering (SERS) substrate using noble metal nanomaterials on aluminum foil. This substrate enables sensitive, high-throughput chemical trace analysis with enhanced detection capabilities.

Keywords:
gold nanoparticlesmelaminesilver nanoplatessurface‐enhanced Raman scatteringtrace chemical detection

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Surface-enhanced Raman scattering (SERS) offers sensitive and rapid detection for applications like chemical trace analysis.
  • Practical, high-throughput SERS implementation requires accessible, economical, and user-friendly substrates.

Purpose of the Study:

  • To develop a robust, reproducible, flexible, and cost-effective SERS substrate for sensitive analyte detection.
  • To enable detection at near-infrared (NIR) excitation wavelengths with high laser power tolerance.

Main Methods:

  • Fabrication via drop-cast deposition of silver or gold nanomaterials onto an aluminum foil support.
  • Utilizing localized surface plasmon resonance (LSPR) from noble metal nanomaterials for field enhancement.
  • Leveraging high Raman laser power tolerance (up to 400 mW in NIR) for additional signal amplification.

Main Results:

  • Demonstrated trace detection of melamine and rhodamine 6G with limits of detection below 0.1 ppm.
  • Achieved analytical enhancement factors on the order of 10^4 compared to bare aluminum foil.
  • Substrate maintained linear signal response even at high laser power, preventing analyte thermal decomposition.

Conclusions:

  • The developed SERS substrate is suitable for mass production due to its simple fabrication process.
  • It offers a cost-effective solution for sensitive and reliable chemical trace analysis using NIR excitation.
  • The substrate's robustness and high laser power tolerance expand its applicability in demanding sensing scenarios.