Daniela Comelli
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View article: Advanced X-ray techniques to study the alteration of pigments in paintings
Advanced X-ray techniques to study the alteration of pigments in paintings Open
The application of X-ray methods (using conventional sources or synchrotron radiation) for investigating degradation phenomena in paintings has significantly increased in the last two decades. This rise is due to their ability to provide s…
View article: Rapid chromatic alteration of Street Art: Mechanisms of deterioration of the painting materials of the 20 years of Freedom and Democracy mural
Rapid chromatic alteration of Street Art: Mechanisms of deterioration of the painting materials of the 20 years of Freedom and Democracy mural Open
Over the last few years, contemporary mural paintings have gained significant importance as both artistic and social expressions within urban environments. The study focuses on the characterization of the faded painting materials from a ca…
View article: A non-invasive multimodal approach to understand plastic degradation in design objects
A non-invasive multimodal approach to understand plastic degradation in design objects Open
This study explores the early detection of degradation in plastic-based cultural heritage objects using non-invasive spectroscopic techniques. The results on artificially aged ABS specimens revealed degradation markers at low exposure leve…
View article: Integrating innovative Spatial and Spectral Data Fusion strategies in Hyperspectral Imaging for Cultural Heritage
Integrating innovative Spatial and Spectral Data Fusion strategies in Hyperspectral Imaging for Cultural Heritage Open
The study of cultural heritage (CH) objects benefits greatly from non-invasive techniques like hyperspectral imaging (HSI), which enables material identification and spatial mapping. Due to the heterogeneous composition of CH artifacts, co…
View article: Multimodal HSI Combined with Multiblock Data Fusion: A New Tool for the Study of Time-Dependent Alteration Processes in Dyed Textiles
Multimodal HSI Combined with Multiblock Data Fusion: A New Tool for the Study of Time-Dependent Alteration Processes in Dyed Textiles Open
The present study describes an innovative approach for the study of time-dependent alteration processes. It combines an advanced hyperspectral imaging (HSI) system, to collect visible reflectance and fluorescence spectral data sets sequent…
View article: Integrating multimodal Raman and photoluminescence microscopy with enhanced insights through multivariate analysis
Integrating multimodal Raman and photoluminescence microscopy with enhanced insights through multivariate analysis Open
This paper introduces a novel multimodal optical microscope, integrating Raman and laser-induced photoluminescence (PL) spectroscopy for the analysis of micro-samples relevant in Heritage Science. Micro-samples extracted from artworks, suc…
View article: Enhancing hyperspectral imaging through macro and multi-modal capabilities
Enhancing hyperspectral imaging through macro and multi-modal capabilities Open
Hyperspectral imaging (HSI) has emerged as an effective tool to obtain spatially resolved spectral information of artworks by combining optical imaging with spectroscopy. This technique has proven its efficacy in providing valuable informa…
View article: Multivariate analysis on fused hyperspectral datasets within Cultural Heritage field
Multivariate analysis on fused hyperspectral datasets within Cultural Heritage field Open
This work introduces a novel method to multivariate analysis applied to fused hyperspectral datasets in the field of Cultural Heritage (CH). Hyperspectral Imaging is a well-established approach for the non-invasive examination of artworks,…
View article: LEGO® under stage light: Studying the ABS light-stability through a complementary multi-analytical approach
LEGO® under stage light: Studying the ABS light-stability through a complementary multi-analytical approach Open
Throughout the 20th Century, plastics found extensive use in fashion, art, and design due to their versatile nature. However, their degradation over time poses challenges, impacting material integrity, particularly in museum collections. T…
View article: Characterization of photoluminescent and Raman properties of ultramarine blue pigment variants with a novel multimodal approach
Characterization of photoluminescent and Raman properties of ultramarine blue pigment variants with a novel multimodal approach Open
Ultramarine Blue (UB) pigment, derived from lapis lazuli, holds a significant place in the history of late medieval and Renaissance Europe, owing to its unusually bright colour and stability. Its prohibitive price, which equalled that of g…
View article: Use of hyperspectral imaging to monitor the effectiveness of plasma-generated atomic oxygen for non-contact cleaning of indigo dyed silk
Use of hyperspectral imaging to monitor the effectiveness of plasma-generated atomic oxygen for non-contact cleaning of indigo dyed silk Open
This study explores the use of hyperspectral imaging (HSI) to monitor the effectiveness of plasma-generated atomic oxygen (AO) treatment for non-invasive cleaning of cultural heritage object. Silk samples dyed with indigo blue, including t…
View article: Multi-scalar and multi-modal wide-field imaging of artworks with a novel hyperspectral system
Multi-scalar and multi-modal wide-field imaging of artworks with a novel hyperspectral system Open
Hyperspectral imaging (HSI) is a very powerful tool to study artworks in a non-contact way. Nevertheless, typical HSI systems, which rely on spatial-scanning and dispersive spectrometers, suffer from high-light losses and are difficult to …
View article: A study of Cadmium Yellow paints from Joan Miró’s paintings and studio materials preserved at the Fundació Miró Mallorca
A study of Cadmium Yellow paints from Joan Miró’s paintings and studio materials preserved at the Fundació Miró Mallorca Open
The deterioration of cadmium yellow paints in artworks by Joan Miró (1893–1983) and from painting materials from his studios in Mallorca (Spain) was investigated for the first time. Artworks showed discolouration and chalking of paints con…
View article: Hyperspectral imaging of stone biofilms at the macroscopic scale
Hyperspectral imaging of stone biofilms at the macroscopic scale Open
The ability to observe traces of biological material on buildings and stone artworks is of particular importance in understanding how to best deal with them and maybe, in the future, even make use of biofilms for conservation science. We h…
View article: X-rays investigations for the characterization of two 17th century brass instruments from Nuremberg
X-rays investigations for the characterization of two 17th century brass instruments from Nuremberg Open
A recent finding at the Castello Sforzesco in Milan of two brass natural horns from the end of the 17th century and assigned to the Haas family from Nuremberg brought to light new information about this class of objects. The instruments we…
View article: New Opportunities Offered by the ESRF to the Cultural and Natural Heritage Communities
New Opportunities Offered by the ESRF to the Cultural and Natural Heritage Communities Open
For the past 20 years, the community of heritage scientists has frequently exploited the synchrotron radiation-based techniques offered at the European Synchrotron Radiation Facility (ESRF), Grenoble, France [1]. X-ray imaging techniques (…
View article: Application of Synchrotron Radiation-Based Micro-Analysis on Cadmium Yellows in Pablo Picasso's <i>Femme</i>
Application of Synchrotron Radiation-Based Micro-Analysis on Cadmium Yellows in Pablo Picasso's <i>Femme</i> Open
The cultural heritage community is increasingly exploring synchrotron radiation (SR) based techniques for the study of art and archaeological objects. When considering heterogeneous and complex micro-samples, such as those from paintings, …
View article: The “Historical Materials BAG”: A New Facilitated Access to Synchrotron X-ray Diffraction Analyses for Cultural Heritage Materials at the European Synchrotron Radiation Facility
The “Historical Materials BAG”: A New Facilitated Access to Synchrotron X-ray Diffraction Analyses for Cultural Heritage Materials at the European Synchrotron Radiation Facility Open
The European Synchrotron Radiation Facility (ESRF) has recently commissioned the new Extremely Brilliant Source (EBS). The gain in brightness as well as the continuous development of beamline instruments boosts the beamline performances, i…
View article: Performances of a portable Fourier transform hyperspectral imaging camera for rapid investigation of paintings
Performances of a portable Fourier transform hyperspectral imaging camera for rapid investigation of paintings Open
Scientific investigation in the cultural heritage field is generally aimed at the characterization of the constituent materials and the conservation status of artworks. Since the 1990s, reflectance spectral imaging proved able to map pigme…
View article: Time-Resolved Imaging of Femtosecond Laser-Induced Plasma Expansion in a Nitrogen Microjet
Time-Resolved Imaging of Femtosecond Laser-Induced Plasma Expansion in a Nitrogen Microjet Open
We report on the study of ultrafast laser-induced plasma expansion dynamics in a gas microjet. To this purpose, we focused femtosecond laser pulses on a nitrogen jet produced through a homemade De Laval micronozzle. The laser excitation le…
View article: Time-Resolved Imaging of Femtosecond Laser-Induced Plasma Expansion in a Nitrogen Microjet
Time-Resolved Imaging of Femtosecond Laser-Induced Plasma Expansion in a Nitrogen Microjet Open
We report on the study of ultrafast laser-induced plasma expansion dynamics in a gas microjet. To this purpose, we focused femtosecond laser pulses on a nitrogen jet produced through a homemade De Laval micronozzle. The laser excitation le…
View article: A novel photoluminescence hyperspectral camera for the study of artworks
A novel photoluminescence hyperspectral camera for the study of artworks Open
We present the application of a novel hyperspectral camera, based on the Fourier-transform approach, to study the photoluminescence emission from artworks at different spatial scales and emission timescales. The hyperspectral system relies…