RT info:eu-repo/semantics/article
T1 UV femtosecond laser cleaning of encrusted historical stained-glasses
A1 Maingi, Evan Maina
A1 Alonso Abad, Mª Pilar
A1 Fuente Leis, Germán F. de la
A1 Dubernet, Stéphan
A1 Chapoulie, Rémy
A1 Vally, Elodie
A1 Angurel Lámban, Luis Alberto
K1 Conservation
K1 Cultural heritage
K1 Stained-glass
K1 Ultra-short pulse lasers
K1 Laser cleaning
K1 Arqueología
K1 Archaeology
K1 Tecnología
K1 Technology
K1 Artes decorativas-Burgos
K1 Decorative arts-Burgos
AB Laser irradiation enables the removal of unwanted surface deposits from different materials in a safe andcontrollable manner. Laser parameters should be carefully selected to achieve the removal of the targetcontaminants without inducing damage to the substrate. Ultra-short pulse lasers have opened new opportunities for safe and controlled decontamination of cultural heritage materials because the thickness of material that is affected by the laser is limited. In this study, an ultraviolet femtosecond pulsed laser wasused for the removal of unwanted encrustation formed on the surface of an historical colourless stainedglass sample from the Cuenca Cathedral in Spain. One of the sides of this glass exhibits a reddish-brown grisaille that also has to be preserved. A laser cleaning process has been designed to avoid heat accumulation while controlling the thickness of ablated material. In this context, a multi-step process was selected in order to be able to eliminate, in a controlled way, the crust layer without damaging the grisaille layer, or the glass substrate. In this case, laser irradiation in beam scanning mode with a pulse repetition frequency of 10 kHz proved to be effective for the safe cleaning of the glass. The latter was analysed before and after laser cleaning by optical and confocal microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray fluorescence, and Raman spectroscopy, confirming that the crust layer was effectively eliminated without damaging the surface.
PB Elsevier
SN 1296-2074
YR 2023
FD 2023-04
LK http://hdl.handle.net/10259/7924
UL http://hdl.handle.net/10259/7924
LA eng
NO This work was supported by H2020-MSCA-ITN-EJD/ED-ARCHMAT action under the Marie Sklodowska-Curie grant agreement no. 766311. Partial support is obtained from Gobierno de Aragón (research group T54_20R). The use of Servicio General de Apoyo a la Investigación at the University of Zaragoza is acknowledged. This work has been performed in the framework of the Unidad Asociada de I+D+I al CSIC “Vidrio y Materiales del Patrimonio Cultural (VIMPAC)”, by INMA (CSIC-University of Zaragoza) and University of Burgos.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024