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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/7924

    Título
    UV femtosecond laser cleaning of encrusted historical stained-glasses
    Autor
    Maingi, Evan Maina
    Alonso Abad, Mª PilarAutoridad UBU Orcid
    Fuente Leis, Germán F. de la
    Dubernet, Stéphan
    Chapoulie, Rémy
    Vally, Elodie
    Angurel Lámban, Luis Alberto
    Publicado en
    Journal of Cultural Heritage. 2023, V. 61, p. 100-108
    Editorial
    Elsevier
    Fecha de publicación
    2023-04
    ISSN
    1296-2074
    DOI
    10.1016/j.culher.2023.03.005
    Résumé
    Laser irradiation enables the removal of unwanted surface deposits from different materials in a safe and controllable manner. Laser parameters should be carefully selected to achieve the removal of the target contaminants 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 was used 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.
    Palabras clave
    Conservation
    Cultural heritage
    Stained-glass
    Ultra-short pulse lasers
    Laser cleaning
    Materia
    Arqueología
    Archaeology
    Tecnología
    Technology
    Artes decorativas-Burgos
    Decorative arts-Burgos
    URI
    http://hdl.handle.net/10259/7924
    Versión del editor
    https://doi.org/10.1016/j.culher.2023.03.005
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    Maingi-jch_2023.pdf
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