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Related Concept Videos

Raman Spectroscopy: Overview01:20

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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.
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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
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In situ Raman mapping of art objects.

D Lauwers1, Ph Brondeel2, L Moens2

  • 1Department of Analytical Chemistry, Raman Spectroscopy Research Group, Ghent University, Krijgslaan 281, S12, 9000 Ghent, Belgium raman@ugent.be.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|November 2, 2016
PubMed
Summary
This summary is machine-generated.

A new in situ Raman mapping system non-destructively analyzes art objects, revealing chemical compound distribution. This technique offers promising advancements for art investigation and conservation science.

Keywords:
archaeometrydata processingportable Raman mapping system

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Art Conservation Science

Background:

  • Raman spectroscopy is a valuable non-destructive technique for art object investigation.
  • In situ analysis of art objects is crucial for understanding their composition and condition.
  • Current laboratory approaches limit the spatial analysis of compounds in artworks.

Purpose of the Study:

  • To develop an in situ Raman mapping system for art objects.
  • To correlate chemical information with the spatial distribution of compounds.
  • To address challenges in developing portable Raman mapping systems for field applications.

Main Methods:

  • Development of an in situ Raman mapping system with stable positioning.
  • Utilizing nineteenth-century porcelain cards for system calibration and testing.
  • Implementing a four-step post-processing workflow: data import, visualization, variable extraction, and Raman image creation.

Main Results:

  • Successful development of an in situ Raman mapping system for art analysis.
  • Demonstration of the system's capability to map chemical distribution spatially.
  • Validation of the post-processing workflow for large spectral datasets.

Conclusions:

  • The developed in situ Raman mapping system shows significant promise for art investigation.
  • The system enables detailed chemical mapping of art objects in their original setting.
  • Further development and application of this technique will enhance art conservation and analysis.