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Related Concept Videos

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

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 the...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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...
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

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Related Experiment Video

Updated: Jun 25, 2026

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
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A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer

Published on: April 12, 2017

Surface-enhanced Raman spectroscopy for identifying rock composition.

Maurizio Muniz-Miranda1, Cristina Gellini, Luca Bindi

  • 1Dipartimento di Chimica, Università di Firenze, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy. muniz@unifi.it

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|February 10, 2009
PubMed
Summary
This summary is machine-generated.

Surface-enhanced Raman scattering (SERS) improves micro-Raman spectroscopy for identifying tiny mineral grains in rocks. This technique enhances detection of pyroxene grains within complex geological samples.

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Area of Science:

  • Geochemistry
  • Mineralogy
  • Spectroscopy

Background:

  • Raman scattering is a sensitive technique for mineral identification via vibrational fingerprints.
  • Detecting small mineral inclusions or grains in rocks can be challenging for standard Raman spectroscopy.

Purpose of the Study:

  • To apply surface-enhancement Raman scattering (SERS) to micro-Raman measurements.
  • To enhance the identification and characterization of pyroxene grains within polymorphous rock matrices.

Main Methods:

  • Utilizing the surface-enhancement Raman scattering (SERS) effect.
  • Performing micro-Raman spectroscopy on rock samples containing pyroxene grains.

Main Results:

  • SERS significantly improves the sensitivity of micro-Raman detection for mineral analysis.
  • Successful identification and characterization of pyroxene grains embedded in complex rock structures were achieved.

Conclusions:

  • SERS is a powerful technique for overcoming limitations in micro-Raman spectroscopy for mineral identification.
  • This approach offers enhanced capabilities for analyzing small mineral grains in geological samples.