doi:10.1016/j.matlet.2023.134028engRahman, Md. AshiqurFuente Leis, Germán Francisco de laCarretero, José MiguelAlonso Abad, Mª PilarRuiz Navazo, MartaAlonso Alcalde, RodrigoChapoulie, RémySchiavon, NickAngurel, Luis A.Ultrashort pulsed Femtosecond UV laser for selective cleaning of significant Cretaceous flintsART-2023-132957This work reports on studies aimed to evaluate the utilization of ultrashort 238 fs (fs) pulsed UV laser emission at 343 nm for eliminating colored crusts and surface deposits on significant Cretaceous flint surfaces, in an attempt to safeguard its aesthetic appearance and archaeological value. The results indicate that fs UV lasers may be an ideal, non-contact tool for selective surface cleaning of sensitive archaeological artefacts, since they enable contaminant desorption while avoiding photothermal damage.2023http://zaguan.unizar.es/record/12526310.1016/j.matlet.2023.134028http://zaguan.unizar.es/record/125263oai:zaguan.unizar.es:125263info:eu-repo/grantAgreement/ES/DGA/T54-20Rinfo:eu-repo/grantAgreement/EC/H2020/766311/EU/European Doctorate in ARchaeological and Cultural Heritage MATerials science/ED-ARCHMATThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 766311-ED-ARCHMATMATERIALS LETTERS 338 (2023), 134028 [5 pp.]by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess