| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Theodorakopoulos, Charis
Northumbria University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2024A study on the laser-induced phenomena of commercial dammar, ketone-based and poly(isobutyl methacrylate) resin artists’ varnishes upon Er:YAG laser irradiation
- 2020An analytical evaluation of Er:YAG laser cleaning tests on a nineteenth century varnished paintingcitations
- 2016A Preliminary Investigation Into the Use of Diethylenetriaminepentaacetic Acid (DTPA), and Ethylenediaminetetraacetic Acid (EDTA) to Treat Foxing of Paper Objects.
- 2013Cleaning of water-gilded surfaces using hydro- and solvent-gels
- 2007Removal of simulated dust from acrylic paints by laser irradiation at IR, Vis and UV wavelengths
Places of action
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article
An analytical evaluation of Er:YAG laser cleaning tests on a nineteenth century varnished painting
Abstract
This paper aims to evaluate the Er:YAG laser efficacy to safely thin a varnish on a modern 19th century oil painting. Tests were carried out under single and multiple laser scans directly on the surface (dry) or after pre-wetting with deionised water (DIW) and a non-ionic surfactant (Tween 20), fluence ranges of 0.56-2.40 J/cm2 and 100 sec pulse duration. Microscope glass coverslips were placed on the painting surface during irradiation to collect the condensed resin fragments that were extracted from the varnished surfaces. Spectral clusterisation maps of Multispectral Imaging (MSI) data of the irradiated surface supported the evaluation of the procedure. Further evaluation was performed by stereomicroscopy and colourimetry. Fourier Transform Infrared spectroscopy (FTIR) and Pyrolysis Gas Chromatography / Mass Spectrometry (Py-GC/MS) analysis indicated that the varnish resin was dammar. The collected resin fragments were analysed by FT-IR. The results showed that the resin did not degrade even at the highest level of fluence employed, thereby allowing a subsequent analytical evaluation.