@article{05129b70bae14135b0b9219bac2c427c,
title = "Femtosecond pulse laser cleaning of spray paint from heritage stone surfaces",
abstract = "We explore the use of femtosecond laser pulses to clean a variety of colors of spray paint from the Moruya granite, a stone with high heritage value that is widely used for monuments and sculptures in Sydney and New South Wales (Australia). The efficiency of the cleaning treatment and the effects on the stone substrate are evaluated using optical microscopy, optical profilometry, Raman spectroscopy, energy-dispersive X-ray spectroscopy, and colorimetry. We demonstrate that femtosecond laser cleans granite without damaging it and without discoloration when the laser fluence is set below the damage threshold of the stone.",
author = "Julia Brand and Alison Wain and Andrei Rode and Steve Madden and Penelope King and Ludovic Rapp",
note = "Funding Information: Acknowledgements. The authors acknowledge Shane Paxton formerly from the Research School of Earth Sciences, and Michael Turner from the Department of Applied Mathematics in the Research School of Physics, for the preparation of stone samples. The authors also acknowledge the Department of Electronic Materials Engineering (EME) for the access to the Raman spectrometer, the facilities, and the scientific and technical assistance of the Australian Microscopy \& Microanalysis Research Facility at the Centre of Advanced Microscopy, at the Australian National University. The research was supported by the Australian Government through the Australian Research Council{\textquoteright}s Linkage Project funding scheme (Project LP180100276) and funding provided by Transport for New South Wales. King was partially supported by DP200100406. Publisher Copyright: {\textcopyright} 2022 Optica Publishing Group.",
year = "2022",
month = aug,
day = "15",
doi = "10.1364/OE.468750",
language = "English",
volume = "30",
pages = "31122--31135",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "17",
}