First-time observation of Mastro Giorgio masterpieces by means of non-destructive techniques

Padeletti, G.; Ingo, G. M.; Bouquillon, Anne; Pagès-Camagna, Sandrine; Aucouturier, Marc; Roehrs, Stefan; Fermo, P.

doi:10.1007/s00339-006-3549-5

Cited by 50 publications

(66 citation statements)

References 13 publications

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“…17,18 Similar procedures have been employed for fitting the RBS data from historical lusters. [32][33][34] To determine the luster depth composition profiles, a sequence of layers with varying silver and/or copper content was modeled. The depth concentration profiles of the luster layers were fitted using between 10 and 15 layers of varying thickness and silver/copper content.…”

Section: Materials and Techniquesmentioning

confidence: 99%

Composition, nanostructure, and optical properties of silver and silver-copper lusters

Pradell

Pavlov

Gutiérrez

et al. 2012

Journal of Applied Physics

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Influence of alloy inhomogeneities on the determination by Raman scattering of composition and strain in Si1-xGex/Si(001) layers J. Appl. Phys. 112, 023512 (2012) Plasmon coupling in circular-hole dimers: From separation-to touching-coupling regimes J. Appl. Phys. 112, 013113 (2012) Correlation between reflectivity and resistivity in multi-component metallic systems Appl. Phys. Lett. 101, 011902 (2012) Ultrathin metallic coatings can induce quantum levitation between nanosurfaces Appl. Phys. Lett. 100, 253104 (2012) Transmittance and optical constants of Sr films in the 6-1220eV spectral range J. Appl. Phys. 111, 113533 (2012) Additional information on J. Appl. Phys. Lusters are composite thin layers of coinage metal nanoparticles in glass displaying peculiar optical properties and obtained by a process involving ionic exchange, diffusion, and crystallization. In particular, the origin of the high reflectance (golden-shine) shown by those layers has been subject of some discussion. It has been attributed to either the presence of larger particles, thinner multiple layers or higher volume fraction of nanoparticles. The object of this paper is to clarify this for which a set of laboratory designed lusters are analysed by Rutherford backscattering spectroscopy, transmission electron microscopy, x-ray diffraction, and ultraviolet-visible spectroscopy. Model calculations and numerical simulations using the finite difference time domain method were also performed to evaluate the optical properties. Finally, the correlation between synthesis conditions, nanostructure, and optical properties is obtained for these materials. V C 2012 American Institute of Physics. [http://dx

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Section: Materials and Techniquesmentioning

confidence: 99%

Composition, nanostructure, and optical properties of silver and silver-copper lusters

Pradell

Pavlov

Gutiérrez

et al. 2012

Journal of Applied Physics

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“…4͑b͒ shows that a layer close to the surface is Pb depleted, due to the volatilization of Pb during the luster production; this has already been observed in the literature. 24 In the region of channels higher than 870 ͑corre-sponding approximately to a depth of about 1.2 m͒, the lead signal begins to overlap with the Cu signal, and the lead content cannot be well determined. The average copper composition calculated for different samples for a depth of 3 m ranges from 1.5 to 2.6 at.…”

Section: -5mentioning

confidence: 99%

“…The Si enriched and Pb depleted surface layers have also been observed in the study of ancient lusters. 5,24 The average copper composition calculated for a depth of 3 m, is 0.8 at. % Cu while the average copper concentration as determined by electron microprobe is 1.8͑1.2͒ at.…”

Section: -5mentioning

confidence: 99%

Metallic and nonmetallic shine in luster: An elastic ion backscattering study

Pradell

Climent‐Font

Molerà

et al. 2007

Journal of Applied Physics

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Luster is a metal glass nanocomposite layer first produced in the Middle East in early Islamic times ͑9th AD͒ made of metal copper or silver nanoparticles embedded in a silica-based glassy matrix. These nanoparticles are produced by ion exchange between Cu + and Ag + and alkaline ions from the glassy matrix and further growth in a reducing atmosphere. The most striking property of luster is its capability of reflecting light like a continuous metal layer and it was unexpectedly found to be linked to one single production parameter: the presence of lead in the glassy matrix composition. The purpose of this article is to describe the characteristics and differences of the nanoparticle layers developed on lead rich and lead free glasses. Copper luster layers obtained using the ancient recipes and methods are analyzed by means of elastic ion backscattering spectroscopy associated with other analytical techniques. The depth profile of the different elements is determined, showing that the luster layer formed in lead rich glasses is 5-6 times thinner and 3-4 times Cu richer. Therefore, the metal nanoparticles are more densely packed in the layer and this fact is related to its higher reflectivity. It is shown that lead influences the structure of the metal nanoparticle layer through the change of the precipitation kinetics.

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“…The technique found a new application during the Italian Renaissance (15 th and 16 th centuries) where Deruta and Gubbio became the most famous production centres of lustred glazed majolica (Padeletti et al 2006). The main production centres with chronological data are summarized in the figure 2.…”

Section: Historical Contextmentioning

confidence: 99%

“…The association of particle induced X-ray emission (PIXE) and elastic Rutherford backscattering spectrometry (RBS) allowed them to obtain significant data concerning the glassy matrix composition and the nature and the depth distribution of nanoparticles for a number of lustre ceramics, including valuable museum objects (DarqueCeretti et al 2005;Padeletti, Ingo et al 2006;Chabanne et al 2008;. Whereas PIXE gives the chemical composition of the glassy matrix, RBS can provide detailed depth information.…”

Section: Nanoparticle Layermentioning

confidence: 99%

Nanoparticles in Ancient Materials: The Metallic Lustre Decorations of Medieval Ceramics

Sciau¹

2012

The Delivery of Nanoparticles

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First-time observation of Mastro Giorgio masterpieces by means of non-destructive techniques

Cited by 50 publications

References 13 publications

Composition, nanostructure, and optical properties of silver and silver-copper lusters

Composition, nanostructure, and optical properties of silver and silver-copper lusters

Metallic and nonmetallic shine in luster: An elastic ion backscattering study

Nanoparticles in Ancient Materials: The Metallic Lustre Decorations of Medieval Ceramics

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