Conti, C;
Colombo, C;
Realini, M;
Matousek, P;
(2015)
Subsurface analysis of painted sculptures and plasters using micrometre-scale spatially offset Raman spectroscopy (micro-SORS).
Journal of Raman Spectroscopy
, 46
(5)
pp. 476-482.
10.1002/jrs.4673.
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Abstract
A recently developed variant of spatially offset Raman spectroscopy (SORS) for the non-invasive analysis of thin painted layers, micro-SORS, has been applied, for the first time, to real objects of Cultural Heritage – namely painted sculptures and plasters. Thin layers of paint originating from multiple restoration processes often applied over many centuries have been analysed non-destructively using micro-SORS to depths inaccessible to, or unresolvable into separate layers, by conventional confocal Raman microscopy. The concept has been demonstrated on several artistic artefacts of historical significance originating from Italy and dating from the medieval to the 18th century. The technique extends the depth applicability of Raman spectroscopy and with its inherently high chemical specificity that expands the portfolio of existing non-destructive analytical tools in Cultural Heritage permitting to avoid cross-sectional analysis often necessitated with this type of samples with conventional Raman microscopy. Currently, the method is non-invasive only for artworks that can be placed under Raman microscope although there is a prospect for its use in a mobile system with largely removed restrictions on sample dimensions.
| Type: | Article |
|---|---|
| Title: | Subsurface analysis of painted sculptures and plasters using micrometre-scale spatially offset Raman spectroscopy (micro-SORS) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/jrs.4673 |
| Publisher version: | https://doi.org/10.1002/jrs.4673 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Technology, Spectroscopy, spatially offset Raman spectroscopy, subsurface, non-destructive, sculptures, plasters, MEDIA, PIGMENTS, LIBRARY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1499609 |
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