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2 results on '"Benoit Prochet"'

1. Non-destructive Characterisation of Inks by Spectroscopy and Surface Analyses

Author

Manuel Lopes, Marie-Elizabeth Boutroue, Georges Zissis, Benoit Prochet, Christina Villeneuve-Faure, Patricia Roger-Puyo, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Lumière et Matière (LAPLACE-LM), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Diélectriques Solides et Fiabilité (LAPLACE-DSF), IRAMAT - Centre Ernest Babelon (IRAMAT-CEB), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), Centre d'études supérieures de la Renaissance UMR 7323 (CESR), Ministère de la Culture et de la Communication (MCC)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), ANR, Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM), and Ministère de la Culture et de la Communication (MCC)-Université de Tours-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Polymer science, Atomic force microscopy, 010401 analytical chemistry, 010402 general chemistry, [SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology, 01 natural sciences, 0104 chemical sciences, Characterization (materials science), Non destructive, Microscopy, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Spectroscopy, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS
Abstract

From the Middle Age to the XIX century, different types of inks exist in Europe with a shade from black to brown. Black inks are usually linked to iron gall inks made from metal salt and vegetable tannins. Knowledge the exact composition of the ink without deterioration of the document is essential to provide information on geographical and temporal origins. Different non-destructive methods are studied to authenticate documents, to analyse inks and to establish their identity. In this paper, we propose to combine different methods to characterization various ink properties: Fourier Transform InfraRed and Raman spectroscopy for chemical composition, with Atomic Force Microscopy and numerical microscopy for surface morphology. These non-destructive analyses were applied on ink samples made with ancient recipes with and without Alum and on Ancient document.

Published
2020

2. Synthesis, Structural and Optical Properties of Bismuth-Doped Sol-Gel-Derived Phosphosilicate Glasses

Author

Hicham El Hamzaoui, Bruno Capoen, Christophe Kinowski, Mohamed Bouazaoui, Géraud Bouwmans, Igor Razdobreev, Andy Cassez, Benoit Prochet, Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), and Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
Fabrication, Optical fiber, Photoluminescence, Materials science, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, law.invention, Bismuth, law, 0103 physical sciences, Materials Chemistry, Electrical and Electronic Engineering, Sol-gel, 010302 applied physics, Optical amplifier, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, Doping, Surfaces and Interfaces, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Optoelectronics, 0210 nano-technology, business, Tunable laser
Abstract

International audience; Bismuth-doped glasses are attractive materials for the development of new optical amplifiers and tunable laser sources. In this paper, Bi-dopedphosphosilicate glasses are prepared using the sol-doping technique in combination with shaping using cold isostatic pressing. After a first drawingat high temperature (2000 C), the obtained glass cane presents a wide near infrared (NIR) photoluminescence band under visible excitation. The authors show that this NIR optical activity, connected to phosphorus center, is preserved after a second drawing into a conventional optical fiber. These results confirm the potentialities of this synthesis approach for the fabrication of Bi-activated optical fibers.

Published
2018

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