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Crystals
Volume 11
Issue 3
10.3390/cryst11030257
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Article

Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra

by
Francesca Assunta Pisu
,
Carlo Maria Carbonaro
,
Riccardo Corpino
,
Pier Carlo Ricci
and
Daniele Chiriu
*
Department of Physics, University of Cagliari, Cittadella Universitaria, I-09042 Monserrato, Italy
*
Author to whom correspondence should be addressed.
Crystals 2021, 11(3), 257; https://doi.org/10.3390/cryst11030257
Submission received: 5 February 2021 / Revised: 26 February 2021 / Accepted: 2 March 2021 / Published: 5 March 2021
(This article belongs to the Special Issue Structural and Optical Properties of Cultural Heritage Crystalline Materials)
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Abstract

In this study, we proposed a preliminary kinetic model applied to the carbonation process of fresh lime with the intention to realize a diagnostic tool for aged fresco paintings. The model can be useful, in particular, in the fields of conservation and restoration of ancient lime wall paintings. The dating procedure was achieved through the analysis of 1064 nm excited Raman spectra collected on artificially aged lime samples in addition to ancient samples taken from literature and covering a period of two thousand years. The kinetic model was developed monitoring the concentration of emitting defective centers related to the intensity of 780 cm−1 calcium hydroxide band as a function of the time and depth. This preliminary model shows how Raman spectroscopy, especially NIR micro-Raman, is advantageous for diagnostics and conservation in the cultural heritage field.
Keywords: frescoes; kinetic model; Raman spectroscopy; carbonation frescoes; kinetic model; Raman spectroscopy; carbonation
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MDPI and ACS Style

Pisu, F.A.; Carbonaro, C.M.; Corpino, R.; Ricci, P.C.; Chiriu, D. Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra. Crystals 2021, 11, 257. https://doi.org/10.3390/cryst11030257

AMA Style

Pisu FA, Carbonaro CM, Corpino R, Ricci PC, Chiriu D. Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra. Crystals. 2021; 11(3):257. https://doi.org/10.3390/cryst11030257

Chicago/Turabian Style

Pisu, Francesca Assunta, Carlo Maria Carbonaro, Riccardo Corpino, Pier Carlo Ricci, and Daniele Chiriu. 2021. "Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra" Crystals 11, no. 3: 257. https://doi.org/10.3390/cryst11030257

APA Style

Pisu, F. A., Carbonaro, C. M., Corpino, R., Ricci, P. C., & Chiriu, D. (2021). Fresco Paintings: Development of an Aging Model from 1064 nm Excited Raman Spectra. Crystals, 11(3), 257. https://doi.org/10.3390/cryst11030257

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