Re.S.Artes
Le regard de la Science sur les Arts et le patrimoine culturel

Materials

Paintings

paintings, frescoes, murals, ...

Authentication and attribution to an artist using scientific imaging techniques (low-angled and passing light, ultraviolet ray, infrared reflectography, X-Ray imaging), microanalysis, Raman spectrometry, infrared spectrometry

For authentication purpose, scientific imaging techniques (low-angled and passing light, ultraviolet ray, infrared reflectography, X-Ray imaging) are used to highlight a signature and assess its authenticity, to reveal painter’s technique and a possible evolution of his intention (repaint, pentimenti) and to observe the weathering of the surface.

This approach complements the dating of the support (using Carbon 14 for instance) and the analysis of the paint material from a micro sampling (using microanalysisinfrared spectrometryRaman spectrometryPIXE), to validate the antiquity of the constituents and the use of a palette compatible with that employed by the presumed artist.

Analysis and condition report using scientific imaging techniques (low-angled and passing light, ultraviolet ray, infrared reflectography, X-Ray imaging), microanalysis, Raman spectrometry, infrared spectrometry

Implementing scientific imaging techniques as part of a preliminary diagnosis for restoration can accurately document the state of conservation of the paint layers and the support, and highlight previous interventions.

In addition, the characterization of pigments and binders provides information about the painter's palette and helps identify successive restoration areas.
This approach is of great interest for frescoes and mural paintings.

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