A5033732011- Cultural Heritage Materials Analysis
- Building materials and conservation
- Conservation Techniques and Studies
- Medieval Architecture and Archaeology
- Archaeological and Historical Studies
- Calcium Carbonate Crystallization and Inhibition
- X-ray Diffraction in Crystallography
- X-ray Spectroscopy and Fluorescence Analysis
- Wood Treatment and Properties
- Archaeological and Geological Studies
- Historical Studies of Medieval Iberia
- Corrosion Behavior and Inhibition
- Geological and Geophysical Studies Worldwide
- Mineralogy and Gemology Studies
- Historical Art and Architecture Studies
- Cephalopods and Marine Biology
- Wood and Agarwood Research
- Dementia and Cognitive Impairment Research
- Health and Lifestyle Studies
- Libraries, Manuscripts, and Books
- Neurological Disorders and Treatments
- Chemical and Environmental Engineering Research
- Metallurgy and Cultural Artifacts
- Recycling and utilization of industrial and municipal waste in materials production
- Bone Tissue Engineering Materials
Universitat Politècnica de Catalunya
2010-2023
Cidete (Spain)
2006-2020
University of Manchester
2005
Daresbury Laboratory
2003-2005
The European Synchrotron Radiation Facility (ESRF) has recently commissioned the new Extremely Brilliant Source (EBS). gain in brightness as well continuous development of beamline instruments boosts performances, particular terms accelerated data acquisition. This motivated access modes an alternative to standard proposals for beamtime, via "block allocation group" (BAG) mode. Here, we present implemented "historical materials BAG": a community proposal giving 10 institutes opportunity...
A set of laboratory experiments has been developed to determine the nature and importance interaction between clay bodies lead glazes during firing following different thermal paths (firing time temperature, cooling rates) using glaze compositions (illitic, kaolinitic, calcareous clays). It is shown that consists a digestion/diffusion process. This process involves (i) decomposition phases forming body (digestion), (ii) chemical diffusion elements glaze, (iii) formation layer (interface...
Synchrotron radiation Fourier transform infrared (SR-FT-IR) microspectroscopy represents an advance over conventional FT-IR spectroscopy because it gives a higher signal/noise ratio at the highest spatial resolution due to high brightness and collimation of synchrotron radiation. It has been successfully applied study ancient paintings, alteration corrosion layers which are heterogeneous microlayered materials made by complex mixtures organic inorganic compounds. Moreover, attribute allows...
El procés de carbonatació en una pintura al fresc segueix els mateixos processos que sistemes biogènics. S’inicia amb la formació carbonat calci amorf hidratat, CaCO3·nH2O, s’estabilitza a superfície les pintures, tant morters calcítics com dolomítics, i l’interior es transforma calcita, o calcita aragonita quan el morter és dolomític. En l’hidròxid magnesi no reacciona CO2 mentre quedi hidròxid per carbonatar, esdevenint, tant, més reactius llarg termini
Tin oxide (SnO 2 ) particles that are a few hundred nanometers in size and embedded lead glaze act as white opacifier. The insolubility of SnO is responsible for this microstructure. Although it assumed do not react during the formation, we demonstrate development metastable phases prior to fusion PbO‐SiO ‐SnO mixture allows then recrystallize subsequent mixture. recrystallization occurs heating and/or cooling until temperature sufficiently low tin supply exhausted.
Significance Ink, invented in ancient Egypt circa 5,000 y ago, is the established and time-honored medium wherewith humankind commits words to writing. A comprehensive synchrotron-based microanalysis of a considerable corpus Egyptian papyri from Roman period, inscribed with red black inks, reveal hitherto undetected complex composition inks. Highlighted by presence iron, color can be attributed use ocher. Unexpectedly, lead regularly present both inks associated phosphate, sulfate, chloride,...
The scientific investigation of ancient paintings gives a unique insight into painting techniques and their evolution through time geographic location. This study deals with the identification green pigments used by one most important Catalan masters in Gothic times, Jaume Huguet. Other materials have also been characterized means conventional such as optical microscopy, scanning electron microscopy Fourier transform infrared spectroscopy. Synchrotron radiation X-ray diffraction has to...
Egyptian blue, which was the first synthetic pigment to be used in antiquity, consists of crystals calcium‐copper tetrasilicate (i.e. cuprorivaite (CaCuSi 4 O 10 )). The physical processes associated with formation blue were investigated by high‐temperature X‐ray diffraction measurements on mixtures quartz, malachite, and calcium carbonate. high‐brilliance, high‐energy radiation ID15B beamline at European Synchrotron Radiation Facility necessary ensure good time/temperature resolution,...
The blue pigments used on altarpieces in the 15th century Catalonia and Crown of Aragon are principally composed azurite mineral. To a lesser extent, lapis lazuli, also mineral origin, was occasionally background areas outlining principal figures, indigo (of vegetal origin) for chromatic preparation layer. Data from several belonging to well-known artists that time analysed by synchrotron radiation X-ray diffraction (SR-XRD), micro-infrared spectroscopy (μ-FTIR), (μSR-FTIR), Raman...
An innovative approach involving a collection of experiments to mimic and assess the different conditions (at selected time-pH-[Mg2+]-humidity) existing during carbonation process in dolomitic mortars is proposed with combination micro-analytical imaging techniques, namely: optical electron microscopy, micro-Fourier-Transform Infrared spectroscopy, Raman spectroscopy synchrotron-based micro X-ray diffraction. The was studied from short time scale long simple aqueous saturated solutions...
Abstract A series of wall paintings dating from the Romanesque period to 16th century were uncovered during restoration projects at church Santa Eulàlia Unha in Val d'Aran. This study centres on use complementary spectroscopic techniques examine comprehensively pigments, binders and other materials associated with these mural paintings. These include Raman microscopy, far mid‐Fourier transform infrared (FTIR) spectroscopy both synchrotron radiation (SR), as well optical microscopy scanning...
Precise microanalytical techniques are essential in many fields such as cultural heritage materials, showing complex layered microstructures containing a wide range of materials diverse nature and hardness. Noninvasive sample manipulation preparation is required to avoid, much possible, contamination, which may strongly limit the identification. The method proposed consists application thin gold or carbon protecting layers before embedding samples synthetic resin for microtoming. validity...
The resin extracted from the species of Pinus genus (Pinaceae family) is a widely used material. Primarily, resins are made up two types diterpenoids: abietanes and pimaranes. Their composition changes with aging, affecting their chemical physical properties; however, that occur during aging not yet fully known. Understanding evolution pimaranes aged essential to make most this substance its derivatives. A systematic study Raman complemented infrared (IR) spectroscopy was carried out. This...
Micro-Infrared Spectroscopy (μSR-FTIR) and X-ray diffraction (μSR-XRD) with synchrotron light, Gas Chromatography/Mass Spectrometry (CG/MS), Optical Microscopy (OM) Scanning Electron (SEM/EDS) were used to obtain the distribution of calcium salts low molecular weight organic acids (LMWOA) in micro-layered micro-samples.