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Title:
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Differentiation with Raman spectroscopy among several natural ultramarine blues and the synthetic ultramarine blue used by the Catalonian modernist painter Ramon Casas i Carbo
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Author:
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Ramos de Torres, Antonio; Ruiz Moreno, Sergio; Lopez Gil, A; Ferrer, Pere; Chillon, M.C
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques |
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Abstract:
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This paper investigates, using only Raman spectroscopy, the spectral differences among the synthetic ultramarine blue (J. B. Guimet) and three natural ultramarine blues (lazurites) corresponding to three lapis lazulis from different geographical sources (Chile, Afghanistan and Siberia). The synthetic ultramarine blue used as reference pigment is the identified in an artwork created around 1917 by the Catalonian modernist painter Ramon Casas i Carbo. This synthetic pigment is compared with the three natural ultramarine blues and, in his turn, the latter are also compared each other. In order to quantify the spectral differences, a rigorous methodology based on the Euclidean distance between homologue spectral segments (or intervals) has been developed and presented here. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Física::Física molecular::Espectroscòpia molecular
-Raman spectroscopy
-Raman spectroscopy
-lazurites
-synthetic ultramarine
-Euclidean distance
-Lapis lazuli
-Pigments
-Identification
-Art
-Archeology
-Microscopy
-Spectra
-History
-State
-Situ
-Espectroscòpia de Raman |
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Rights:
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Document type:
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Article - Published version
Article |
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