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Papers by Marcello Picollo
DOAJ (DOAJ: Directory of Open Access Journals), May 12, 2016
Proc. 4th Int. Workshop Advanced Infrared Technology and Applications, 1998
Color Research & Application, 2020
2018 First International Workshop on Mobile Terahertz Systems (IWMTS), 2018
The electromagnetic radiation, in the range from IR to X-rays, is widely used in the field of art... more The electromagnetic radiation, in the range from IR to X-rays, is widely used in the field of art conservation and diagnostics. In the last few years a new interest was devoted to the longer wavelengths, in the so called “THz region” of the spectrum, due to the peculiar characteristics of the radiation in this spectral range, that make it ideal for applications in this field [1]: it's low photon energy and its ability to penetrate dielectric materials. This high penetration capabilities were used to demonstrate the possibility to detect artwork hidden under layers of other dielectric materials [2]–[4]. Making use of phase-sensitive techniques it is also possible to get information on the optical properties of the materials under study and to obtain images that include spectroscopic information about the sample [5]. Moreover, radiation in the THz range is strongly reflected and absorbed by water, and this feature can be used to study degradation in mural paintings and mosaics.
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017
THz radiation is strongly absorbed, as well as reflected, by water. This spectral feature can be ... more THz radiation is strongly absorbed, as well as reflected, by water. This spectral feature can be exploited to detect the presence of water under the surface of mural paintings and mosaics. In this study we report on the capability of our 3D reflective THz imaging system to detect water under samples simulating a fresco or a mosaic.
Bollettino Della Societa Geologica Italiana, 1990
Archaeological and Anthropological Sciences, 2017
In the complex and multiform panorama of the Asian heritage, Tibetan Buddhist sacred texts are ta... more In the complex and multiform panorama of the Asian heritage, Tibetan Buddhist sacred texts are tangible evidence of an ancient religious tradition. The historical value and fragility of these unique and priceless works of art, together with an increased awareness of the importance of preserving our cultural heritage, has prompted the use of non-invasive analytical techniques to the study of these ancient religious items. In particular, the present work aims to characterize inks and pigments of two ancient Tibetan manuscripts part of the collection of the Museum of Natural History, Department of Anthropology, in Florence (IT). A combination of portable microphotography, X-ray fluorescence (XRF), and UV-Vis-NIR fiber optic reflectance spectroscopy (FORS) was used for in situ investigation of all the most significant painted area appearing in the manuscripts. Information about the preparatory substrate, the pigments, and the metal inks were gained. A step forward a better understanding of the working methods applied by the artists was made, thus contributing significantly towards the planning of the most appropriate conservation-restoration procedures.
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2016
One of the main objectives of the THz-ARTE project is the construction of a portable THz imaging ... more One of the main objectives of the THz-ARTE project is the construction of a portable THz imaging scanner, specifically designed to investigate mural paintings. Making of such a device and its use on an artwork will be presented.
Studies in Conservation, 2000
2014 44th European Microwave Conference, 2014
The Terahertz imaging technique was applied to observe the preparation layer of wall paintings. T... more The Terahertz imaging technique was applied to observe the preparation layer of wall paintings. The experimental results revealed the effect of the particle size of fillers and the possibility of internal interface observation by the THz pulse-echo imaging.
Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/f... more Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/fluorescence (UVL and UVf, respectively) imaging has been expanding.The unique and significant contribution of this technique for investigation of cultural heritage has led to the development of new methodologies and applications. Each chapter in this volume can be read independently. While this means that some repetition may occur between the individual chapters, in particular regarding the explanation of terminology and methodology, such overlap provides interesting opportunities for cross-comparison of both terminology and methodology. In addition, it highlights similarities and differences between different situations in the practical application
Heritage Science, Dec 1, 2014
DOAJ (DOAJ: Directory of Open Access Journals), May 12, 2016
Proc. 4th Int. Workshop Advanced Infrared Technology and Applications, 1998
Color Research & Application, 2020
2018 First International Workshop on Mobile Terahertz Systems (IWMTS), 2018
The electromagnetic radiation, in the range from IR to X-rays, is widely used in the field of art... more The electromagnetic radiation, in the range from IR to X-rays, is widely used in the field of art conservation and diagnostics. In the last few years a new interest was devoted to the longer wavelengths, in the so called “THz region” of the spectrum, due to the peculiar characteristics of the radiation in this spectral range, that make it ideal for applications in this field [1]: it's low photon energy and its ability to penetrate dielectric materials. This high penetration capabilities were used to demonstrate the possibility to detect artwork hidden under layers of other dielectric materials [2]–[4]. Making use of phase-sensitive techniques it is also possible to get information on the optical properties of the materials under study and to obtain images that include spectroscopic information about the sample [5]. Moreover, radiation in the THz range is strongly reflected and absorbed by water, and this feature can be used to study degradation in mural paintings and mosaics.
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017
THz radiation is strongly absorbed, as well as reflected, by water. This spectral feature can be ... more THz radiation is strongly absorbed, as well as reflected, by water. This spectral feature can be exploited to detect the presence of water under the surface of mural paintings and mosaics. In this study we report on the capability of our 3D reflective THz imaging system to detect water under samples simulating a fresco or a mosaic.
Bollettino Della Societa Geologica Italiana, 1990
Archaeological and Anthropological Sciences, 2017
In the complex and multiform panorama of the Asian heritage, Tibetan Buddhist sacred texts are ta... more In the complex and multiform panorama of the Asian heritage, Tibetan Buddhist sacred texts are tangible evidence of an ancient religious tradition. The historical value and fragility of these unique and priceless works of art, together with an increased awareness of the importance of preserving our cultural heritage, has prompted the use of non-invasive analytical techniques to the study of these ancient religious items. In particular, the present work aims to characterize inks and pigments of two ancient Tibetan manuscripts part of the collection of the Museum of Natural History, Department of Anthropology, in Florence (IT). A combination of portable microphotography, X-ray fluorescence (XRF), and UV-Vis-NIR fiber optic reflectance spectroscopy (FORS) was used for in situ investigation of all the most significant painted area appearing in the manuscripts. Information about the preparatory substrate, the pigments, and the metal inks were gained. A step forward a better understanding of the working methods applied by the artists was made, thus contributing significantly towards the planning of the most appropriate conservation-restoration procedures.
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2016
One of the main objectives of the THz-ARTE project is the construction of a portable THz imaging ... more One of the main objectives of the THz-ARTE project is the construction of a portable THz imaging scanner, specifically designed to investigate mural paintings. Making of such a device and its use on an artwork will be presented.
Studies in Conservation, 2000
2014 44th European Microwave Conference, 2014
The Terahertz imaging technique was applied to observe the preparation layer of wall paintings. T... more The Terahertz imaging technique was applied to observe the preparation layer of wall paintings. The experimental results revealed the effect of the particle size of fillers and the possibility of internal interface observation by the THz pulse-echo imaging.
Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/f... more Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/fluorescence (UVL and UVf, respectively) imaging has been expanding.The unique and significant contribution of this technique for investigation of cultural heritage has led to the development of new methodologies and applications. Each chapter in this volume can be read independently. While this means that some repetition may occur between the individual chapters, in particular regarding the explanation of terminology and methodology, such overlap provides interesting opportunities for cross-comparison of both terminology and methodology. In addition, it highlights similarities and differences between different situations in the practical application
Heritage Science, Dec 1, 2014