In this work, the effects on the surface structure of traditional and innovative silver treatments was investigated with multiscale profilometry, using scanning conoscopic holography and atomic-force microscopy. 3D surface metrology was carried out using standard areal amplitude parameters and a multiscale approach. Preliminary results are presented, addressing two aspects: 1) the validation of laser optical micro-pro- filometry for the diagnostics of silver objects, which are challenging due to the highly specular surface; 2) the validation of the dry-cleaning treatment based on rubbers, by adding to the previous study the complimentary analysis of the micro-surface. The results obtained on silver mockups confirm that the proposed dry cleaning methods produce surface variations less or similar to traditional methods. The optical micro-profilometry results are of particular significance since this technique is portable with wide field capability, thus allowing an in-situ use and a real monitoring of actual artwork surfaces.

Surface micro-profilometry for the assessment of the effects of traditional and innovative cleaning treatments of silver

Claudia Daffara
;
Nicola Gaburro;Giacomo Marchioro;Alessandro Romeo;
2017-01-01

Abstract

In this work, the effects on the surface structure of traditional and innovative silver treatments was investigated with multiscale profilometry, using scanning conoscopic holography and atomic-force microscopy. 3D surface metrology was carried out using standard areal amplitude parameters and a multiscale approach. Preliminary results are presented, addressing two aspects: 1) the validation of laser optical micro-pro- filometry for the diagnostics of silver objects, which are challenging due to the highly specular surface; 2) the validation of the dry-cleaning treatment based on rubbers, by adding to the previous study the complimentary analysis of the micro-surface. The results obtained on silver mockups confirm that the proposed dry cleaning methods produce surface variations less or similar to traditional methods. The optical micro-profilometry results are of particular significance since this technique is portable with wide field capability, thus allowing an in-situ use and a real monitoring of actual artwork surfaces.
2017
no
Inglese
ELETTRONICO
Esperti anonimi
LACONA XI. Lasers in the Conservation of Artworks
Kraków
20–23 September 2016
Internazionale
contributo
Lasers in the Conservation of Artworks XI. Proceedings of the International Conference LACONA XI
P. Targowski
Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika
Toruń
POLONIA
978-83-231-3875-4
127
140
14
   H2020
optical micro-profilometry, conoscopic holography, silver cleaning, surface analysis, artworks
none
Daffara, Claudia; Gaburro, Nicola; Marchioro, Giacomo; Romeo, Alessandro; Basilissi, Giulia; Cagnini, Andrea; Galeotti, Monica
7
04 Contributo in atti di convegno::04.01 Contributo in atti di convegno
273
info:eu-repo/semantics/conferenceObject
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/982716
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