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• Marczak, J
• Koss, A
• Targowski, P
• Góra, M
• Strzelec, M
• Sarzyński, A
• Skrzeczanowski, W
• Ostrowski, R
• Rycyk, A
• [+] on Google Scholar
• Marczak, J
• Koss, A
• Targowski, P
• Góra, M
• Strzelec, M
• Sarzyński, A
• Skrzeczanowski, W
• Ostrowski, R
• Rycyk, A
• [+] on PubMed
• Marczak, J
• Koss, A
• Targowski, P
• Góra, M
• Strzelec, M
• Sarzyński, A
• Skrzeczanowski, W
• Ostrowski, R
• Rycyk, A

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Sensors 2008, 8(10), 6507-6548; doi:10.3390/s8106507

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Characterization of Laser Cleaning of Artworks

Jan Marczak ¹ , Andrzej Koss ² , Piotr Targowski ³ , Michalina Góra ³ , Marek Strzelec ^1,* , Antoni Sarzyński ¹ , Wojciech Skrzeczanowski ¹ , Roman Ostrowski ¹  and Antoni Rycyk ¹

¹ Institute of Optoelectronics, Military University of Technology, 2 Gen. S. Kaliskiego Str., 00-908 Warsaw, Poland ² Academy of Fine Arts in Warsaw, Wybrzeze Kościuszkowskie 37, 00-379 Warsaw, Poland ³ Institute of Physics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland

* Author to whom correspondence should be addressed.

Received: 7 July 2008; in revised form: 15 August 2008 / Accepted: 21 October 2008 / Published: 23 October 2008

(This article belongs to the Section Physical Sensors)

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Abstract: The main tasks of conservators of artworks and monuments are the estimation and analysis of damages (present condition), object conservation (cleaning process), and the protection of an object against further degradation. One of the physical methods that is becoming more and more popular for dirt removal is the laser cleaning method. This method is non-contact, selective, local, controlled, self-limiting, gives immediate feedback and preserves even the gentlest of relief - the trace of a paintbrush. Paper presents application of different, selected physical sensing methods to characterize condition of works of art as well as laser cleaning process itself. It includes, tested in our laboratories, optical surface measurements (e.g. colorimetry, scatterometry, interferometry), infrared thermography, optical coherent tomography and acoustic measurements for “on-line” evaluation of cleaning progress. Results of laser spectrometry analyses (LIBS, Raman) will illustrate identification and dating of objects superficial layers.

Keywords: Laser cleaning; laser spectroscopy; artwork diagnostics

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