Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/3556D00B-C667-4A05-BAD5-6AA94985936F | ||
| Year | 2003 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | P. Maravelaki-Kalaitzaki, V. Zafiropulos, P. Pouli, D. Anglos, C. Balas, R. Salimbeni, S. Siano, R. Pini, “Short Free Running Nd:YAG laser to clean different encrustation on Pentelic marble: procedure and evaluation of the effects," J. Cult. Herit.,vol. 4, no. 1s, pp. 77-82, Jan. 2003. doi: 10.1016/S1296-2074(02)01151-2 https://doi.org/10.1016/S1296-2074(02)01151-2 | ||
| Appears in Collections |
On ancient Greek monuments of Pentelic marble, environmentally induced encrustation (black dendritic and thin) along with layers with ancient treatments (patina) were irradiated with a Nd:YAG laser system operating at the fundamental mode (λ = 1064 nm) with td = 20 μs (short free running Nd:YAG laser). Laser experiments were coupled with the spraying of small quantities of distilled water on the encrustation before the irradiation. The effects of the laser-assisted cleaning were investigated using thin section analysis, optical microscopy, scanning electron microscopy coupled to energy dispersive X-ray analysis, infrared spectroscopic analysis, and X-ray diffraction analysis, as well as color measurements and imaging analysis using multi-spectral imaging. Based on the results, the main evaluation criteria were achieved for the application of the short free running Nd:YAG laser system for cleaning purposes. Multi-spectral imaging enables the evaluation of color and textural changes and, therefore, can be considered as an appropriate tool for the in situ monitoring of the cleaning process.
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