Conti, C;
Realini, M;
Botteon, A;
Colombo, C;
Noll, S;
Elliott, SR;
Matousek, P;
(2016)
Analytical capability of defocused μ-SORS in the chemical interrogation of thin turbid painted layers.
Applied Spectroscopy
, 70
(1)
pp. 156-161.
10.1177/0003702815615345.
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Abstract
© The Author(s) 2015. A recently developed micrometer-scale spatially offset Raman spectroscopy (m-SORS) method provides a new analytical capability for investigating non-destructively the chemical composition of sub-surface, micrometer-scale thickness, diffusely scattering layers at depths beyond the reach of conventional confocal Raman microscopy. Here, we demonstrate experimentally, for the first time, the capability of μ-SORS to determine whether two detected chemical components originate from two separate layers or whether the two components are mixed together in a single layer. Such information is important in a number of areas, including conservation of cultural heritage objects, and is not available, for highly turbid media, from conventional Raman microscopy, where axial (confocal) scanning is not possible due to an inability to facilitate direct imaging within the highly scattering sample. This application constitutes an additional capability for μ-SORS in addition to its basic capacity to determine the overall chemical make-up of layers in a turbid system.
| Type: | Article |
|---|---|
| Title: | Analytical capability of defocused μ-SORS in the chemical interrogation of thin turbid painted layers |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1177/0003702815615345 |
| Publisher version: | http://dx.doi.org/10.1177/0003702815615345 |
| Language: | English |
| Additional information: | © The Author(s) 2015. This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
| Keywords: | Spatially offset Raman spectroscopy, SORS, Subsurface, Non-destructive, Paintings, Turbid, Diffusel scattering |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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-pp.ucl.ac.uk/id/eprint/1475311 |
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