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K. Dickmann C. Fotakis J.F. Asmus (Eds.) Lasers in the Conservation of Artworks LACONA V Proceedings, Osnabru¨ck, Germany, Sept. 15–18, 2003 With298Figuresand54Tables 123 ProfessorDr.KlausDickmann LasercenterFHMu¨nster,Stegerwaldstr.39,48565Steinfurt,Germany E-mail:[email protected] ProfessorDr.CostasFotakis FO.R.T.H./I.E.S.L.,P.O.Box1527,VassilikaVouton,71110Heraklion,Crete/Greece E-mail:[email protected] ProfessorDr.JohnF.Asmus UniversityofCalifornia,InstituteforPureandAppliedPhysicalSciences SanDiego,9500GilmanDrive,LaJolla,CA92093-0360,USA E-mail:[email protected] ISSN0930-8989 ISBN3-540-22996-5SpringerBerlinHeidelbergNewYork LibraryofCongressControlNumber:2004116520 This work is subject to copyright. 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Typesettingbytheauthors/editors Coverconcept:eStudioCalamarSteinen Coverproduction:design&productionGmbH,Heidelberg Printedonacid-freepaper SPIN:10952498 57/3141/ad 543210 Preface The 5th International Conference LACONA V (Lasers in the Conservation of Artworks) was held in Osnabru¨ck (Germany) in September 2003. LACONA’s aim is to provide an opportunity for scientists from universi- tiesandresearchlaboratoriestomeetandespeciallyforrestorers,arthistori- ansandlasermanufacturerstopresentanddiscussnewresultsconcerningthe applicationoflasertechnologyintherestorationofartworks.Thisconference alsooffersopportunitiestoinitiatecooperativeprojectsbetweenprofessionaly from the various fields of science and its application. In1995thisideawasrealizedforthefirsttimebyProfessorCostasFotakis from Foundation for Research and Technology Hellas Institute (FO.R.T.H.) inCrete,Greece,where100internationalattendeestookpartinLACONAI. Since then the field of “Lasers in the Conservation of Artworks” has gained considerably in importance. As a consequence a large number of nationally (e.g. DBU, Germany) and internationally funded (e.g. EU) research projects have been carried out. Furthermore international working groups were es- tablished (e.g. COST G7). There has also been a substantial increase in publications concerning laser application in restoration since LACONA I. It has turned out that a close cooperation between scientists and restorers seems to be of utmost importance for the future of laser applications in art- workrestoration.BasedonthesuccessofLACONAI,otherLACONAswere organized: 1997 in Liverpool, 1999 in Florence and 2001 in Paris. LACONA V took place at the modern “Center for Environment Com- munication (ZUK) of the German Federal Environment Foundation (DBU)” fromSeptember15–18,2003.Thereweremorethan80presentations(50oral, 30 posters) given by attendees coming from all over the world. While there wasadistinctdecreaseinpresentationscomparedtopreviousLACONAsfor specific topics (e.g. laser cleaning of stone) the number of contributions in other fields such as analyses and diagnostics strongly increased. This is also true for online-monitoring during laser cleaning. I am grateful to the members of the Scientific Committee as well as to theEditorialCommitteefortheiradviceandsupportinreviewingallpapers. I also acknowledge the sponsorship by the “German Federal Environment Foundation (DBU)” and the administrative supportof the“Center for Envi- ronment Communication (ZUK)”. VI Preface I would like to give my thanks toDr.John F.Asmus,the pioneer in laser cleaning,andtoProfessorCostasFotakis,founderofLACONA,forthemany stimulating discussions and their assistance to LACONA V. Steinfurt, August 2004 Klaus Dickmann Contents Art in the Service of Science J.F. Asmus .................................................... 1 Part I Laser Cleaning of Paper Laser Cleaning Investigations of Paper Models and Original Objects with Nd:YAG and KrF Laser Systems H. Scholten, D. Schipper, F.J. Ligterink, J.L. Pedersoli Jr., P. Rudolph, W. Kautek, J.B.G.A. Havermans, H.A. Aziz, B. van Beek, M. Kraan, P. van Dalen, V. Quillet, S. Corr, H.Y. Hua-Stro¨fer . 11 Anti-Fungal Laser Treatment of Paper: A Model Study with a Laser Wavelength of 532nm E. Pilch, S. Pentzien, H. M¨adebach, W. Kautek..................... 19 Observation of the Post-Processing Effects due to Laser Cleaning of Paper K. Ochocin´ska-Komar, A. Kamin´ska, M. Martin, G. S´liwin´ski........ 29 The Post-Processing Effects due to Pulsed Laser Ablation of Paper A. Kaminska, M. Sawczak, M. Cieplnski, G. Sliwinski ............... 35 Laser Cleaning of Pressure Sensitive Tapes on Paper J.H. Scholten, P. van Dalen, S. Corr, P. Rudolph, J.B.G.A. Havermans, H.A. Aziz, F.J. Ligterink..................... 43 Chemistry of Parchment-Laser Interaction L. Puchinger, S. Pentzien, R. Koter, W. Kautek .................... 51 VIII Contents Part II Laser Cleaning of Metal Femtosecond Laser Cleaning of Metallic Cultural Heritage and Antique Artworks T. Burmester, M. Meier, H. Haferkamp, S. Barcikowski, J. Bunte, A. Ostendorf ................................................... 61 Archaeological Ironwork: Removal of Corrosion Layers by Nd:YAG-Laser K. Dickmann, J. Hildenhagen, J. Studer, E. Mu¨sch ................. 71 Laser Cleaning of Metal Surface – Laboratory Investigations P. Mottner, G. Wiedemann, G. Haber, W. Conrad, A. Gervais ....... 79 1320nm Range Nd:YAG-Laser in Restoration of Artworks Made of Bronze and Other Metals S. Batishche, A. Kouzmouk, H. Tatur, T. Gorovets, U. Pilipenka, V. Ukhau ..................................................... 87 Surface Cleaning of Iron Artefacts by Lasers Y.S. Koh, I. Sa´rady ............................................. 95 Part III Laser Cleaning Miscellaneous Experimental and Theoretical Indications on Laser Cleaning J. Marczak, K. Jach, A. Sarzynski, R. Ostrowski.................... 103 Er:YAG Laser Applications on Marble and Limestone Sculptures with Polychrome and Patina Surfaces A. deCruz, M.L. Wolbarsht, R.A. Palmer, S.E. Pierce, E. Adamkiewicz 113 Lasers Cleaning of Patrimonial Plasters E. Tanguy, N. Huet, A. Vin¸cotte.................................. 125 Overpaint Removal on a Gilded Wooden Bas-Relief Using a Nd:YAG Laser at 1.064µm M. Strzelec, J. Marczak, A. Koss, R. Szambelan .................... 133 Pulsed Laser Cleaned Natural History Specimens with Reference to the Removal of Conductive Coatings L. Cornish, G. Miller, C. Jones................................... 139 Contents IX Laser Cleaning Studies of Hard Insoluble Aluminosilicate Crusts on Minoan (LM IIIC) Pottery S. Chlouveraki, P. Pouli, K. Melessanaki, K. Zervaki, M. Yiannakaki.. 143 Laser Removal of Protective Treatments on Limestone M. Go´mez-Heras, E. Rebollar, M. Alvarez de Buergo, M. Oujja, R. Fort, M. Castillejo ........................................... 149 Comparison of Cleaning Methods for Stained Glass Windows H. R¨omich, P. Mottner, J. Hildenhagen, K. Dickmann, G. Hettinger, F. Bornschein .................................................. 157 Results of Nd:YAG Laser Renovation of Decorative Ivory Jug M. Strzelec, J. Marczak, R. Ostrowski, A. Koss, R. Szambelan........ 163 Part IV Case Studies The Conservation Intervention on the Porta della Mandorla S. Siano, A. Giusti, D. Pinna, S. Porcinai, M. Giamello, G. Sabatini, R. Salimbeni ................................................... 171 The Capability of the Laser Application for Selective Cleaning and the Removal of Different Layers on Wooden Artworks G. Wiedemann, K. Pueschner, H. Wust, A. Kempe ................. 179 The Pilot Restoration Yard of the Church of San Frediano in Pisa: Results of a Multidisciplinary Study C. Baracchini, R. Pini, F. Fabiani, M. Ciafaloni, S. Siano, R. Salimbeni, G. Sabatini, M. Giamello, M. Franzini, M. Lezzerini, M. Spampinato, F. Gravina, F. Andreazzoli ........................ 191 A Bronze Age Pre-Historic Dolmen: Laser Cleaning Techniques of Paintings and Graffiti (The Bisceglie Dolmen Case Study) G. Daurelio .................................................... 199