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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

296
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
296
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

309
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
309

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Updated: Jun 7, 2025

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A practical approach to quantitative analytical surface-enhanced Raman spectroscopy.

Yikai Xu1, Wafaa Aljuhani2, Yingrui Zhang2

  • 1Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, P. R. China. yikaixu@ecust.edu.cn.

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Summary

This review explains Surface-Enhanced Raman Spectroscopy (SERS) for quantitative analysis, offering practical tips to improve experimental design and data processing for wider adoption in analytical chemistry.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy

Background:

  • Surface-Enhanced Raman Spectroscopy (SERS) offers high sensitivity, molecular specificity, and speed.
  • Despite its advantages, SERS remains a specialized technique, limiting its mainstream analytical chemistry applications.

Purpose of the Study:

  • To elucidate the fundamental principles of analytical SERS.
  • To provide practical guidance for optimizing SERS quantitation experiments.
  • To facilitate the broader application of SERS in routine analysis.

Main Methods:

  • Review of core components in SERS analysis: substrate, instrument, and data processing.
  • Discussion of analytical figures of merit pertinent to SERS.
  • Examination of literature examples illustrating SERS quantitation.

Main Results:

  • Detailed analysis of how substrate materials, Raman instrumentation, and data processing impact SERS quantitation quality.
  • Identification of challenges in applying SERS to complex real-world samples.

Conclusions:

  • Rational experimental design is key to improving SERS quantitation performance.
  • Emerging developments like multifunctional substrates, digital SERS, and AI-assisted data processing show promise for advancing SERS.
  • These advancements are crucial for transitioning SERS from a specialist technique to routine analytical practice.