Search

Your search keyword '"Barnier, Vincent"' showing total 29 results
Start Over Author "Barnier, Vincent"
29 results on '"Barnier, Vincent"'

7. Selective Growth of Graphene-Confined Inkjet-Printed Sn Nanoparticles on Plastic Using Intense Pulsed Light Annealing

Author

Kassem, Omar, primary, Barnier, Vincent, additional, Nasreldin, Mohamed, additional, Reslan, Jawad, additional, Aoufi, Asdin, additional, Ravichandran, Aravindnarain, additional, Sao-joao, Sergio, additional, Hoummada, Khalid, additional, Charai, Ahmed, additional, Rieu, Mathilde, additional, Viricelle, Jean-Paul, additional, Djenizian, Thierry, additional, and Mohamed, Saadaoui, additional

Published
2023
Full Text
View/download PDF

11. Towards Room Temperature Phase Transition of W-Doped VO 2 Thin Films Deposited by Pulsed Laser Deposition: Thermochromic, Surface, and Structural Analysis.

Author

Bleu, Yannick, Bourquard, Florent, Barnier, Vincent, Loir, Anne-Sophie, Garrelie, Florence, and Donnet, Christophe

Subjects
PHASE transitions, PULSED laser deposition, ELECTROCHROMIC effect, THIN films, THERMOCHROMISM, TRANSITION temperature, RAPID thermal processing, SURFACE chemistry
Abstract

Vanadium dioxide (VO2) with an insulator-to-metal (IMT) transition (∼68 °C) is considered a very attractive thermochromic material for smart window applications. Indeed, tailoring and understanding the thermochromic and surface properties at lower temperatures can enable room-temperature applications. The effect of W doping on the thermochromic, surface, and nanostructure properties of VO2 thin film was investigated in the present proof. W-doped VO2 thin films with different W contents were deposited by pulsed laser deposition (PLD) using V/W (+O2) and V2O5/W multilayers. Rapid thermal annealing at 400–450 °C under oxygen flow was performed to crystallize the as-deposited films. The thermochromic, surface chemistry, structural, and morphological properties of the thin films obtained were investigated. The results showed that the V5+ was more surface sensitive and W distribution was homogeneous in all samples. Moreover, the V2O5 acted as a W diffusion barrier during the annealing stage, whereas the V+O2 environment favored W surface diffusion. The phase transition temperature gradually decreased with increasing W content with a high efficiency of −26 °C per at. % W. For the highest doping concentration of 1.7 at. %, VO2 showed room-temperature transition (26 °C) with high luminous transmittance (62%), indicating great potential for optical applications. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

16. Electrochemical properties of nitrogen-doped graphene for environmental sensors

Author

Bourquard, Florent, Bleu, Yannick, Barnier, Vincent, Loir, Anne-Sophie, Chaix, Carole, Raimondi, Gaëtan, Lagarde, Florence, Jaffrezic-Renault, Nicole, Garrelie, Florence, Donnet, Christophe, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire Georges Friedel (LGF-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Interfaces & biosensors - Interfaces & biocapteurs, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and PEPS Université de Lyon - CNRS

Subjects
[PHYS]Physics [physics], [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]
Abstract

International audience; A promising way to tailor the chemical and electronic properties of graphene layers is the doping of the carbon honeycomb using heteroatoms such as nitrogen or boron. In the domain of electrochemical sensor, this may allow to control both conductivity and chemical activity. Nitrogen doped graphene was produced by the thermal annealing of nitrogen doped amorphous carbon (a-C:N) deposited either on a nickel thin film on a silicon substrate or between the silicon substrate and the nickel catalyst layer. The a-C:N thin films were produced by femtosecond pulsed laser ablation of graphite in nitrogen, while the nickel thin film was thermally evaporated. The nitrogen content and bonding configuration in the produced films were evaluated by XPS spectroscopy, with a particular attention to the ratio of pyridinic and pyrrolic bondings, the former being more interesting to control the conductivity and chemical activity of the film. The structure of the graphene was studied through microRaman spectroscopy using Raman mapping. Those results were compared to the electrochemical properties of the produced N-doped graphene films, studied through cyclic voltammetry using ferrocene as a redox probe. Electron transfer properties are compared to non-doped graphene films, which have already shown promising electrografting perspectives for advanced compound detection (1).(1) P. Fortgang et al., ACS Applied Materials and Interfaces 8 (2016) 1424-1433

Published
2018

18. Electroanalytical Performance of Nitrogen-Doped Graphene Films Processed in One Step by Pulsed Laser Deposition Directly Coupled with Thermal Annealing

Author

Bourquard, Florent, primary, Bleu, Yannick, additional, Loir, Anne-Sophie, additional, Caja-Munoz, Borja, additional, Avila, José, additional, Asensio, Maria-Carmen, additional, Raimondi, Gaëtan, additional, Shokouhi, Maryam, additional, Rassas, Ilhem, additional, Farre, Carole, additional, Chaix, Carole, additional, Barnier, Vincent, additional, Jaffrezic-Renault, Nicole, additional, Garrelie, Florence, additional, and Donnet, Christophe, additional

Published
2019
Full Text
View/download PDF

19. Experimental study of wear-induced delamination for DLC coated automotive components

Author

Choleridis, Antonios, primary, Sao-Joao, Sergio, additional, Ben-Mohamed, Jihane, additional, Chern, David, additional, Barnier, Vincent, additional, Kermouche, Guillaume, additional, Heau, Christophe, additional, Leroy, Marie-Alix, additional, Fontaine, Julien, additional, Descartes, Sylvie, additional, Donnet, Christophe, additional, and Klöcker, Helmut, additional

Published
2018
Full Text
View/download PDF

20. Effect of microstructure features on DLC delamination and blistering

Author

Choleridis, Antonios, Heau, Christophe, Leroy, Marie-Alix, Barnier, Vincent, Sao-Joao, Sergio, Donnet, Christophe, Klocker, Helmut, Laboratoire Georges Friedel (LGF-ENSMSE), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), IREIS, Laboratoire Hubert Curien [Saint Etienne] (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Georges Friedmann (LGF), and Université Paris 1 Panthéon-Sorbonne (UP1)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience

Published
2017

21. Surface and grain boundary segregation in 16MND5 steel

Author

Morvan, Tangui, Ganster, Patrick, Barnier, Vincent, Wolski, Krzysztof, Laboratoire Georges Friedel (LGF-ENSMSE), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Centre Science des Matériaux et des Structures (SMS-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Département Mécanique physique et interfaces (MPI-ENSMSE), and Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-SMS

Subjects
STRESS, ALLOYS, COMPETITION, segregation, impurities, DIFFUSION, FRACTURE, [SPI.MAT]Engineering Sciences [physics]/Materials, PHOSPHORUS, EMBRITTLEMENT, ALPHA-IRON, FE-P, steel, ANTIMONY
Abstract

International audience; An adequate model of quantification when there are many segregating elements is required for industry and research. Hence, for the first time, surface segregation kinetics on industrial 16MND5 steel was studied by XPS spectroscopy at temperatures ranging from 500 to 600(o)C. From measurements that highlight the competitive segregation of P, S, Sn, Sb, As, and Cu impurities at the surface, a quantification model was developed and successfully used to deduce the surface concentrations during segregation kinetics as well as derive the corresponding diffusion coefficients. We observed that phosphorus and sulfur are the first elements covering the surface, then they are supplanted by others' impurities. This result may reflect impurities segregation behavior at the grain boundaries that impacts mechanical behavior of the material. Indeed, to further the research, 16MND5 samples were aged in the same range of temperatures. Then, Auger spectroscopy measurements at grain boundaries were conducted on broken samples exhibiting intergranular cracking. Results show that phosphorus is the only segregating element present at grain boundaries after 2months of aging. Importantly, it appears that phosphorus grain boundary segregation kinetics is significantly lower than at surface. Copyright (c) 2017 John Wiley & Sons, Ltd.

Published
2017

23. A method for the quantitative extraction of gold nanoparticles from human bronchoalveolar lavage fluids through a glycerol gradient

Author

Bitounis, Dimitrios, primary, Barnier, Vincent, additional, Guibert, Cyril, additional, Pourchez, Jérémie, additional, Forest, Valérie, additional, Boudard, Delphine, additional, Hochepied, Jean-François, additional, Chelle, Pierre, additional, Vergnon, Jean-Michel, additional, and Cottier, Michèle, additional

Published
2018
Full Text
View/download PDF

24. DC nitrogen plasma assisted Femtosecond Pulsed Laser Deposition of Carbon-Nitrogen alloy for environmental analytical Microsystems: thin films characterization and in situ plume analysis

Author

Maddi, Chiranjeevi, Bourquard, Florent, Tite, Teddy, Zehani, Nedjla, Fortgang, Philippe, Loir, A.-S., Barnier, Vincent, Namour, Philippe, Lagarde, Florence, Rojas, Teresa-Cristina, Sanchez-Lopez, Juan Carlos, Chaix, Carole, Jaffrezic-Renault, Nicole, Wolski, Krzysztof, Donnet, Christophe, Garrelie, Florence, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Interfaces & biosensors - Interfaces & biocapteurs, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Département Mécanique physique et interfaces (MPI-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-SMS, River Monitoring & Management - Suivi et gestion des rivières (2014-2016), Instituto de Ciencia de Materiales de Sevilla (ICMSE), and Universidad de Sevilla-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)

Subjects
[PHYS]Physics [physics], [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

26. Robust Electrografting on Self-Organized 3D Graphene Electrodes

Author

Fortgang, Philippe, primary, Tite, Teddy, additional, Barnier, Vincent, additional, Zehani, Nedjla, additional, Maddi, Chiranjeevi, additional, Lagarde, Florence, additional, Loir, Anne-Sophie, additional, Jaffrezic-Renault, Nicole, additional, Donnet, Christophe, additional, Garrelie, Florence, additional, and Chaix, Carole, additional

Published
2016
Full Text
View/download PDF

27. Synthesis and characterization of tin dioxide thick film modified by APTES in vapor and liquid phases.

Author

Hijazi, Mohamad, Stambouli, Valérie, Rieu, Mathilde, Barnier, Vincent, Tournier, Guy, Demes, Thomas, Viricelle, Jean-Paul, and Pijolat, Christophe

Subjects
STANNIC oxide, TIN oxides, THIN films, FOURIER transform infrared spectroscopy, SEDIMENTATION & deposition
Abstract

Surface functionalization has numerous applications worldwide. Silicon oxide has been a research material of choice. However, tin dioxide (SnO) films are employed in many applications especially in gas sensors, and little studied in regard to functionalization. Thus, they were chosen to be functionalized via 3-aminopropyltriethoxysilane (APTES). Different synthesis parameters were tested such as APTES grafting by vapor or liquid phases deposition. In liquid, many parameters were investigated: water presence, reaction times, and APTES concentration. The presence and reactivity of grafted amine-terminated film on SnO were carried out by Alexa Fluor molecules. In addition, APTES grafting was characterized using attenuated total reflectance Fourier transform infrared spectroscopy and X-ray photoelectron spectrometry techniques. These characterizations showed how synthesis parameters affect the amount and thickness of APTES films. Optimal liquid silanization parameters were determined in order to obtain a saturated SnO surface with APTES molecules. Importantly, the addition of 5 vol% HO to the APTES solution provided denser surface coverage, by hydrolyzing the ethoxy groups to silanol. An almost 50% improvement over anhydrous liquid and vapor methods was obtained. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

29. Selective Oxidation of Chromium by O2 Impurities in CO2 During Initial Stages of Oxidation.

Author

Bouhieda, Soraya, Rouillard, Fabien, Barnier, Vincent, and Wolski, Krzysztof

Subjects
CHROMIUM, CARBON dioxide, OXIDATION, INDUSTRIAL contamination, CORROSION & anti-corrosives, OXYGEN
Abstract

This study shows that the corrosion behaviour of 12 wt% Cr steel in CO 2 at 550 °C is determined in the first stage of oxidation by reaction with O 2 impurities. Depending on the amount of theses impurities and the thermal ramp rate, selective oxidation of chromium could lead to the formation of a protective chromium-rich oxide. An oxidation model describing qualitatively the nature of the oxide layer formed in the initial period of oxidation is presented. From these observations, surface engineering processes for protecting 9–12 wt% chromium steels from fast corrosion rate have emerged. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results