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Coffee-ring effect-based simultaneous SERS substrate fabrication and analyte enrichment for trace analysis.

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Spectroscopy

Background:

  • Surface-Enhanced Raman Spectroscopy (SERS) offers high sensitivity for detecting analytes.
  • Traditional SERS methods often require complex fabrication and preconcentration steps.
  • Analyzing small volumes of analytes at low concentrations in complex matrices presents significant challenges.

Purpose of the Study:

  • To develop a highly efficient SERS platform.
  • To integrate SERS-active substrate fabrication and analyte preconcentration into a single step.
  • To enable rapid on-site analysis of challenging samples.

Main Methods:

  • Utilized the coffee-ring effect for simultaneous substrate fabrication and analyte preconcentration.
  • Developed a streamlined process for creating SERS-active surfaces.
  • Applied the platform to analyze small-volume samples with low analyte concentrations.

Main Results:

  • Achieved a highly efficient SERS platform through a one-step integration.
  • Demonstrated high sensitivity, robustness, and reproducibility.
  • Validated the platform's suitability for complex matrices and low concentrations.

Conclusions:

  • The developed SERS platform offers a simple, efficient, and robust solution for on-site analysis.
  • The integration of fabrication and preconcentration overcomes limitations of conventional methods.
  • This approach is ideal for the rapid detection of trace analytes in diverse real-world samples.