Polymerization degree and Raman identification of ancient glasses used for jewelry, ceramic enamels and mosaics
By P. Colomban. 2003
252 citations recorded by the source corpus.
Abstract We demonstrate the utility of Raman spectroscopy as a technique for the identification of ancient glasses and enamel coatings of ceramics. As for any silicate glasses, the addition of network modifiers breaks the Si–O linkages and modifies the degree of polymerization and hence the relative intensity of the Si–O bending and stretching modes. We demonstrate empirically that the ratio of these envelopes is well correlated to the glass structure and to the firing technology used. Spectral Qn components assigned to isolated and connected SiO4 vibrational units allow more precise analysis. Selected porcelains, faiences, potteries and glasses representative of the different Asian, Islamic and European production technologies were studied. Modern porcelain enamels are used as compositional references.
Subfields: Archeology, Earth-Surface Processes, Geochemistry and Petrology
View Paper: https://www.semanticscholar.org/paper/18a5e98878758edd0182dcff5621fc5496b92af7
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In Archeology
In Earth-Surface Processes
In Geochemistry and Petrology
Citations in the corpus
- Raman Spectroscopy of Nanomaterials: How Spectra Relate to Disorder, Particle Size and Mechanical Properties (2007, background): “The deformation (δSi-O-Si ∼500 cm) and elongation (νSi-O∼800-1200 cm) modes depend on the connectivity of the SiO4 tetrahedra and can be fitted with components called Qn and Qn', respectively (n represents the number of Si-O-Si bridges per tetrahedron) [306-308].”