References of "Herens, Elodie"
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See detailNon-invasive analysis of mural paintings from a Republican house from 1st B.C. in Ostia
Herens, Elodie ULiege; Defeyt, Catherine ULiege; Morard, Thomas ULiege et al

Conference (2018, May 23)

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei ... [more ▼]

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei bucranes, a house of the end of the Republican era discovered on the site of the Schola of Trajan in Ostia. This Domus has undergone several phases of development in the 1st century BC before being destroyed around 20 BC. A new house was immediately rebuilt after a major change from the ground, which allowed exceptional preservation of the decoration system. The results complement our knowledge of Roman painting techniques during the 1st century BC and also provide a comprehensive multidisciplinary approach to the problem of conservation of wall paintings. These two related objectives have been studied using non-destructive testing methods (MA-XRF, FTIR and Raman spectroscopy). The analyzes have been performed in situ using our mobile systems. The different set-ups had to be modified in order to be able to work on horizontal surfaces, specially our XRF scanner. The study of the pictorial layers address various issues in the field of archaeology: what technique has been implemented? Does the same technique was used in both phases of the development of Domus? Do they correspond to the techniques described by ancient writers? These responses are compared to those observed in other sets of murals dating from the 1st century BC. [less ▲]

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See detailRevealing Gauguin’s practice: multi-analytical approach of the Portrait de Suzanne Bambridge
Defeyt, Catherine ULiege; Van Vyve, E.; Leen, F. et al

in Heritage Science (2018), 6(1),

The Portrait de Suzanne Bambridge (1891) is the first oil painting executed by Paul Gauguin (1848–1903) in Tahiti. A comprehensive material study of the painting by means of MA-XRF, Raman and FT-IR ... [more ▼]

The Portrait de Suzanne Bambridge (1891) is the first oil painting executed by Paul Gauguin (1848–1903) in Tahiti. A comprehensive material study of the painting by means of MA-XRF, Raman and FT-IR techniques has been conducted to understand Gauguin’s practice. The obtained results allowed collecting unexpected material evidences, which suggest restoration and subsequent addition made by Gauguin himself. Moreover relevant compositional information has been provided that has influenced the decision-making process during the restoration of the painting as the removal of the old varnish and the overpaints, dating from undocumented past treatments, turned out to be much more complicated than expected. While X-ray radiography and multi-spectral imaging methods could not give sufficient information, overpaints and original paint layers have been distinguished through this multi-analytical approach. © 2018, The Author(s). [less ▲]

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See detailDiscovery and multi-analytical study of the last missing quarter from René Magritte’s La pose enchantée
Defeyt, Catherine ULiege; Herens, Elodie ULiege; Leen, F. et al

in Heritage Science (2018), 6(1),

The last missing quarter of La pose enchantée, a 1927 Magritte’s oil painting disappeared in 1932, has been finally found beneath Dieu n’est pas un saint, picture painted by the Belgian surrealist between ... [more ▼]

The last missing quarter of La pose enchantée, a 1927 Magritte’s oil painting disappeared in 1932, has been finally found beneath Dieu n’est pas un saint, picture painted by the Belgian surrealist between 1935 and 1936, conserved at the Brussels Magritte Museum (Royal Museums of Fine Arts of Belgium) (inv. 11681). The in-depth study conducted on Dieu n’est pas un saint by means of non-invasive and complementary imaging and analytical techniques has allowed formulating substantiated conclusions regarding this double painting. On the one hand, the routine imaging methods, including XRR, IRR and digital microscopy, have delivered a comprehensive outcome regarding the transformation process of the right top part of La pose enchantée into the current composition. On the other hand, the pigments used for both the visible and the hidden composition have been characterized through the MA-XRF analysis of the whole picture and punctual Raman measurements. Additionally, the present paper proposes a virtual colorization of La pose enchantée, which has been build on the basis of the overall material evidences collected about the right top part lying beneath Dieu n’est pas un saint. © 2018, The Author(s). [less ▲]

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See detailNon-Invasive Analysis of Mural Painting from a Late-Republican House (1st century B.C.) in Ostia
Strivay, David ULiege; Herens, Elodie ULiege; Morard, Thomas ULiege et al

Conference (2017, May)

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei ... [more ▼]

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei bucranes, a house of the end of the Republican era discovered on the site of the Schola of Trajan in Ostia. This Domus has undergone several phases of development in the 1st century BC before being destroyed around 20 BC. A new house was immediately rebuilt after a major change from the ground, which allowed exceptional preservation of the decoration system. The results complement our knowledge of Roman painting techniques during the 1st century BC and also provide a comprehensive multidisciplinary approach to the problem of conservation of wall paintings. These two related objectives have been studied using non-destructive testing methods (MA-XRF, FTIR and Raman spectroscopy). The analyzes have been performed in situ using our mobile systems. The different set-ups had to be modified in order to be able to work on horizontal surfaces, specially our XRF scanner. The study of the pictorial layers address various issues in the field of archaeology: what technique has been implemented? Does the same technique was used in both phases of the development of Domus? Do they correspond to the techniques described by ancient writers? These responses are compared to those observed in other sets of murals dating from the 1st century BC. [less ▲]

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See detailNon-invasive analysis of mural paintings from a late-Republican house in Ostia
Strivay, David ULiege; Morard, Thomas ULiege; Herens, Elodie ULiege et al

Conference (2017, April 21)

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei ... [more ▼]

This paper is a comprehensive analytical study of the murals belonging to an ancient Roman house through the characterization of materials. The project focuses on the wall paintings of the Domus dei Bucrani - a house of the end of the Republican era discovered on the site of the Schola del Traiano in Ostia. This domus has undergone several phases of development in the 1st century BC before being destroyed around 20 BC. A new house was immediately rebuilt after a major change from the ground, which allowed exceptional preservation of the decoration system. The results complement our knowledge of Roman painting techniques during the 1st century BC and also provide a comprehensive multidisciplinary approach to the problem of conservation of wall paintings. These two related objectives have been studied using non-destructive testing methods (MA-XRF, FTIR and Raman spectroscopy). The analyses have been performed in situ using our mobile systems. The different set-ups had to be modified in order to be able to work on horizontal surfaces, specially our XRF scanner. The study of the pictorial layers address various issues in the field of archaeology: what technique has been implemented? Does the same technique was used in both phases of the development of the domus? Do they correspond to the techniques described by ancient writers? These responses are compared to those observed in other sets of murals dating from the 1st century BC. [less ▲]

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See detailDiscovery of a woman portrait behind La Violoniste by Kees Van Dongen through hyperspectral imaging
Herens, Elodie ULiege; Defeyt, Catherine ULiege; Walter, Philippe et al

in Heritage Science (2017), 5(14),

Despite the fact that Kees Van Dongen was one of the most famous painter of the 20th century, only little information about his palette and his technique is available. To contribute to the ... [more ▼]

Despite the fact that Kees Van Dongen was one of the most famous painter of the 20th century, only little information about his palette and his technique is available. To contribute to the characterization of Van Dongen's painting materials, La Violoniste, painted by the artist around 1923, has been analyzed by using three complementary techniques: macro X-ray fluorescence (MA-XRF), Raman spectroscopy and hyperspectral imaging. The elemental repartition given by MA-XRF and the results obtained thanks to Raman spectroscopy help us to complete the identification of pigments contained in La Violoniste (lead white, iron oxides, cadmium yellow, vermilion, Prussian blue, titanium white, ultramarine, a chromium pigment and carbon black) while the results obtained via hyperspectral imaging reveal a hidden woman portrait. Besides the fact that Kees Van Dongen was particularly renowned for his female portraits, this hidden composition presents obvious stylistic similarities with the well-known portraits produced by the artist during his Parisian stay (starting from 1899). Thanks to Raman spectroscopy, visual examination and MA-XRF, we show that the original background contains ultramarine, the hidden portrait's clothes are probably made of the same colour as the present violinist's dress and her carnation contains zinc, contrary to the violinist's flesh which is mainly made of lead white. [less ▲]

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See detailInsight on Van Dongen’s La Violoniste by hyperspectral imaging and MA-XRF
Herens, Elodie ULiege; Strivay, David ULiege; Walter, Philippe et al

Conference (2016, July 06)

Detailed reference viewed: 38 (8 ULiège)
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See detailRecent technical developments of non-invasive cultural heritage analysis at the University of Liège
Strivay, David ULiege; Chene, Grégoire ULiege; Calvo Del Castillo, Helena ULiege et al

Conference (2015, December 07)

The University of Liège has more than twenty years of experience in the use of ion beam analysis techniques for cultural heritage research. We will present here some of the recent developments. First, we ... [more ▼]

The University of Liège has more than twenty years of experience in the use of ion beam analysis techniques for cultural heritage research. We will present here some of the recent developments. First, we have developed a high energy extracted beamline up to 20 MeV on our cyclotron with a good energy resolution of a few keV. These last years Ion Beam Analysis users show an interest in High Energy Alpha beam. These beams can be used for on-site analysis by means of radioactive sources e.g. for space application but they also offer a powerful combination of properties for the analysis of thick layers (about 10 to 20 µm). This kind of layers are often met in cultural heritage applications but can be also present on new materials. Contrary to this kind of materials where the principal information needed is the in-depth profiles as the sample are of known composition, for cultural heritage materials the combination of elemental analysis and their in-depth distribution is essential as the nature of the material is a-priori not known. We will also present the development around our first extracted beamline. We have indeed improved the automatic scanning system for macro-PIXE. Some examples will be shown. Finally we will show other non-invasive analysis developments related to cultural heritage. [less ▲]

Detailed reference viewed: 45 (16 ULiège)