Título
Comparative study of ornamental granite cleaning using femtosecond and nanosecond pulsed lasers
Autor(es)
Palabras clave
Granite
Femtosecond lasers
Nanosecond laser
Biological crust
Laser cleaning
Fecha de publicación
2013-08
Citación
Rivas, T., Lopez, A. J., Ramil, A., Pozo, S., Fiorucci, M. P., Silanes, M. E. L. de, García, A., Aldana, J. R. V. de, Romero, C., & Moreno, P. (2013). Comparative study of ornamental granite cleaning using femtosecond and nanosecond pulsed lasers. Laser materials processing for micro and nano applications, E-MRS 2012 Symposium V, 278, 226-233. https://doi.org/10.1016/j.apsusc.2012.12.038
Resumen
Granite has been widely used as a structural and ornamental element in public works and buildings. In damp climates it is almost permanently humid and its exterior surfaces are consequently biologically colonized and blackened We describe a comparative analysis of the performance of two different laser sources in removing biological crusts from granite surfaces: nanosecond Nd:YVO4 laser (355 nm) and femtosecond Ti:Sapphire laser at its fundamental wavelength (790 nm) and second harmonic (395 nm). The granite surface was analyzed using scanning electron microscopy, attenuated total reflection – Fourier transform infrared spectroscopy and profilometry, in order to assess the degree of cleaning and to characterize possible morphological and chemical changes caused by the laser sources.
URI
ISSN
0169-4332
DOI
10.1016/j.apsusc.2012.12.038
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