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22 October 2001 Laser-induced chemical changes in art materials
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Proceedings Volume 4402, Laser Techniques and Systems in Art Conservation; (2001)
Event: Lasers in Metrology and Art Conservation, 2001, Munich, Germany
Lasers can induce subtle and not so subtle changes in material structure. We have found that certain pigments can undergo chemical and crystallographic changes and concomitant color shifts. Minerals and the related pigments may experience a loss of hydroxyl groups or other chemical reordering. The organic component of skeletal, keratinaceous, and cellulosic materials can be pyrolized, ablated, or etched. Polymers can discolor, undergo structural weakening, or be volatilized. A few of these processes have been investigated with regards to changes on ivory and bone, selected pigments and the removal of dye-based pen ink from porous substrates.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Margaret H. Abraham, Stefanie Scheerer, Odile Madden, and Fran Adar "Laser-induced chemical changes in art materials", Proc. SPIE 4402, Laser Techniques and Systems in Art Conservation, (22 October 2001);

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