23 results on '"Eric Le Bourhis"'
Search Results
2. Surface engineering of titanium alloy TiAl6V4 by multi-interstitial diffusion using plasma processing
- Author
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Michel Drouet, Luc Pichon, Yves Vallet, Eric Le Bourhis, and Thomas L. Christiansen
- Subjects
ti6al4v ,surface treatment ,micro-hardness ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Titanium alloy Ti6Al4V possesses a range of highly interesting properties such as excellent corrosion resistance, bio-compatibility and high specific stress but suffers from poor wear resistance. The present work addresses plasma assisted surface treatment using various combinations of nitriding and oxidizing treatments for improving the surface properties of this alloy. The response to the surface treatments is investigated by hardness depth profiling in correlation with the chemical and microstructural evolution. It highlights the advantages of combined nitriding and oxidizing treatments compared to single nitriding for improving surface mechanical properties of titanium alloys.
- Published
- 2022
- Full Text
- View/download PDF
3. Oxide-Free Bonding of III-V-Based Material on Silicon and Nano-Structuration of the Hybrid Waveguide for Advanced Optical Functions
- Author
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Konstantinos Pantzas, Ahmad Itawi, Isabelle Sagnes, Gilles Patriarche, Eric Le Bourhis, Anatole Lupu, Henri Benisty, and Anne Talneau
- Subjects
silicon photonics hybrid integration ,III-V materials ,wafer bonding ,oxide-free bonding ,silicon waveguide nanopatterning ,telecom optical functions ,Applied optics. Photonics ,TA1501-1820 - Abstract
Oxide-free bonding of III-V-based materials for integrated optics is demonstrated on both planar Silicon (Si) surfaces and nanostructured ones, using Silicon on Isolator (SOI) or Si substrates. The hybrid interface is characterized electrically and mechanically. A hybrid InP-on-SOI waveguide, including a bi-periodic nano structuration of the silicon guiding layer is demonstrated to provide wavelength selective transmission. Such an oxide-free interface associated with the nanostructured design of the guiding geometry has great potential for both electrical and optical operation of improved hybrid devices.
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- 2015
- Full Text
- View/download PDF
4. Glass: Mechanics and Technology
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Eric Le Bourhis
- Published
- 2014
5. Mechanical Properties of Natural Fiber Composites
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Eric Le Bourhis, Fabienne Touchard, Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, ENDOmmagement et durabilité ENDO (ENDO), Département Physique et Mécanique des Matériaux (Département Physique et Mécanique des Matériaux), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut Pprime (PPRIME), and ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
- Subjects
Materials science ,Interfacial strength ,Interfacial bonding ,Mechanical properties ,02 engineering and technology ,Interface ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Engineering applications ,01 natural sciences ,0104 chemical sciences ,Topical review ,Damage ,Plant fibre composites ,[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] ,Quasistatic and dynamic behaviours ,Composite material ,0210 nano-technology ,Hydrophilicity ,Natural fiber - Abstract
International audience; This topical review covers the mechanical properties of natural fiber composites (NFCs) that allow applications in many application fields ranging from infrastructure to transportation. Climate change alerts on the importance of sustainability and NFCs offer opportunities when compared to conventional glass-fiber composites. Advantages and drawbacks of NFC versus synthetic composites are considered and discussed. Mechanical properties are assessed both statically and dynamically. The hydrophilicity and its consequences on damage and deformation mechanisms are also addressed. The key to making well-reinforced composites is by ensuring that there is a strong interface between the reinforcing phase and the matrix phase. The interfacial bonding quality is thus discussed through various testing methods and the effects of surface treatments are presented.
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- 2021
- Full Text
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6. Seeking Accountability for Nazi and War Crimes in East and Central Europe : A People’s Justice?
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Eric Le Bourhis, Irina Tcherneva, Vanessa Voisin, Eric Le Bourhis, Irina Tcherneva, and Vanessa Voisin
- Subjects
- World War, 1939-1945--Atrocities, War crime trials--Europe, Eastern, War crimes--Europe, Eastern, War crimes--Europe, Central, War crime trials--Europe, Central
- Abstract
The thirst for post-World War II justice transcended the Cold War and mobilized diverse social groups. This is a story of their multilayered and at times conflictual interactions.In this edited collection, sixteen historians develop a new approach to the trials against persons accused of war crimes and mass murder in Europe during the ascendancy of Nazism and the Second World War (1933-1945). Focusing on the social aspects of the demand for justice and making use of previously underexploited local and international sources, contributors put to the test the notion of'show trials'and explore a range of judicial and political cultures from Germany to the Soviet Union. Essays uncover the expectations around accountability and forms of mobilization on the part of a range of citizens involved in the trials: survivors, witnesses, perpetrators, Nazi hunters, and civic activists. In addition to the perspective of these citizens, contributors invoke the expertise of reporters, filmmakers, historians, investigators, and prosecutors who shaped public representations of justice. These shaping efforts, the authors show, often supported the desire of political authorities to benefit from the publicity of the trials and to contain the spontaneous dissemination of information. The book's close examination of interactions between citizens and authorities thus demonstrates the extent and limits of what might be called a'coproduction'of justice, in the process shedding light on the interdependence between historical knowledge and legal prosecution of mass crimes.
- Published
- 2022
7. Instrumented indentation of an elastomeric material, protocol and application to vulcanization gradient
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Stéphane Méo, Clémence Fradet, Eric Le Bourhis, Gaëlle Berton, Florian Lacroix, Mécanique des Matériaux et Procédés (MMP), Laboratoire de Mécanique Gabriel Lamé (LaMé), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Université d'Orléans (UO)-Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université d'Orléans (UO)-Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
- Subjects
Materials science ,Polymers and Plastics ,Organic Chemistry ,Modulus ,02 engineering and technology ,Surface finish ,Strain rate ,[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph] ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Elastomer ,01 natural sciences ,Indentation hardness ,Viscoelasticity ,0104 chemical sciences ,[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] ,[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph] ,Indentation ,[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] ,Composite material ,0210 nano-technology ,Elastic modulus ,ComputingMilieux_MISCELLANEOUS - Abstract
Instrumented Indentation Testing is applied on a fluoroelastomer so as to get information about the local mechanical response of such a rubbery material. Due to their viscoelasticity, elastomers exhibit a time-dependence, responsible for a variation in their behavior as a function of the stress or strain rate. A few studies highlight modifications of the indentation hardness H and modulus E r when the load function varies. However, these works concern polymers and, to our knowledge, such an investigation has not yet been carried out on elastomeric materials. Results about the influence of the loading-unloading procedure on E r are presented here. They show elastic modulus' variations depending on the chosen protocol's time scale and reported evolutions are consistent with the expected behavior of viscoelastic materials. Furthermore, in preparation of this main study, preliminary verifications were necessary since sources of error are known to distort indentation results. A focus on the microstructure and roughness is presented in this paper and reveals, in particular, a non-negligible improvement of indentation curves (load-displacement hystereses) with an appropriate sample preparation and surface finish. These results have finally been used as a basis for the study of local gradients within a rubber sample. This study revealed a gradient (i.e. an increasing modulus) from the outer part of the sample to the inner one, attributed to thermal effects during the molding.
- Published
- 2019
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8. Size effects on the Mechanical Behavior of Nanometric W/Cu Multilayers
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Girault, Baptiste, Geandier, Guillaume, Eyidi, Dominique, Renault, Pierre-Olivier, Eric, Le Bourhis, and Goudeau, Philippe
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- 2008
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9. Study of Elastic Behavior of Metallic Thin Films by 2D Synchrotron XRD and in situ Tensile Testing
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Guillaume, Geandier, Pierre-Olivier, Renault, Philippe, Goudeau, Eric, Le Bourhis, and Baptiste, Girault
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- 2007
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10. X-ray Diffraction Study of the Mechanical Elastic Properties of Nanometric W/Cu Multilayers
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Villain, Pascale, Girault, Baptiste, Renault, Pierre-Olivier, Eric, Le Bourhis, Goudeau, Philippe, and Badawi, Frederic
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- 2006
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11. Oxide-Free Bonding of III-V-Based Material on Silicon and Nano-Structuration of the Hybrid Waveguide for Advanced Optical Functions
- Author
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A. Itawi, Eric Le Bourhis, Konstantinos Pantzas, Henri Benisty, Isabelle Sagnes, Anatole Lupu, Gilles Patriarche, and Anne Talneau
- Subjects
lcsh:Applied optics. Photonics ,silicon waveguide nanopatterning ,Materials science ,Silicon photonics ,Silicon ,business.industry ,Wafer bonding ,Hybrid silicon laser ,III-V materials ,Silicon on insulator ,chemistry.chemical_element ,lcsh:TA1501-1820 ,wafer bonding ,Waveguide (optics) ,telecom optical functions ,Atomic and Molecular Physics, and Optics ,silicon photonics hybrid integration ,chemistry ,Anodic bonding ,Nano ,oxide-free bonding ,Optoelectronics ,Radiology, Nuclear Medicine and imaging ,business ,Instrumentation - Abstract
Oxide-free bonding of III-V-based materials for integrated optics is demonstrated on both planar Silicon (Si) surfaces and nanostructured ones, using Silicon on Isolator (SOI) or Si substrates. The hybrid interface is characterized electrically and mechanically. A hybrid InP-on-SOI waveguide, including a bi-periodic nano structuration of the silicon guiding layer is demonstrated to provide wavelength selective transmission. Such an oxide-free interface associated with the nanostructured design of the guiding geometry has great potential for both electrical and optical operation of improved hybrid devices.
- Published
- 2015
- Full Text
- View/download PDF
12. ORMOSIL thin films: Tuning mechanical properties via a nanochemistry approach
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Rosaria Ciriminna, Davide Tranchida, Mario Pagliaro, Giovanni Palmisano, Eric Le Bourhis, PALMISANO G, ERIC LE BOURHIS, ROSARIA CIRIMINNA, DAVIDE TRANCHIDA, and MARIO PAGLIARO
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Photons ,Materials science ,business.industry ,Nanochemistry ,Nanotechnology ,Surfaces and Interfaces ,Condensed Matter Physics ,Ormosil ,Silicate ,Polymerization ,two-photon polymerization ,chemistry.chemical_compound ,chemistry ,Siloxane ,Electrochemistry ,Microelectronics ,General Materials Science ,Thin film ,business ,Elastic modulus ,Spectroscopy - Abstract
The mechanical properties (hardness and elastic modulus) of organically modified silicate thin films can be finely tuned by varying the degree of alkylation and thus the fraction of six- and four-membered siloxane rings in the organosilica matrix. This opens the way to large tunability of parameters that are of crucial practical importance for films that are finding increasing application in numerous fields ranging from microelectronics to chemical sensing.
- Published
- 2006
- Full Text
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13. Crystallographic and structural transformations of sedimentary chalcedony in flint upon heat treatment
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Patrick Schmidt, Christian Perrenoud, Aneta Slodczyk, François Fröhlich, Sylvie Masse, Guillaume Laurent, Jacques Livage, Eric Le Bourhis, Histoire naturelle de l'Homme préhistorique (HNHP), Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Matériaux et Biologie (LCMCP-MATBIO), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé (LCMCP-SMiLES), Laboratoire de Dynamique Interactions et Réactivité (LADIR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Matériaux Hybrides et Nanomatériaux (MHN), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD), Collège de France (CdF)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA, Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF)-Centre National de la Recherche Scientifique (CNRS), and Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)
- Subjects
Diffraction ,010506 paleontology ,Archeology ,Chalcedony ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,Infrared spectroscopy ,engineering.material ,01 natural sciences ,Heat treatment ,Annealing (glass) ,Annealing ,Silanole ,0601 history and archaeology ,Flint ,Porosity ,0105 earth and related environmental sciences ,060102 archaeology ,06 humanities and the arts ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Crystallography ,Transformation (function) ,Solid-state nuclear magnetic resonance ,Hydroxyl ,engineering ,Length-fast chalcedony ,Sedimentary rock ,Geology - Abstract
International audience; The early occurrence of intentional heat treatment of silica rocks has recently become a key element in the discussion about the cultural modernity of prehistoric populations. Lithic vestiges are the only sources that remain of this process and the understanding of the material's properties and transformations are essential for reconstructing the conditions and parameters applied during heat treatment. Several models of the structural transformations upon heating have been proposed in the current literature. These models are often contradictory and do not account for the most recent structural and mineralogical data on chalcedony. In order to propose a new model, we elaborated an experimental procedure and applied different techniques involving infrared spectroscopy, solid state NMR, X-ray diffraction and electron microscopy. The results show that the major transformation to happen is the loss of silanole (SiOH) and the creation of new Si-O-Si bonds according to the reaction: Si-OH HO-Si -> Si -O-Si + H2O. This reaction starts between 200 degrees C and 300 degrees C and causes an increase in the hardness of the rocks. The maximal annealing temperature and the ramp rate are the functions of the ability of the structure to evacuate newly created H2O and depend on the size of the specimen and the volume of its porosity. These results also show that the annealing duration at maximum temperature can be relatively short (
- Published
- 2012
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14. Elastic behaviour of titanium dioxide films on polyimide substrates studied by in situ tensile testing in a X-ray diffractometer
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Guillaume Geandier, Eric Le Bourhis, Baptiste Girault, Marcello Gelfi, Pierre-Olivier Renault, Elza Bontempi, Philippe Goudeau, Marcello Zucca, Laura E. Depero, Paolo Zanola, Università degli Studi di Brescia [Brescia], Laboratoire de Physique des Matériaux (PhyMat), and Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
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Nuclear and High Energy Physics ,Materials science ,02 engineering and technology ,engineering.material ,01 natural sciences ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Atomic layer deposition ,Coating ,Residual stress ,0103 physical sciences ,Ultimate tensile strength ,Deposition (phase transition) ,Thin film ,Composite material ,Instrumentation ,Diffractometer ,010302 applied physics ,Thin layers ,Titanium oxide ,Elastic properties ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,021001 nanoscience & nanotechnology ,X-ray diffraction ,Crystallography ,Atomic Layer Deposition ,engineering ,0210 nano-technology ,In situ tensile testing - Abstract
International audience; The development of new devices has created needs of precision, conformal at the atomic level deposition of high quality thin film materials. In the last years, Atomic Layer Deposition (ALD) has received much interest as a potential deposition method for advanced thin film structures. ALD presents several advantages: the film is excellently conformal and reproducible; the film thickness depends only on the number of reaction cycles, which makes the thickness control accurate and simple; the film can be deposited onto all kind of substrates. Because of the process slowness, layer thickness is generally less than 100 nm. This makes more difficult to study all characteristics of the coating. Thin layers deposited onto bulk substrates are generally in tensile or compressive stress state, which may significantly affect physical properties and possibly compromise their lifetime. To determine the residual stress it is mandatory to know the elastic constants that may also depend on the microstructure of the layers and thus the deposition process.In this work, 2D X-ray diffraction (XRD2) in combination with in situ tensile testing has been applied for the first time to measure elastic properties of TiO2 anatase films obtained by ALD. Experimental conditions, the tensile stage being installed in a laboratory micro-diffractometer equipped with a 2D image-plate detector, and the information that can be extracted from 2D diffraction patterns will be discussed. Based on these preliminary results, synchrotron radiation beam time has been allocated to study elastic properties of these thin films. The advantages and disadvantages of the proposed laboratory equipment, with respect to the synchrotron beam lines, are discussed.
- Published
- 2010
- Full Text
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15. ZrOxNy decorative thin films prepared by the reactive gas pulsing process
- Author
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Pedro P. Carvalho, Luís Miguel Cunha, Eduardo Alves, Nicolas Martin, Filipe Vaz, Eric Le Bourhis, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Matériaux (PhyMat), Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, and Universidade do Minho
- Subjects
Materials science ,Acoustics and Ultrasonics ,Analytical chemistry ,chemistry.chemical_element ,Mineralogy ,02 engineering and technology ,01 natural sciences ,Oxygen ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Metal ,Sputtering ,Phase (matter) ,0103 physical sciences ,Deposition (phase transition) ,Thin film ,ComputingMilieux_MISCELLANEOUS ,010302 applied physics ,Zirconium ,Argon ,Science & Technology ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry ,visual_art ,visual_art.visual_art_medium ,0210 nano-technology - Abstract
Zirconium oxynitride thin films were deposited by dc reactive magnetron sputtering. A zirconium metallic target was sputtered in an Ar + N2 + O2 atmosphere. Argon and nitrogen flow rates were maintained constant whereas oxygen was pulsed during the deposition, implementing the reactive gas pulsing process (RGPP). A constant pulsing period T = 3 s was used following an exponential periodic signal versus time. The introduction time of oxygen was systematically changed from 17% to 83% of the period. The RGPP allowed the synthesis of ZrOxNy films with tuneable metalloid concentrations adjusting the introduction time of the oxygen. Composition and structural variations associated with mechanical, optical and electrical properties exhibited a smooth transition, from metallic-like characteristics, typical of the fcc-ZrN phase, to semi-conducting behaviour corresponding to a mixture of orthorhombic-Zr3N4(O) and γ -Zr2ON2 crystalline phases., Fundação para a Ciência e Tecnologia (FCT) - PTDC/CTM/69362/2006.
- Published
- 2009
- Full Text
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16. Structure and mechanical properties of mesostructured functional hybrid coatings based on anisotropic nanoparticles dispersed in poly(hydroxylethyl methacrylate)
- Author
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Olivier Spalla, Jean-Pierre Jolivet, Eric Le Bourhis, Laurence Rozes, Etienne Barthel, Sophie Cassaignon, Nicolas Chemin, Corinne Chanéac, Clément Sanchez, Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI) (LCMCP (site Paris VI)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Collège de France (CdF (institution))-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
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Materials science ,Goethite ,General Chemical Engineering ,Maghemite ,02 engineering and technology ,(Hydroxyethyl)methacrylate ,engineering.material ,[CHIM.INOR]Chemical Sciences/Inorganic chemistry ,010402 general chemistry ,Methacrylate ,01 natural sciences ,chemistry.chemical_compound ,Materials Chemistry ,medicine ,Composite material ,ComputingMilieux_MISCELLANEOUS ,Birefringence ,General Chemistry ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,chemistry ,visual_art ,engineering ,visual_art.visual_art_medium ,Nanorod ,Swelling ,medicine.symptom ,0210 nano-technology ,Dispersion (chemistry) - Abstract
Colored hybrid coatings with efficient mechanical properties have been elaborated by introducing goethite (α-FeOOH) nanorods and maghemite (γ-Fe2O3) nanospheres in a poly(hydroxyethyl methacrylate) (PHEMA) matrix. The resulting hybrid coatings have been characterized with regard to the dispersion state of the particles, the swelling behavior of the PHEMA matrix, and the mechanical properties of the coatings. From a mechanical point of view, both goethite nanorods and maghemite nanospheres lead to a strong reinforcement effect of PHEMA, even at low volume fraction. The origin of such reinforcement is attributed to the existence of strong interactions at the iron oxide–PHEMA interface combined with a homogeneous dispersion of the particles. The nature and the strength of these interactions and evidence of their influence on the mechanical behavior of the nanohybrid coatings are reported. Moreover, the goethite-based hybrid coatings exhibit interesting birefringent properties associated with the stabilizatio...
- Published
- 2008
17. Enhanced Mechanical Properties in Organofluorosilica Thin Films
- Author
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Alexandra Fidalgo, Rosaria Ciriminna, Laura M. Ilharco, Mario Pagliaro, Giovanni Palmisano, and Eric Le Bourhis
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Spin coating ,Materials science ,Article Subject ,lcsh:Technology (General) ,lcsh:T1-995 ,General Materials Science ,Angular velocity ,Thin film ,Composite material ,Ormosil ,Elastic modulus - Abstract
Fluorinated hybrid organic-inorganic silicates (ORMOSIL) thin films display exceptional mechanical properties in terms of both hardness and elastic modulus that can be finely tuned by varying the angular velocity of the spin coating process. Hence, as traditional alkyl-modified silica xerogels generally show poor mechanical behavior, these materials offer a solution to a major limitation to applicability of ORMOSIL-based films.
- Published
- 2008
- Full Text
- View/download PDF
18. Study of elastic behavior of metallic thin films by 2D synchrotron XRD and in situ tensile testing
- Author
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Eric Le Bourhis, Girault Baptiste, Renault Pierre-Olivier, Goudeau Philippe, Geandier Guillaume, Laboratoire de métallurgie physique (LMP), and Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers
- Subjects
010302 applied physics ,Diffraction ,Materials science ,XRD ,thin film ,02 engineering and technology ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,021001 nanoscience & nanotechnology ,01 natural sciences ,Synchrotron ,Grain size ,law.invention ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Crystallography ,x-ray diffraction ,law ,0103 physical sciences ,Ultimate tensile strength ,Composite material ,Metallic thin films ,Thin film ,elastic properties ,0210 nano-technology ,In situ tensile testing ,Diffractometer - Abstract
Understanding the mechanical behaviour of nano-structured thin films in relation to their structure, in particular to the grain size, is of high importance for the development of technological applications. Model nanometric multilayer W/Au systems exhibiting different structures are elaborated. These films are supported by a (thin) polyimide substrate. Films mechanical response is characterized experimentally by tensile tests carried out in-situ in a X-ray diffractometer installed on a synchrotron source. X-ray diffraction in transmission geometry has been used to study the deformations of both phases as a function of applied load. This geometry has been developed in the aim of optimizing the experiment time.
- Published
- 2007
- Full Text
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19. Ormosil thin films: Tuneable mechanical properties via a nanochemistry approach
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Giovanni Palmisano, Eric Le Bourhis, Rosaria Ciriminna, and Mario Pagliaro
- Published
- 2005
20. Glass : Mechanics and Technology
- Author
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Eric Le Bourhis and Eric Le Bourhis
- Subjects
- Glass, Glass manufacture
- Abstract
This is the first book to discuss the correlation between the performance of industrial processes and practice-relevant properties, such as strength and optical properties. Interdisciplinary in his approach, the author discusses both the science and technology, starting with glass past and present, its structure, and rheology. The sections on properties include mechanical strength and contact resistance, ageing, mechanics of glass processes, the production and control of residual stresses, high-tech producers and current research and development. Applications covered include glazing, packaging, optical glass, glass fibers for reinforcement, and abrasive tools.
- Published
- 2008
21. Structure and Mechanical Properties of Mesostructured Functional Hybrid Coatings Based on Anisotropic Nanoparticles Dispersed in Poly(hydroxylethyl methacrylate).
- Author
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Nicolas Chemin, Laurence Rozes, Corinne Chanéac, Sophie Cassaignon, Eric Le Bourhis, Jean-Pierre Jolivet, Olivier Spalla, Etienne Barthel, and Clément Sanchez
- Published
- 2008
- Full Text
- View/download PDF
22. Mechanical properties of hybrid organic–inorganic materials.
- Author
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Fayna Mammeri, Eric Le Bourhis, Laurence Rozes, and Clement Sanchez
- Published
- 2005
23. Justice in Mantle Coats. Shooting the Bulgarian People’s Courts in Revolutionary Times (1944-1945)
- Author
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Ragaru, Nadège, Centre de recherches internationales (CERI), Sciences Po (Sciences Po)-Centre National de la Recherche Scientifique (CNRS), Eric le Bourhis, Irina Tcherneva and Vanessa Voisin (eds.), Centre de recherches internationales (Sciences Po, CNRS) (CERI), and Ryser, Dorian
- Subjects
[SHS.DROIT]Humanities and Social Sciences/Law ,[SHS.DROIT] Humanities and Social Sciences/Law ,[SHS.HIST] Humanities and Social Sciences/History ,[SHS.HIST]Humanities and Social Sciences/History ,[SHS.SCIPO] Humanities and Social Sciences/Political science ,ComputingMilieux_MISCELLANEOUS ,[SHS.SCIPO]Humanities and Social Sciences/Political science - Abstract
International audience
- Published
- 2020
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