Laser-induced alteration of contaminated papers |
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| Authors: | P. Rudolph F.J. Ligterink J.L. Pedersoli Jr. H. Scholten D. Schipper J.B.G.A. Havermans H.A. Aziz V. Quillet M. Kraan B. van Beek S. Corr H.-Y. Hua-Ströfer J. Stokmans P. van Dalen W. Kautek |
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| Affiliation: | (1) Laboratory for Thin Film Technology, Federal Institute for Materials Research and Testing (BAM), 12200 Berlin, Germany;(2) Netherlands Institute for Cultural Heritage (ICN), P.O. Box 76709, 1070 KA Amsterdam, The Netherlands;(3) Art Innovation b.v., Westermaatsweg 11, 7556 BW Hengelo, The Netherlands;(4) TNO Building and Construction Research (TNO Bouw), P.O. Box 49, 2600 AA Delft, The Netherlands;(5) Atelier Quillet, P.O. Box 10, 17111 Loix en Re, France;(6) Restauratieatelier KOP (Kunst Op Papier), P.O. Box 1221, 6801 BE Arnhem, The Netherlands;(7) Annaghdown, Corrandulla, Co., Galway, Ireland;(8) Hai Yen Institute for Conservation of Works of Art, Karl Kuntz Weg 9, 68163 Mannheim, Germany;(9) Art Conservation b.v., Kon. Wilhelminahaven ZZ 19, 3134 KG Vlaardingen, The Netherlands |
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| Abstract: | Cleaning of paper objects represents one of the most complex cases of laser ablation, since low volumes of dispersed material phases are evaporated while a sensitive and fragile fibrous organic matrix has to be preserved. Conventional chemical and mechanical cleaning methods suffer from the common phenomenon that the foreign matter is diluted into the substrate rather than removed. The application of a laser beam allows highly localized and optically specific interaction. However, the occurrence of extreme temperatures and light intensities may cause irreversible alteration of the paper matrix. Further, incomplete removal and/or chemical conversion of contaminations may result in insufficient cleaning or affect the ageing behaviour. Laser treatments were performed by Q-switched Nd:YAG lasers at three wavelengths (355 nm, 532 nm, and 1064 nm). Papers contaminated with inks and adhesive-tape remnants served as model samples. Multispectral imaging and colorimetric results served to quantify and systematize the results. PACS 81.05.Lg; 81.65.Cf; 81.70.Fy |
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