Ultrashort pulsed laser ablation of granite for stone conservation

Brand, Julia; Rodé, A. V.; Madden, Steve; Wain, Alison; King, P. L.; Rapp, Ludovic

doi:10.1016/j.optlastec.2022.108057

Cited by 16 publications

(2 citation statements)

References 42 publications

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“…For steel it was determined at 0.25 J cm −2 [56,87,88]. For the stones, the ablation threshold of Moruya granite was found to be at 1.1 J cm −2 , above which morphological damage started on biotite grains [89], for sandstone at 0.40 J cm −2 , above which discoloration started, and for marble at 1.30 J cm −2 . Ideally, the cleaning process should be undertaken while keeping the laser fluence below the damage threshold of the underlying substrate, which will avoid the removal of original materials and potential undesirable side effects.…”

Section: Femtosecond Pulse Laser Systemmentioning

confidence: 99%

Towards safe and effective femtosecond laser cleaning for the preservation of historic monuments

et al. 2023

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We explore femtosecond laser cleaning of materials used in the construction of historic monuments, such as stone and steel covered in typical contaminants caused by harsh environments that may be found in urban areas. We address the cleaning of these materials from a conservation perspective, taking as examples the preservation and cleaning of iconic structures such as the steel and the granite of the Sydney Harbour Bridge, Hawkesbury sandstone, a popular building material of a variety of monuments in Sydney (Australia), Makrana marble taken from the Soami Bagh Samadh temple of Agra in India, and also graffiti removal. We demonstrate that femtosecond laser pulses can clean a range of different contaminants such as biofilm, environmental soiling, rust, and spray paints, while preserving the integrity of the underlying substrates. Femtosecond laser cleaning is a fast and effective method and a safer alternative to lasers with longer pulse durations for the preservation of historic monuments.

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Section: Femtosecond Pulse Laser Systemmentioning

confidence: 99%

Towards safe and effective femtosecond laser cleaning for the preservation of historic monuments

et al. 2023

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“…Laser ablation is a method of separating layers of material by treating its surface with high-energy quanta of laser radiation [57]. It is one of the most widely used methods for the top-down production of carbon nanomaterials.…”

Section: Laser Ablation Techniquementioning

confidence: 99%

Carbon Dots—Types, Obtaining and Application in Biotechnology and Food Technology

Szczepankowska,

Khachatryan,

Khachatryan

et al. 2023

IJMS

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Materials with a “nano” structure are increasingly used in medicine and biotechnology as drug delivery systems, bioimaging agents or biosensors in the monitoring of toxic substances, heavy metals and environmental variations. Furthermore, in the food industry, they have found applications as detectors of food adulteration, microbial contamination and even in packaging for monitoring product freshness. Carbon dots (CDs) as materials with broad as well as unprecedented possibilities could revolutionize the economy, if only their synthesis was based on low-cost natural sources. So far, a number of studies point to the positive possibilities of obtaining CDs from natural sources. This review describes the types of carbon dots and the most important methods of obtaining them. It also focuses on presenting the potential application of carbon dots in biotechnology and food technology.

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Femtosecond Laser Cleaning: A Green Technology for the Removal of Antifouling Paint on Marine GFRP Composites

Moreno,

Pardiñas,

Lamas

et al. 2024

Springer Series on Naval Architecture, Marine Engineering, Shipbuilding and Shipping

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Ultrashort pulsed laser ablation of granite for stone conservation

Cited by 16 publications

References 42 publications

Towards safe and effective femtosecond laser cleaning for the preservation of historic monuments

Towards safe and effective femtosecond laser cleaning for the preservation of historic monuments

Carbon Dots—Types, Obtaining and Application in Biotechnology and Food Technology

Femtosecond Laser Cleaning: A Green Technology for the Removal of Antifouling Paint on Marine GFRP Composites

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