Novel approach to the microscopic inspection during laser cleaning treatments of artworks

被引:17
|
作者
Cacciari, I. [1 ]
Ciofini, D. [1 ]
Mascalchi, M. [1 ]
Mencaglia, A. [1 ]
Siano, S. [1 ]
机构
[1] Ist Fis Applicata Nello Carrara, I-50019 Florence, Italy
关键词
Laser cleaning; 3D microscopy; Surface roughness; PULSE DURATION; STONE;
D O I
10.1007/s00216-011-5292-9
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The present work focuses on the potential of 3D digital microscopy for assessing micro-morphological features during laser cleaning treatments of artworks. This application requires preliminary optimization studies aimed at defining operative irradiation parameters and practicable degree of cleaning, as well as in situ diagnostic assessments during the restoration work. To this goal, we developed and tested a dedicated 3D digital microscope by implementing the "shape-from-focus" technique. The significant potential of this instrument, which provides textural and chromatic information, was proven for the phenomenological characterization of black crust removal from stones, earthy concretion from bronzes and dark varnish from easel paintings. Comparative measurements using 3D digital microscopy and contact microprofilometry were performed after laser cleaning tests of prepared samples, genuine archaeological bronze artefacts and a stone sculptural element from Florence's Dome. The results achieved demonstrate the effectiveness and reliability of the novel approach and the advantages it provides with respect to alternative techniques, which will allow the methods to be used in the wider restoration community.
引用
收藏
页码:1585 / 1591
页数:7
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