http://www.cnr.it/ontology/cnr/individuo/prodotto/ID310925
Removal of Verrucaria nigrescens from Carrara marble artefacts using Nd: YAG lasers: comparison among different pulse durations and wavelengths (Articolo in rivista)
- Type
- Label
- Removal of Verrucaria nigrescens from Carrara marble artefacts using Nd: YAG lasers: comparison among different pulse durations and wavelengths (Articolo in rivista) (literal)
- Anno
- 2015-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00339-014-8933-y (literal)
- Alternative label
I Osticioli, M Mascalchi, D Pinna, S Siano (2015)
Removal of Verrucaria nigrescens from Carrara marble artefacts using Nd: YAG lasers: comparison among different pulse durations and wavelengths
in Applied physics. A, Materials science & processing (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- I Osticioli, M Mascalchi, D Pinna, S Siano (literal)
- Pagina inizio
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- http://download.springer.com/static/pdf/593/art%253A10.1007%252Fs00339-014-8933-y.pdf?auth66=1424184307_2341b0c743980497caf1796c0eb69e1b&ext=.pdf (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- IFAC-CNR
Opificio delle Pietre Dure (literal)
- Titolo
- Removal of Verrucaria nigrescens from Carrara marble artefacts using Nd: YAG lasers: comparison among different pulse durations and wavelengths (literal)
- Abstract
- The periodical removal of biodeteriogens is a fundamental need for the preservation of outdoor stone cultural
heritage, which is stimulating significant efforts toward the development of low-impact conservation strategies. In the
present work, the potential of laser removal of Verrucaria nigrescens Pers. from Carrara marble and the evaluation of the
associated biocide effect on the organism residues embedded in the surface texture and through the outer porosities of the
stone substrate were investigated. The fundamental wavelength of Nd:YAG laser (1,064 nm), commonly used in stone
cleaning, and its second harmonic (532 nm) were comparatively tested. The phenomenology of laser treatments carried
out in different irradiation conditions was characterized using optical, epifluorescence, and electron microscopes along with
chlorophyll fluorescence with pulsed amplitude-modulated imaging. The results achieved show that 532 nm can provide
significant advantages with respect to 1,064 nm. The potential of the latter against the biodeteriogens appears rather limited
because of the low optical absorption, whereas the former can allow effective and practicable laser treatments, which disclose
a significant application perspective. (literal)
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