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Proceedings Paper

Laser-induced chemical changes in art materials
Author(s): Margaret H. Abraham; Stefanie Scheerer; Odile Madden; Fran Adar
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Paper Abstract

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.

Paper Details

Date Published: 22 October 2001
PDF: 5 pages
Proc. SPIE 4402, Laser Techniques and Systems in Art Conservation, (22 October 2001); doi: 10.1117/12.445646
Show Author Affiliations
Margaret H. Abraham, Los Angeles County Museum of Art (United States)
Stefanie Scheerer, Los Angeles County Museum of Art (United States)
Odile Madden, Los Angeles County Museum of Art (United States)
Fran Adar, Jobin Yvon Horiba Inc. (United States)

Published in SPIE Proceedings Vol. 4402:
Laser Techniques and Systems in Art Conservation
Renzo Salimbeni, Editor(s)

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