Author: "Lucian Roiban" / Publisher: hal ccsd - Searchworks@Jio Institute Digital Library Search Results

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35 results on '"Lucian Roiban"'

1. Development of a bio-inspired angular acceleration sensor : towards the non-invasive investigation of inner ear pathologies

Author: Etienne Puyoo, Laurent Gremillard, Lucian Roiban, Alice Vieren, E. Ionescu, Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)
Subjects: Vestibular system, Physics, inner ear, Angular acceleration, Semicircular canal, Acoustics, vestibular system, Non invasive, Transduction (psychology), flexible sensor, bio-inspired angular acceleration sensor, Pulse (physics), medicine.anatomical_structure, medicine, piezoresistive cantilever, Inner ear, Development (differential geometry), [SDV.IB]Life Sciences [q-bio]/Bioengineering
Abstract: International audience; In this paper, we introduce the development of a bio-inspired system that mimics the angular acceleration sensor function provided by the vestibular system. The prototype is made of a Plexiglas piece that presents the pattern of a semicircular canal at scale 10, with a simplified geometry. A flexible piezoresistive cantilever integrated on polyimide substrate is used to model the electro-mechanical transduction of the cupula/hair cells system. The electro-mechanical response of the complete system is analyzed when submitted to both pulse and sine rotational excitations. It is demonstrated that the biomimetic system only responds to one rotational axis, and is also sensitive to the rotational direction. We also validate that the prototype actually responds to the expected medium vestibular frequencies (from 0.16Hz to 0.64Hz).
Published: 2021
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2. Morphological changes of silica aged under environmental conditions by three-dimensional nanoscale quantifications

Author: Guilhem P. Baeza, Karine Masenelli-Varlot, Jacques Jestin, Geneviève Foray, Lucian Roiban, Bernard Yrieix, Bruno Chal, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), ILL, Matériaux et Mécanique des Composants (EDF R&D MMC), EDF R&D (EDF R&D), and EDF (EDF)-EDF (EDF)
Subjects: Length scale, Superinsulation, Nanostructure, Materials science, Renewable Energy, Sustainability and the Environment, Nanotechnology, 02 engineering and technology, General Chemistry, Energy consumption, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 7. Clean energy, 0104 chemical sciences, [SPI.MAT]Engineering Sciences [physics]/Materials, Thermal conductivity, Electron tomography, Natural rubber, visual_art, visual_art.visual_art_medium, General Materials Science, 0210 nano-technology, Nanoscopic scale
Abstract: In recent decades, nanostructured silica has become a key component in several materials developed at the industrial length scale. Used for its outstanding ability to structure food, drugs, and rubber, to fulfil specific needs in numerous applications, it has also led to the widespread development of sustainable energy-based materials. Superinsulation materials endowed with an exceptionally low thermal conductivity are a major goal regarding energy consumption and carbon dioxide emission. However, because the properties of insulation materials greatly depend on their nanostructures, it is crucial to ensure their hygrothermal stability, by limiting ageing phenomena. Here, we thoroughly characterize the hygrothermal ageing of a fractal industrially relevant silica using a complementary set of experimental techniques, providing local (TEM and electron tomography) and statistical indicators of structural evolution. For the first time, we unambiguously evidence the smoothing of elementary particles and quantify their growth (from 4.3 to 10.0 nm), which results in the densification of aggregates at the upper length scale.
Published: 2021
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3. In-situ annealing transmission electron microscopy of plasmonic thin films composed of bimetallic Au-Ag nanoparticles dispersed in a TiO2 matrix

Author: Joel Nuno Pinto Borges, Thierry Epicier, Eduardo Alves, Diogo Emanuel Carvalho Costa, Marcos Rodrigues, N.P. Barradas, Mimoun Aouine, Philippe Steyer, Lucian Roiban, Filipe Vaz, IRCELYON-Microscopie (MICROSCOPIE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and IRCELYON-Méthodologies En Microscopie Environnementale (MEME)
Subjects: Materials science, Annealing (metallurgy), Nanoparticle, 02 engineering and technology, Thermal treatment, [CHIM.CATA]Chemical Sciences/Catalysis, Sputter deposition, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, [SDE.ES]Environmental Sciences/Environmental and Society, 0104 chemical sciences, Surfaces, Coatings and Films, Chemical engineering, Transmission electron microscopy, Thin film, 0210 nano-technology, Instrumentation, Bimetallic strip, Localized surface plasmon
Abstract: This work was focused on the characterization of plasmonic thin films composed of Au–Ag nanoparticles dispersed in a TiO2 dielectric matrix in comparison with the monometallic Au/TiO2 plasmonic system. The thin films were prepared by reactive DC magnetron sputtering, followed by thermal annealing at different temperatures to promote nanoparticles' growth. Thermal treatment from 400 °C induced the appearance of Localized Surface Plasmon Resonances (LSPRs) in both Au/TiO2 and Au–Ag/TiO2 thin films. The latter showed a wider LSPR response, due to the broader size distribution of nanoparticles (analyzed by transmission electron microscopy, TEM). Further nanometer-scale chemical analysis allowed to confirm the presence of Au–Ag bimetallic nanoparticles. To thoroughly study the influence of the annealing treatment on the nanoparticles' growth, Au–Ag/TiO2 was also deposited on heating TEM nano-chips for in-situ annealing experiments. The formation of silver aggregates was found in the sample as-deposited, with these precipitates dissolving in the matrix with the increase of annealing temperature up to 200 °C. For higher temperatures, nanoparticles’ real-time growth was observed, together with the crystallization of the TiO2 matrix above 550 °C. Besides, the plasmonic Au–Ag/TiO2 thin films revealed LSPR sensitivity when in contact with different dielectric media, highlighting their potential as refractive index sensors.
Published: 2021
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4. Real-time high-temperature scanning indentation: Probing physical changes in thin-film metallic glasses

Author: Lucian Roiban, Philippe Steyer, Guillaume Kermouche, Gabrielle Tiphéne, Gaylord Guillonneau, Jean-François Pierson, A. Borroto, Jean-Luc Loubet, Solène Comby-Dassonneville, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), 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), Institut Jean Lamour (IJL), and Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Materials science, Amorphous metal, 02 engineering and technology, Nanoindentation, 021001 nanoscience & nanotechnology, 01 natural sciences, Amorphous solid, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Differential scanning calorimetry, law, Indentation, 0103 physical sciences, General Materials Science, Thin film, Composite material, Crystallization, 0210 nano-technology, Supercooling
Abstract: This work reports the use of a new high-temperature scanning indentation (HTSI) technique to monitor the physical changes occurring in thin-film metallic glasses (TFMGs) in situ during heat treatment at the local scale. Using this technique, based on high-speed nanoindentation performed during thermal cycles, the entire mechanical evolution with temperature of a binary model ZrCu TFMG was characterized in only a few hours. This approach enabled clear identification of the physical evolutions of the amorphous coatings in only one indentation experiment, highlighting in particular the metallic glass-to-supercooled liquid transition and crystallization process. In addition, the brittle-to-ductile transition was precisely characterized, with remarkable agreement with the literature. Moreover, the mechanical response of the ZrCu thin film was assessed in situ throughout the entire supercooled liquid stage, providing key kinetic information. Nanohardness measurements also enabled the crystallization fraction to be computed over time during the crystallization process. In addition, differential scanning calorimetry and high-temperature X-ray diffraction were performed for comparison purposes, with excellent agreement with the HTSI results. Through this model out-of-equilibrium thin-film study, both the efficiency and robustness of HTSI were demonstrated, providing a better understanding of the thermally activated mechanisms of small-scale systems.
Published: 2021
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5. Manganese oxidation states repartition in a channel‑like mesoporous zirconium oxide

Author: Nelly Couzon, Clémentine Fellah, Leostan Cristian, Fernand Chassagneux, Rodica Chiriac, Francois Toche, Brioude, A., Ioan-Ovidiu Ersen, Khrouz, L., Lucian Roiban, Bois, L., Laboratoire des Multimatériaux et Interfaces (LMI), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon), National Institute for Research and Development of Isotopic and Molecular Technologies (INCDTIM), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Strasbourg (UNISTRA), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Abstract: International audience; Here, we present a mesoporous mixed manganese zirconium oxide (MnZr) synthesized by evaporation induced self-assembly (EISA) method involving a block copolymer self-assembly method. The MnZr oxide has been fully characterized by X-ray diffraction, transmission electronic microscopy, analytical electronic tomography, nitrogen adsorption/desorption isotherms, thermogravimetric analysis, X-ray photoelectron spectroscopy and electronic paramagnetic resonance. Electronic tomography analysis reveals that a mesoporous solid solution MnZr was successfully obtained by this way, with a homogeneous dispersion of Mn. X-ray diffraction, X-ray photoelectron spectroscopy, thermal analysis and electronic paramagnetic resonance inform about the manganese oxidation states present (II, III and IV) and their location within the sample.
Published: 2020

6. Highly ductile amorphous oxide at room temperature and high strain rate

Author: Janne Kalikka, Erkki Levänen, Thierry Epicier, Lucile Joly-Pottuz, Lucian Roiban, Fabio Di Fonzo, Mikko Hokka, Douglas Stauffer, Siddardha Koneti, Megan J. Cordill, Matteo Vanazzi, Erkka Frankberg, Jaakko Akola, Francisco García Ferré, Patrice Kreiml, Thierry Douillard, Turkka Salminen, Karine Masenelli-Varlot, Bérangère Le Saint, Jouko Hintikka, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratory of Photonics, University of Tampere [Finland], Tampere University of Technology [Tampere] (TUT), Bruker Nano, Physics Department, Norwegian University of Science and Technology, Norwegian University of Science and Technology [Trondheim] (NTNU), Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU), Center for Nano Science and Technology@PoliMi, Instituto Italiano di Tecnologia, Consortium Lyon Saint-Etienne de Microscopie (CLYM), École normale supérieure - Lyon (ENS Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM), Tampere University, Materials Science and Environmental Engineering, Physics, Research group: Nanophotonics, École normale supérieure de Lyon (ENS de Lyon)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)
Subjects: Materials science, aluminium oxide, Oxide, 02 engineering and technology, Flow stress, 01 natural sciences, chemistry.chemical_compound, [SPI]Engineering Sciences [physics], Brittleness, 0103 physical sciences, Composite material, Ductility, ComputingMilieux_MISCELLANEOUS, glass, 010302 applied physics, Multidisciplinary, 218 Environmental engineering, 221 Nanotechnology, ductile, food and beverages, 021001 nanoscience & nanotechnology, Amorphous solid, Creep, chemistry, 216 Materials engineering, Fracture (geology), room temperature, Elongation, 0210 nano-technology
Abstract: A glass that won't break Oxide glasses are important for applications ranging from smartphone screens to window panes. One familiar feature of glass is that it fractures and shatters when rapidly deformed, limiting the number of potential uses. However, Frankberg et al. found that they could deform thin films of glassy alumina (Al 2 O 3 ) with high strain rates at room temperature (see the Perspective by Wondraczek). This surprising observation is supported by simulations of the material that show that dense and flawless glassy alumina samples can deform this way. The discovery provides important insight into designing new glasses that might be more fracture resistant. Science , this issue p. 864 ; see also p. 804
Published: 2019
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7. Fast electron tomography: Applications to beam sensitive samples and in situ TEM or operando environmental TEM studies

Author: Siddardha Koneti, Lucian Roiban, Florent Dalmas, Cyril Langlois, Anne-Sophie Gay, Amandine Cabiac, Thomas Grenier, Hussein Banjak, Voichiţa Maxim, Thierry Epicier, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), IFP Energies nouvelles (IFPEN), Images et Modèles, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Imagerie Tomographique et Radiothérapie, ANR-15-CE09-0009,3DCLEAN,Tri-Dimensionnel Nano-laboratoire catalytique environnemental(2015), ANR-10-LABX-0064,Imust,Institut for Multiscale Science and Technology : from Fundamental Physics and Chemistry to Engineering in New Material and Processes and Ecotechnologies(2010), ANR-11-IDEX-0007,Avenir L.S.E.,PROJET AVENIR LYON SAINT-ETIENNE(2011), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CCSD, Accord Elsevier, Tri-Dimensionnel Nano-laboratoire catalytique environnemental - - 3DCLEAN2015 - ANR-15-CE09-0009 - AAPG2015 - VALID, Institut for Multiscale Science and Technology : from Fundamental Physics and Chemistry to Engineering in New Material and Processes and Ecotechnologies - - Imust2010 - ANR-10-LABX-0064 - LABX - VALID, and PROJET AVENIR LYON SAINT-ETIENNE - - Avenir L.S.E.2011 - ANR-11-IDEX-0007 - IDEX - VALID
Subjects: Materials science, Polymer nanocomposite, Nanotechnology, 02 engineering and technology, [SPI.MAT] Engineering Sciences [physics]/Materials, 01 natural sciences, Nanomaterials, [SPI.MAT]Engineering Sciences [physics]/Materials, Data acquisition, Environmental Transmission Electron Microscope, Pd-Al2O3, 0103 physical sciences, Nano, General Materials Science, 010302 applied physics, Tomographic reconstruction, Pd-SiO2, Mechanical Engineering, Environmental Transmission Electron Microscopy (ETEM), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Fast operando Electron Tomography, Tilt (optics), Electron tomography, Mechanics of Materials, 0210 nano-technology, Nanocatalysts
Abstract: International audience; Electron Tomography (ET) is of greatest interest in studying nano- and biological materials since it gives access to 3D morphological, chemical and physical features. Even though ET techniques have been continuously improved in the last decades, they are still limited: lengthy time scales (tens of minutes) are generally needed for the tilt series acquisition prior to the volume reconstruction step. Such long exposures to a relatively intense electron beam lead to large electron doses received by the sample. This may promote extensive irradiation damage in the case of soft materials like polymers and bio-materials when they are not protected through dedicated sample preparation methods, and any tomographic reconstruction will then be meaningless. More importantly, the time constraints drastically limit 3D investigations during dynamic in-situ experiments where the sample rapidly evolves during the acquisition.We present here developments for acquiring tilt series of projections in very short time scales, readily down to a few seconds. After an outlook of possible ways to speed up the data acquisition in the bright field imaging mode (BF-TEM), strategies for the fastest methods in ‘step-by-step’ and ‘continuous tilt’ ET will be described. Applications of these procedures are presented on various systems, including metallic Pd nanoparticles deposited on alumina, and soft materials like polymer nanocomposites and biological matter. A special reference is made to fast operando nano-tomography performed on nanomaterials during their dynamic evolution. The feasibility of fast ET is exemplified by a calcination study of Pd catalysts supported by SiO2 at 400 °C and 500 °C under 4 mbar H2 in a dedicated Environmental Transmission Electron Microscope (ETEM).
Published: 2019
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8. Shape-selective synthesis of nanoceria for degradation of paraoxon as a chemical warfare simulant

Author: Greta Camilla Magnano, Isabelle Trenque, Matthieu Bugnet, Thierry Devers, Isabelle Pitault, Karine Masenelli-Varlot, Frédéric Chaput, Marie-Alexandrine Bolzinger, Lucian Roiban, Stéphanie Briançon, David Amans, Laboratoire d'automatique, de génie des procédés et de génie pharmaceutique (LAGEPP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS), Luminescence (LUMINESCENCE), Institut Lumière Matière [Villeurbanne] (ILM), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie - UMR5182 (LC), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Consortium Lyon Saint-Etienne de Microscopie (CLYM), École normale supérieure de Lyon (ENS de Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM), IUT de Chartres, Université d'Orléans (UO), Université de Lyon-Université de Lyon-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Institut de Chimie du CNRS (INC), École normale supérieure - Lyon (ENS Lyon)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)
Subjects: [PHYS]Physics [physics], Cerium oxide, Paraoxon, Chemistry, General Physics and Astronomy, chemistry.chemical_element, Nanoparticle, 02 engineering and technology, [SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Cerium, Adsorption, [SDV.SP.PG]Life Sciences [q-bio]/Pharmaceutical sciences/Galenic pharmacology, Chemical engineering, Desorption, Specific surface area, medicine, [CHIM]Chemical Sciences, Nanorod, Physical and Theoretical Chemistry, 0210 nano-technology, medicine.drug
Abstract: International audience; Repeated attacks using organophosphorus compounds, in military conflicts or terrorist acts, necessitate developing inexpensive and readily available decontamination systems. Nanosized cerium oxide is a suitable candidate, acting as a heterogeneous catalyst for the degradation of organophosphorus compounds such as VX agent or sarin. However, the reaction mechanism of the phosphatase mimetic activity of CeO2 nanoparticles is not fully described. Adsorption, surface-promoted hydrolysis, and desorption cycles strongly depend on the physico-chemical characteristics of the facets. In this study, CeO2 nanoparticles with different shapes were elaborated by hydrothermal synthesis. Nano-octahedra, nanocubes, or nanorods were selectively obtained under different conditions (temperature, concentration and nature of the precursors). The degradation activity according to the crystal faces was evaluated in vitro by measuring the degradation kinetics of paraoxon organophosphate in the presence of CeO2 nanoparticles. The results show an influence of both specific surface area and crystal faces of the nanoparticles, with higher activity for {111} facets compared to {100} facets at 32 °C. The relative activity between the facets is ascribed to the adsorption probability, assuming coordination between the phosphoryl oxygen and cerium atoms, but also to the surface density of the Ce doublets with relevant spacing for phosphatase mimetic activity.
Published: 2019
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9. Quantitative Analysis of grafted CNT dispersion and of their stiffening of polyurethane (PU)

Author: Jean Yves Cavaille, Juan Xiao, Gildas Diguet, Lucian Roiban, Laurence Seveyrat, Laurent Lebrun, D. S. Dhungana, M.H. Jomaa, Karine Masenelli-Varlot, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), ELyTMaX, École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Tohoku University [Sendai]-Centre National de la Recherche Scientifique (CNRS), and ANR-10-INTB-0910,NAPOLECO,Polymères chargés nanotubes pour la conversion d'énergie(2010)
Subjects: Materials science, Composite number, 02 engineering and technology, Carbon nanotube, mechanical properties, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Tortuosity, law.invention, [SPI]Engineering Sciences [physics], law, medicine, Composite material, Mechanical energy, polymers, Electrostriction, carbon nanotubes, Energy conversion efficiency, General Engineering, Stiffness, 021001 nanoscience & nanotechnology, Microstructure, 0104 chemical sciences, scanning/transmission electron microscopy (STEM), smart materials, Ceramics and Composites, medicine.symptom, 0210 nano-technology
Abstract: International audience; Electroactive devices are developed for energy conversion purposes. In particular, polyurethanes (PU) are lightweight and flexible materials, which have demonstrated their ability to convert electrical energy into mechanical energy (actuation by electrostriction) and vice-versa (energy harvesting). It has been shown that energy conversion efficiency can be increased by incorporating carbon nanotubes (CNTs) into a PU matrix. The counterpart of this 2 improvement is the stiffness increase, which in turn limits the electrostriction efficiency. On the other hand, it is well known that CNTs are hardly dispersed in a polymeric matrix, and that the interfacial adhesion strength is generally poor. One solution to improve both dispersion and adhesion consists in grafting polymeric chains onto the CNT surfaces. As most of the works dedicated to improve material electroactivity are mainly empirical, this work aims to (i) better characterize these material microstructures by electron tomography, through the measurement of the CNT tortuosity, the CNT-CNT minimum distance and the number of their contacts, and (ii) and to predict their mechanical stiffness from these microstructural data. From electron microscopy observations of the studied materials, CNTs can be assumed to be composed of successive stiff rods of measured length and orientation, linked together by flexible kinks. Their mechanical stiffening effect in PU is, simply and in an original way, evaluated using the classical analytical equations derived by Halpin and Kardos, accounting for the microstructural parameters determined by electron tomography. It appears clearly that, due to their tortuosity and despite their ultra-high longitudinal stiffness, CNTs only poorly stiffen soft matrices. Fully stretching 10 m long nanotubes increases the composite modulus by almost 10 for a fraction of only 2 vol.%.
Published: 2019
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10. Electron tomography on latex particles suspended in water using Environmental Scanning Electron Microscopy

Author: Lucian Roiban, Geneviève Foray, Karine Masenelli-Varlot, X. Jiao, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Fourier shell correlation, polymer, Composite number, electron tomography, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, Suspension (chemistry), [SPI]Engineering Sciences [physics], Structural Biology, 0103 physical sciences, General Materials Science, liquid, Composite material, Image resolution, Environmental scanning electron microscope, 010302 applied physics, chemistry.chemical_classification, Cell Biology, Polymer, STEM, 021001 nanoscience & nanotechnology, ESEM, Electron tomography, chemistry, Tomography, 0210 nano-technology
Abstract: International audience; Tilted image series are acquired on liquid suspensions of latex particles supported by a carbon membrane. To do so, a home-made stage fitting in an Environmental Scanning Electron Microscope (ESEM) is optimized in order to minimize cold losses and therefore improve both sample stability and spatial resolution in the images. As latex particles are electron-sensitive materials, sample degradation and stability are taken into account in the choice of the parameters for tilted image series acquisition. Despite the limited number of images, conventional algorithms are used to reconstruct the volume and study the three-dimensional arrangement of latex particles. The lattice types are in good agreement with what can be observed on frozen suspensions, although the domain sizes are smaller. Several quantitative parameters such as the latex particle size and the distance to the first neighbors are extracted from the 3D model. Finally, the spatial resolution in the tomograms is estimated using the Crowther's criterion and Fourier Shell Correlation analysis. It is also measured directly by analyzing a suspension containing latex particles and a surfactant of interest for composite formulation.
Published: 2019
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11. 2D & 3D in situ study of the calcination of Pd nanocatalysts supported on delta-Alumina in an Environmental Transmission Electron Microscope

Author: Thierry Epicier, Siddardha Koneti, Priscilla Avenier, Amandine Cabiac, Anne-Sophie Gay, Lucian Roiban, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), IFP Energies nouvelles (IFPEN), ANR-15-CE09-0009,3DCLEAN,Tri-Dimensionnel Nano-laboratoire catalytique environnemental(2015), and ANR-10-LABX-0064,Imust,Institut for Multiscale Science and Technology : from Fundamental Physics and Chemistry to Engineering in New Material and Processes and Ecotechnologies(2010)
Subjects: Ostwald ripening, Microscope, Materials science, Ultra-high vacuum, Nanotechnology, 02 engineering and technology, General Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, Nanomaterial-based catalyst, 0104 chemical sciences, law.invention, symbols.namesake, Electron tomography, law, Transmission electron microscopy, Environmental Transmission Electron Microscope, symbols, Calcination, 0210 nano-technology
Abstract: International audience; The quality of metallic nanoparticles (NPs) used in heterogeneous catalysis relies through many aspects on their small size, on the homogeneity of their spatial distribution on their supports and on their ability to resist to sintering or coalescence. It is thus very important to quantify these parameters and understand the mechanisms controlling the growth of NPs during the genesis process of the catalyst. Whereas conventional Transmission Electron Microscopy (TEM) is currently used for these purposes, it most frequently remains a ‘static’ method where results are obtained in high vacuum and post mortem, i.e. after the typical drying, calcination and reduction steps without the possibility to follow directly the evolution of both NPs and supports during those treatments. Environmental TEM (ETEM) unlocks this blocking and allows elementary mechanisms, such as Ostwald Ripening and coalescence to be unravelled through direct in situ observations. We report here an ETEM study of the preparation of Pd-based narrow NPs, less than 5 nm in size, deposited on a δ-alumina support. We focused on 3 main objectives: (i) quantifying the sizes of NPs at each preparation step performed in situ under environmental (i.e. respectively oxygen or air and hydrogen atmospheres at working temperatures) and comparing them to post mortem measurements; (ii) identify the oxidation state of the NPs through an in situ High Resolution imaging study of their crystallographic structure; (iii) explore the possibilities of environmental tri-dimensional (3D) studies by tilt series based Electron Tomography. This last item represents a challenging breakthrough in the characterization of nanocatalysts; it will be demonstrated that the use of modern instruments (microscope and accessories) allows tomographic acquisitions to be performed very fast, within a few minutes and even seconds, which opens the way to the 3D tracking of microstructures almost in real time during their evolution under gas and at high temperature.
Published: 2019
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12. Nanostructured silica used in super-insulation materials (SIM), hygrothermal ageing followed by sorption characterizations

Author: Bernard Yrieix, Geneviève Foray, Karine Masenelli-Varlot, Lucian Roiban, Bruno Chal, Jean-Marc Chenal, EDF R&D (EDF R&D), EDF (EDF), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Sorption measurements, Materials science, 020209 energy, Hydrophobicity, 0211 other engineering and technologies, Specific surface area, 02 engineering and technology, Durability, [SPI.MAT]Engineering Sciences [physics]/Materials, Precipitated silicas, Adsorption, 021105 building & construction, Dissolution/precipitation, 0202 electrical engineering, electronic engineering, information engineering, Structural evolution, Relative humidity, Mass transfer, Electrical and Electronic Engineering, Dissolution, Hydrophilicity, Civil and Structural Engineering, Hydrophobic silica, Fumed silica, Precipitated silica, Mechanical Engineering, Aerogels, Sorption, Silica, Building and Construction, Size distribution, Influence of humidity, Surface chemistry, Ageing, Chemical engineering, Superinsulation, 13. Climate action, Pore size, Nanostructured silica
Abstract: cited By 4; Several commercial silica powders (precipitated, fumed, hydrophobized) and aerogels were aged in climatic chambers. Four different conditions of temperature [50–70 °C] and relative humidity [70–90%RH] were used to identify the influence of both parameters and the underlying mechanisms. Samples were characterized by sorption measurements (nitrogen and water) giving access to the evolution of specific surface area (BET), pore size distribution (BJH) and hydrophilicity. Structurally, a common trend along with silica ageing is the reduction of the specific surface area and a shift in the pore size distribution (loss of the smallest mesopores). However, the ageing scenario and intensities observed differ according to the type of silica (precipitated, fumed, hydrophobic, aerogels). On the one hand, the hydrophilicity of a precipitated silica decreases with ageing due to the reduction of the specific surface area. On the other hand, the hydrophilicity of a fumed silica first increases then decreases with ageing, as a result of two competing effects: the increase of local hydrophilicity (siloxane hydrolysis) and the decrease of the specific surface area. Surface chemistry appears to be a key parameter governing the extent of these evolutions: a precipitated silica is more sensitive than a fumed silica whereas the hydrophobic silica studied exhibited the strongest resistance. Therefore, the main mechanism of structural evolution, probably implying mass transfer in a dissolution/precipitation process, requires water on the surface of silica and thus hydrophilic groups to adsorb it. Short term ageing (24 days) on precipitated and fumed silicas showed that temperature is the most important parameter in activating a mechanism, the intensity of which is thereafter (96 days) governed by relative humidity. The significant influence of humidity was also observed for aerogels, for which the ageing scenario and intensity appears to be product specific. © 2018 Elsevier B.V.
Published: 2019
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13. Multiscale structure of super insulation nano-fumed silicas studied by SAXS, tomography and porosimetry

Author: Christian Olagnon, Bruno Chal, Lucian Roiban, Geneviève Foray, Guilhem P. Baeza, Belynda Benane, Bernard Yrieix, Sylvain Meille, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), EDF R&D (EDF R&D), and EDF (EDF)
Subjects: Aggregates, Materials science, Electric impedance tomography, Polymers and Plastics, Mercury intrusion porosimetry, X ray scattering, Low thermal conductivity, High resolution transmission electron microscopy, 02 engineering and technology, 01 natural sciences, [SPI.MAT]Engineering Sciences [physics]/Materials, Thermal conductivity, 0103 physical sciences, Nano, Low dimensionality, Composite material, Tomography, Fumed silica, 010302 applied physics, Scattering, Small-angle X-ray scattering, Metals and Alloys, Silica, Porosimetry, SAXS, FRactal aggregate, 021001 nanoscience & nanotechnology, Electronic, Optical and Magnetic Materials, Electron tomography, Transmission electron microscopy, Insulation, Coremaking, Ceramics and Composites, Multi-scale structures, 0210 nano-technology, Curse of dimensionality, Nanostructured silica
Abstract: cited By 2; We focus on describing the multi-scale structure of a fumed silica characterized by remarkably low thermal conductivity (ca. 2–5 mW m −1 K −1 ) when used as a core material in vacuum insulating panels. While such powders are known to be highly polydisperse at different lengthscales (hardly quantifiable), we propose to adapt a recent methodology based on small-angle X-ray scattering experiments with the aim of providing simple criteria for characterizing the morphology of these nanostructured silicas. Combining this technique with transmission electron microscopy, electron-tomography and mercury intrusion porosimetry then allows assigning the origin of the super-insulation to the low dimensionality of the silica aggregates at lengthscales smaller than 500 nm. Remarkably, by using independently these three techniques, we always find the compacity of the aggregates (radius of ca. 40 nm) to be equal to 0.29 ± 0.01. This study proposes therefore a robust methodology, potentially of a great interest for industrial applications. © 2019 Acta Materialia Inc.
Published: 2019
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14. Multimodal biosensing on paper-based platform fabricated by plasmonic calligraphy using gold nanobypiramids ink

Author: Andreea Campu, Laurentiu Susu, Filip Orzan, Dana Maniu, Ana Maria Craciun, Adriana Vulpoi, Lucian Roiban, Monica Focsan, Simion Astilean, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institute for Interdisciplinary Research in Bio-Nanosciences and Faculty of Physics, Nanobiophotonics and Laser Microspectroscopy Center, Babes-Bolyai University [Cluj-Napoca] (UBB), Faculty of Physics, University Babes-Bolya, and Faculty of Physics
Subjects: Streptavidin, Fluorophore, Materials science, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, [SPI.MAT]Engineering Sciences [physics]/Materials, lcsh:Chemistry, chemistry.chemical_compound, plasmonic paper, Nanosensor, Surface plasmon resonance, Plasmon, Original Research, MEF, SERS, biodetection, LSPR, General Chemistry, Surface-enhanced Raman spectroscopy, 021001 nanoscience & nanotechnology, Fluorescence, 0104 chemical sciences, Chemistry, lcsh:QD1-999, chemistry, nanoplatform, 0210 nano-technology, Biosensor
Abstract: cited By 0; In this work, we design new plasmonic paper-based nanoplatforms with interesting capabilities in terms of sensitivity, efficiency, and reproducibility for promoting multimodal biodetection via Localized Surface Plasmon Resonance (LSPR), Surface Enhanced Raman Spectroscopy (SERS), and Metal Enhanced Fluorescence (MEF). To succeed, we exploit the unique optical properties of gold nanobipyramids (AuBPs) deposited onto the cellulose fibers via plasmonic calligraphy using a commercial pen. The first step of the biosensing protocol was to precisely graft the previously chemically-formed p-aminothiophenol@Biotin system, as active recognition element for target streptavidin detection, onto the plasmonic nanoplatform. The specific capture of the target protein was successfully demonstrated using three complementary sensing techniques. As a result, while the LSPR based sensing capabilities of the nanoplatform were proved by successive 13-18 nm red shifts of the longitudinal LSPR associated with the change of the surface RI after each step. By employing the ultrasensitive SERS technique, we were able to indirectly confirm the molecular identification of the biotin-streptavidin interaction due to the protein fingerprint bands assigned to amide I, amide III, and Trp vibrations. Additionally, the formed biotin-streptavidin complex acted as a spacer to ensure an optimal distance between the AuBP surface and the Alexa 680 fluorophore for achieving a 2-fold fluorescence emission enhancement of streptavidin@Alexa 680 on the biotinylated nanoplatform compared to the same complex on bare paper (near the plasmonic lines), implementing thus a novel MEF sensing nanoplatform. Finally, by integrating multiple LSPR, SERS, and MEF nanosensors with multiplex capability into a single flexible and portable plasmonic nanoplatform, we could overcome important limits in the field of portable point-of-care diagnostics. © 2019 Campu, Susu, Orzan, Maniu, Craciun, Vulpoi, Roiban, Focsan and Astilean.
Published: 2019
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15. PEALD of Pt nanoparticles: towards the development of single electron transistors and flexible strain sensors

Author: Etienne Puyoo, Daniel Thomas, Martine LE BERRE, Liviu Militaru, Christophe Malhaire, Siddardha Koneti, Solène Brottet, Rémi Rafael, Matthieu Bugnet, Annie Malchere, Thierry Epicier, Lucian Roiban, INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), INL - Plateforme Technologique Nanolyon (INL - Nanolyon), Consortium Lyon Saint-Etienne de Microscopie (CLYM), École normale supérieure - Lyon (ENS Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM), LE BERRE, Martine, École Centrale de Lyon (ECL), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), École normale supérieure de Lyon (ENS de Lyon)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)
Subjects: [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2018

16. Very Fast Tomography in the (E)TEM to Probe Dynamics in Materials during Operando and In Situ Experiments

Author: Thierry Epicier, Hussein Banjak, Anne-Sophie Gay, Thomas Grenier, Sid Koneti, Voichita Maxim, Lucian Roiban, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), IFP Energies nouvelles (IFPEN), Images et Modèles, ANR-15-CE09-0009,3DCLEAN,Tri-Dimensionnel Nano-laboratoire catalytique environnemental(2015), Epicier, Thierry, Tri-Dimensionnel Nano-laboratoire catalytique environnemental - - 3DCLEAN2015 - ANR-15-CE09-0009 - AAPG2015 - VALID, Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0301 basic medicine, In situ, Materials science, Dynamics (mechanics), 02 engineering and technology, 021001 nanoscience & nanotechnology, [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 03 medical and health sciences, 030104 developmental biology, Chemical physics, Environmental TEM, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Tomography, 0210 nano-technology, Instrumentation, Transmission Electron Microscopy TEM, ComputingMilieux_MISCELLANEOUS, Operando TEM
Abstract: International audience
Published: 2018
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17. Uncovering the 3D Structure of Combustion-Synthesized Noble Metal-Ceria Nanocatalysts

Author: Lucian Roiban, Franck Morfin, Thierry Epicier, Pascale Mascunan, Mimoun Aouine, Siddardha Koneti, Laurent Piccolo, Thanh-Son Nguyen, IRCELYON-Ingéniérie, du matériau au réacteur (ING), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-Analyse chimique, texture (ANALYSE), IRCELYON-Microscopie (MICROSCOPIE), IRCELYON-Catalyse Hétérogène pour la Transition Energétique (CATREN), and IRCELYON, ProductionsScientifiques
Subjects: Materials science, Scanning electron microscope, Nanoparticle, Nanotechnology, 02 engineering and technology, engineering.material, 010402 general chemistry, Platinum nanoparticles, Heterogeneous catalysis, 01 natural sciences, Catalysis, Inorganic Chemistry, Scanning transmission electron microscopy, Physical and Theoretical Chemistry, Organic Chemistry, [CHIM.CATA] Chemical Sciences/Catalysis, [CHIM.CATA]Chemical Sciences/Catalysis, 021001 nanoscience & nanotechnology, [SDE.ES]Environmental Sciences/Environmental and Society, Nanomaterial-based catalyst, 0104 chemical sciences, engineering, Noble metal, [SDE.ES] Environmental Sciences/Environmental and Society, 0210 nano-technology, Mesoporous material
Abstract: ANALYSE:MICROSCOPIE+ECI2D:ING+FMO:PMA:MAO:LPI; International audience; With its unique redox properties, ceria is an oxide with a range of applications, including automotive catalytic converters, which consist of platinum-group metal nanoparticles on ceria-containing supports. In this work, the 3D architecture of a ceria-based material synthesized by the widely employed glycine- nitrate solution combustion method [1,2] is revealed for the first time.Together with N2 adsorption volumetry, scanning transmission electron microscopy (STEM) and scanning electron microscopy (SEM), STEM tomography provides a comprehensive picture of the multimodal porous network of a pre-reduced Pt-CeO2 catalyst, from the nanometer to the micrometer scale. This material consists of ceria nanocrystallites forming 3D aggregates and puzzle-like 2D walls separating large roundish mesopores and macropores. The small voids between imperfectly assembled crystallites give rise to some microporosity. In addition, it is demonstrated that a significant proportion of platinum nanoparticles (3–4 nm) are not located at the ceria surface following the one-step synthesis process, i.e. about half of them are buried within ceria. This result is valid for another metal (Rh) and another fuel (oxalyl dihydrazide), and has important implications for heterogeneous catalysis [3].References[1]A. Varma, A.S. Mukasyan, A.S. Rogachev, K.V. Manukyan, Chemical Reviews 2016, 116, 14496-14586.[2]F. Morfin, T.S. Nguyen, J.L. Rousset, L. Piccolo, Applied Catalysis B: Environmental 2016, 197, 2-13.[3]L. Roiban, S. Koneti, F. Morfin, T.S. Nguyen, P. Mascunan, M. Aouine, T. Epicier, L. Piccolo, ChemCatChem 2017, 9, 4607-4613.
Published: 2018

18. Evaluation of noise and blur effects with SIRT-FISTA-TV reconstruction algorithm: Application to fast environmental transmission electron tomography

Author: Hussein Banjak, Thomas Grenier, Thierry Epicier, Siddardha Koneti, Lucian Roiban, Anne-Sophie Gay, Isabelle Magnin, Françoise Peyrin, Voichita Maxim, Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Images et Modèles, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), IFP Energies nouvelles (IFPEN), Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales (MOTIVATE), European Synchrotron Radiation Facility (ESRF), ANR-15-CE09-0009,3DCLEAN,Tri-Dimensionnel Nano-laboratoire catalytique environnemental(2015), ANR-11-IDEX-0007,Avenir L.S.E.,PROJET AVENIR LYON SAINT-ETIENNE(2011), ANR-11-LABX-0063,PRIMES,Physique, Radiobiologie, Imagerie Médicale et Simulation(2011), 4 - Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé ( CREATIS ), Hospices Civils de Lyon ( HCL ) -Université Jean Monnet [Saint-Étienne] ( UJM ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Hospices Civils de Lyon ( HCL ) -Université Jean Monnet [Saint-Étienne] ( UJM ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ), 2 - Images et Modèles, Matériaux, ingénierie et science [Villeurbanne] ( MATEIS ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), IFP Energies nouvelles ( IFPEN ), 1 - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales ( MOTIVATE ), and European Synchrotron Radiation Facility ( ESRF )
Subjects: [ INFO.INFO-TS ] Computer Science [cs]/Signal and Image Processing, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 02 engineering and technology, Iterative reconstruction, 01 natural sciences, Poor quality, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, Robustness (computer science), Environmental TEM, Fast acquisition, 0103 physical sciences, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, Computer vision, Segmentation, Instrumentation, Tilt series, 010302 applied physics, [ INFO.INFO-IM ] Computer Science [cs]/Medical Imaging, business.industry, Reconstruction algorithm, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Electron tomography, Artificial intelligence, Tomography, 0210 nano-technology, business, Nanocatalysts
Abstract: International audience; Highlights The proposed SIRT-FISTA-TV algorithm is adapted to tomography reconstruction from tilt series of images such as recorded in Transmission Electron Microscopy. It produces reconstructed volumes with clear and sharp edges, and thus, the segmentation step was quite easy to perform after 3D reconstruction.SIRT-FISTA-TV can suppress noise artifacts without affecting spatial resolution.SIRT-FISTA-TV is robust to blurred data and gives better results than conventional reconstruction algorithms.SIRT-FISTA-TV is very well adapted to 3D reconstruction of experimental data (i.e. tilt series of projections) collected during very rapid tilt series acquisitions (down to 5 seconds) in situ or operando environmental TEM for studying dynamics of nanomaterials such as nanocatalysts.Fast tomography in Environmental Transmission Electron Microscopy (ETEM) is of a great interest for in situ experiments where it allows to observe 3D real-time evolution of nanomaterials under operating conditions. In this context, we are working on speeding up the acquisition step to a few seconds mainly with applications on nanocatalysts. In order to accomplish such rapid acquisitions of the required tilt series of projections, a modern 4K high-speed camera is used, that can capture up to 100 images per second in a 2K binning mode. However, due to the fast rotation of the sample during the tilt procedure, noise and blur effects may occur in many projections which in turn would lead to poor quality reconstructions. Blurred projections make classical reconstruction algorithms inappropriate and require the use of prior information. In this work, a regularized algebraic reconstruction algorithm named SIRT-FISTA-TV is proposed. The performance of this algorithm using blurred data is studied by means of a numerical blur introduced into simulated images series to mimic possible mechanical instabilities/drifts during fast acquisitions. We also present reconstruction results from noisy data to show the robustness of the algorithm to noise. Finally, we show reconstructions with experimental datasets and we demonstrate the interest of fast tomography with an ultra-fast acquisition performed under environmental conditions, i.e. gas and temperature, in the ETEM. Compared to classically used SIRT and SART approaches, our proposed SIRT-FISTA-TV reconstruction algorithm provides higher quality tomograms allowing easier segmentation of the reconstructed volume for a better final processing and analysis.
Published: 2018
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19. Electron Tomography of Plasmonic Au Nanoparticles Dispersed in a TiO2 Dielectric Matrix

Author: Borges, Joel, Martin, Nicolas, Rodrigues, Marco Sampaio, Thierry, Epicier, Vaz, Filipe, Steyer, P, Siddardha, Koneti, Lucian, Roiban, Departamento de Física [Minho] (DFUM), Universidade do Minho, 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)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), and Universidade do Minho (Centro de Física)
Subjects: [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract: International audience; Plasmonic Au nanoparticles (AuNPs) embedded into a TiO2 dielectric matrix were analyzed by combining two-dimensional and three-dimensional electron microscopy techniques. The preparation method was reactive magnetron sputtering, followed by thermal annealing treatments at 400 and 600 °C. The goal was to assess the nanostructural characteristics and correlate them with the optical properties of the AuNPs, particularly the localized surface plasmon resonance (LSPR) behavior. High-angle annular dark ﬁeldscanning transmission electron microscopy results showed the presence of small-sized AuNPs (quantum size regime) in the as-deposited Au−TiO2 ﬁlm, resulting in a negligible LSPR response. The in-vacuum thermal annealing at 400 °C induced the formation of intermediate-sized nanoparticles (NPs), in the range of 10−40 nm, which led to the appearance of a well-deﬁned LSPR band, positioned at 636 nm. Electron tomography revealed that most of the NPs are small-sized and are embedded into the TiO2 matrix, whereas the larger NPs are located at the surface. Annealing at 600 °C promotes a bimodal size distribution with intermediate-sized NPs embedded in the matrix and bigsized NPs, up to 100 nm, appearing at the surface. The latter are responsible for a broadening and a redshift, to 645 nm, in the LSPR band because of increase of scattering-to-absorption ratio. Beyond diﬀerentiating and quantifying the surface and embedded NPs, electron tomography also provided the identiﬁcation of “hot-spots”. The presence of NPs at the surface, individual or in dimers, permits adsorption sites for LSPR sensing and for surface-enhanced spectroscopies, such as surfaceenhanced Raman scattering.
Published: 2018

20. Durability of silica aerogels dedicated to superinsulation measured under hygrothermal conditions

Author: Geneviève Foray, Jean-Marc Chenal, Bernard Yrieix, Bruno Chal, Lucian Roiban, Karine Masenelli-Varlot, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Matériaux et Mécanique des Composants (EDF R&D MMC), EDF R&D (EDF R&D), and EDF (EDF)-EDF (EDF)
Subjects: Materials science, 020209 energy, Testing, 02 engineering and technology, Hygro-thermal conditions, 7. Clean energy, Precautionary principle, Durability, [SPI.MAT]Engineering Sciences [physics]/Materials, Accelerated ageing tests, Thermal conductivity, Physicochemical property, Specific surface area, Thermal, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, Composite material, Fluxmeter measurements, Gas emissions, Superinsulation, Energy efficiency in buildings, Commerce, Aerogels, Silica gel, Aerogel, Silica, General Chemistry, Size distribution, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, Ageing, Energy efficiency, Greenhouse gases, Silica aerogels, 13. Climate action, Mechanics of Materials, Pore size, 0210 nano-technology, Mesoporous material, Porosity
Abstract: cited By 0; International audience; Energy efficiency in buildings is a crucial lever for lowering greenhouse gas emissions and a mass market for silica aerogel as retrofitting material. Their durability is therefore a major concern. When applying the precautionary principle, industrial companies have difficulties in estimating the service lifetime of innovative materials such as aerogel. Thus, their costs remain high and market penetration low until the durability of the materials they produce is confirmed. In this paper, commercial silica aerogels were exposed to accelerated ageing over long periods. Microstructural evolutions were tracked by nitrogen and water sorption while thermal conductivities were characterized by heat fluxmeter measurements. 96 and 384 days at 70 °C and 90%RH were sufficient to produce noticeable changes in the physico-chemical properties of certain products but almost none in others. The first change observed was an increase of hydrophilicity, followed by a loss of specific surface area, and a shifted and enlarged pore size distribution. The measurements confirmed that microstructure changes induce higher thermal conductivities. Depending on the specific type of aerogel product, the accelerated ageing tests lead to a significant, but limited increase of thermal conductivity of up to 2,5 mW/(m.K). The main hypotheses for explaining this phenomenon are the growth of neck size between two silica particles and the presence of water in the pores. In addition, it is shown for the first time for a wide range of aerogels that pore size distribution and hydrophobization are the key parameters for tuning aerogel durability in severe conditions. Consequently, the mesoporous community has a framework of tests and mechanisms to design aerogels for their specific efficiency/cost/durability requirements. © 2018 Elsevier Inc.
Published: 2018
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21. Hollow Beta Zeolite Single Crystals for the Design of Selective Catalysts

Author: Lucian Roiban, Siddhardha Koneti, David Farrusseng, Thierry Epicier, Ana Rita Morgado Prates, Alain Tuel, Nicolas Bats, Frederic Meunier, Laurence Burel, Céline Pagis, Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IFP Energies nouvelles (IFPEN), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Chemical substance, Materials science, 010405 organic chemistry, technology, industry, and agriculture, General Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, law.invention, Catalysis, Crystal, Metal, Chemical engineering, Electron tomography, Magazine, law, visual_art, visual_art.visual_art_medium, General Materials Science, Zeolite, Science, technology and society
Abstract: We present a Pt@Beta catalyst with a unique, well-controlled location of metal nanoparticles that allows more efficient use of this rare, expensive metal in catalysis. The zeolite crystal has an inner cavity, leaving a thin zeolite shell where the metal nanoparticles are encapsulated, thereby ensuring a relatively small diffusional path length and high selectivity. Hollow Beta is obtained by a controlled dissolution–recrystallization method. The location of the particles not only was revealed by electron tomography 3D reconstruction but was further confirmed by a model hydrogenation reaction of aromatics.
Published: 2018
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22. Three-Dimensional Analytical Surface Quantification of Heterogeneous Silica-Alumina Catalyst Supports

Author: Ovidiu Ersen, Marc Drillon, Charles Hirlimann, Laurent Lemaitre, Lucian Roiban, Alexandra Chaumonnot, Loïc Sorbier, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), and IFP Energies nouvelles (IFPEN)
Subjects: Boehmite, Materials science, Silicon, Analytical chemistry, chemistry.chemical_element, scanning probe microscopy, 02 engineering and technology, Thermal treatment, 010402 general chemistry, 01 natural sciences, Catalysis, Inorganic Chemistry, Specific surface area, [CHIM]Chemical Sciences, Physical and Theoretical Chemistry, Fourier transform infrared spectroscopy, supported catalysts, acidity, Precipitation (chemistry), Organic Chemistry, silicon, [CHIM.CATA]Chemical Sciences/Catalysis, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Amorphous solid, chemistry, Transmission electron microscopy, aluminum, 0210 nano-technology
Abstract: International audience; The ability of energy-filtered transmission electron microscopy (EFTEM) tomography to provide 3D chemical maps at the nanoscale opens a new way to analyse heterogeneous materials quantitatively. In association with other techniques, EFTEM tomography has been employed in the study of amorphous silica-alumina catalyst supports. Two types of samples prepared either by mechanical mixing (MM) or by the precipitation of silica on boehmite (PSB) that have similar proportions of silica and alumina were analysed. The sample synthesised by the PSB method shows a smaller degree of heterogeneity than the sample obtained by MM. For both types of samples, a higher concentration of alumina was found at the surface, whereas silica mostly constituted the core of the sample. A thermal treatment in a humid atmosphere was shown to redistribute the silica inside the sample as well as on its surface, which decreased the specific surface area at the same time. The acid sites localisation was defined as a specific curve at the interface between the two components upon reaching the surface of the support. The length of this curve, the “alumina–silica boundary line”, was estimated by using EFTEM tomography and discussed qualitatively with the chemical inter-mixing information deduced from additional techniques such as FTIR and NMR spectroscopy.
Published: 2017
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23. Thermal evolution of silver nanoparticles onto porous TiO 2 nanostructures

Author: Ovidiu Ersen, Dumitru Georgescu, Lucian Baia, Simona Moldovan, Lucian Roiban, Groupe de physique des matériaux (GPM), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Faculty of Physics, University Babes-Bolya, Faculty of Physics, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)
Subjects: Ostwald ripening, Nanostructure, Chemistry, Composite number, technology, industry, and agriculture, Nanotechnology, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, Silver nanoparticle, 0104 chemical sciences, Crystallinity, symbols.namesake, Electron tomography, Transmission electron microscopy, Photocatalysis, symbols, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: The evolution of composite systems constituted by Ag nanoparticles (NPs) deposited onto TiO2 supports under thermal constraints is reported here. The experimental approach advanced combines different working modes and methodologies available in a transmission electron microscope (TEM), i.e. in-situ TEM and electron tomography as carried out on the very same object. The results clearly show the role of the temperature, and the environment on the ratio of encapsulated Ag NPs and on both the morphology and crystallinity of the TiO2 support. Apart from the morphology changes, this study stands as a fundamental investigation of the mechanisms of NPs coarsening particularly by Ostwald ripening. This type of behaviour can be definitely associated to the morphology changes induced by a photocatalytic reactions commonly carried out on TiO2 supports.
Published: 2017
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24. Flexible Platinum Nanoparticle-based Piezoresistive Transducers Elaborated by Atomic Layer Deposition

Author: Etienne Puyoo, Christophe Malhaire, Daniel Thomas, Rémi Rafael, Mili, Mohamed R., Annie Malchere, Lucian Roiban, Koneti, S., Matthieu Bugnet, Andrei SABAC, Martine Le Berre, INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), STI-IMM-LEG, Ecole Polytechnique Fédérale de Lausanne (EPFL), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), 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), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), and Inl, Laboratoire INL UMR5270
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS] Physics [physics], [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract: 15-18 june 2017; International audience; no abstract
Published: 2017

25. Pt nanoislands embedded in Al2O3 matrix: from ALD-based fabrication to structural to electrical characterization

Author: Daniel Thomas, Etienne Puyoo, Martine Le Berre, Liviu Militaru, Koneti, S., Annie Malchere, Lucian Roiban, Andrei SABAC, David Albertini, Bruno Canut, Francis Calmon, Brice Gautier, STI-IMM-LEG, Ecole Polytechnique Fédérale de Lausanne (EPFL), INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), 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), INL - Plateforme Technologique Nanolyon (INL - Nanolyon), INL - Spectroscopies et Nanomatériaux (INL - S&N), and Inl, Laboratoire INL UMR5270
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS] Physics [physics], [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract: 22-26/05/2017; International audience; no abstract
Published: 2017

26. Robocast zirconia-toughened alumina scaffolds: Processing, structural characterisation and interaction with human primary osteoblasts

Author: Christoph M. Sprecher, Lucian Roiban, Laurent Gremillard, Mauro Alini, Marianna Peroglio, Ana-Maria Stanciuc, Jérôme Adrien, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), AO Research institute Davos (ARI), AO Foundation, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and ADRIEN, Jérôme
Subjects: 010302 applied physics, Scaffold, Materials science, Zirconia Toughened Alumina, 02 engineering and technology, Microporous material, 021001 nanoscience & nanotechnology, 01 natural sciences, [SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], Osseointegration, Hip arthroplasty, visual_art, 0103 physical sciences, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Ceramic, Composite material, 0210 nano-technology, Layer (electronics), ComputingMilieux_MISCELLANEOUS
Abstract: Zirconia-toughened alumina (ZTA) is the gold-standard ceramic in hip arthroplasty, but still lacks direct osseointegration and a metal shell, often coated with a bioactive layer, is currently required. The latter could potentially be replaced by a thinner, architectured ZTA layer, thereby allowing for larger acetabular components, with larger range of motion and lower dislocation risk. Robocasting may be an adequate technique to fabricate the architectured layer. Therefore, as a first step, this study aimed to produce ZTA scaffolds (3D-ZTA) by robocasting and assess their in vitro response. Shape retention was achieved by using a stable, well-dispersed, high solid loading ink injected in acid pH waterbath. 3D-ZTA exhibit regularly spaced microporous, rough struts and fully interconnected macroporosity. Human primary osteoblasts were homogenously distributed inside 3D-ZTA and showed increased osteogenic marker expression compared to 2D-ZTA control. Further work will focus on optimizing scaffold design to improve cell retention and extracellular matrix maturation.
Published: 2017

27. Metallic nanoparticle-based strain sensors elaborated by atomic layer deposition

Author: M. Le Berre, Daniel Thomas, Annie Malchere, Matthieu Bugnet, M. R'Mili, C. Malhaire, Siddardha Koneti, Lucian Roiban, Andrei Sabac, Rémi Rafael, Etienne Puyoo, INL - Dispositifs Electroniques ( INL - DE ), Institut des Nanotechnologies de Lyon ( INL ), École Centrale de Lyon ( ECL ), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon ( CPE ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ) -École Centrale de Lyon ( ECL ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ), Matériaux, ingénierie et science [Villeurbanne] ( MATEIS ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ), INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Wheatstone bridge, Physics and Astronomy (miscellaneous), [ SPI.MAT ] Engineering Sciences [physics]/Materials, Nanoparticle, Nanotechnology, 02 engineering and technology, Bending, 01 natural sciences, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Atomic layer deposition, law, 0103 physical sciences, Composite material, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Strain gauge, 010302 applied physics, Physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], 021001 nanoscience & nanotechnology, Pressure sensor, Gauge factor, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, 0210 nano-technology, Short circuit
Abstract: International audience; Platinum nanoparticle-based strain gauges are elaborated by means of atomic layer deposition on flexible polyimide substrates. Their electro-mechanical response is tested under mechanical bending in both buckling and conformational contact configurations. A maximum gauge factor of 70 is reached at a strain level of 0.5%. Although the exponential dependence of the gauge resistance on strain is attributed to the tunneling effect, it is shown that the majority of the junctions between adjacent Pt nanoparticles are in a short circuit state. Finally, we demonstrate the feasibility of an all-plastic pressure sensor integrating Pt nanoparticle-based strain gauges in a Wheatstone bridge configuration.
Published: 2017
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28. PEALD Platinum Nano-island SET Fabrication and Electrical Characterization

Author: Daniel Thomas, Etienne Puyoo, Le Berre, M., Liviu Militaru, Koneti, S., Annie Malchere, Lucian Roiban, Andrei SABAC, Khaled Ayadi, Céline Chevalier, Joëlle Gregoire, Francis Calmon, Brice Gautier, Inl, Laboratoire INL UMR5270, STI-IMM-LEG, Ecole Polytechnique Fédérale de Lausanne (EPFL), INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), 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), INL - Plateforme Technologique Nanolyon (INL - Nanolyon), and INL - Photovoltaïque (INL - PV)
Subjects: [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.MAT]Engineering Sciences [physics]/Materials, [PHYS] Physics [physics]
Abstract: 15-18 june 2017; International audience; no abstract
Published: 2017

29. Rapid Tomography in Environmental TEM: How Fast Can We Go to Follow the 3D Evolution of Nanomaterials in situ?

Author: Lucian Roiban, Thierry Epicier, Khan Tran, Voichita Maxim, Thomas Grenier, S. Koneti, Yue-Meng Feng, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Images et Modèles, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)
Subjects: 010302 applied physics, In situ, Materials science, Nanotechnology, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Nanomaterials, 0103 physical sciences, Tomography, 0210 nano-technology, Instrumentation, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2016
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30. Multi scale tomography of materials for Li‐ion battery electrodes

Author: Lucian Roiban, Victor Vanpeene, Eric Maire, Thierry Douillard, Aurélien Etiemble, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: Battery (electricity), Materials science, Scale (ratio), business.industry, Electrode, Optoelectronics, Tomography, business, ComputingMilieux_MISCELLANEOUS, Ion, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract: International audience
Published: 2016
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31. Electron tomography analysis of Pt/CeO2 catalyst powders synthesized by solution combustion

Author: Lucian Roiban, Siddardha Koneti, Thierry Epicier, Thanh-Son Nguyen, Mimoun Aouine, Franck Morfin, Laurent Piccolo, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), IRCELYON-Catalyse Hétérogène pour la Transition Energétique (CATREN), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), 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)-Institut de Chimie du CNRS (INC), IRCELYON-Microscopie (MICROSCOPIE), IRCELYON-Ingéniérie, du matériau au réacteur (ING), and IRCELYON, ProductionsScientifiques
Subjects: [SDE] Environmental Sciences, [SDE]Environmental Sciences, [CHIM.CATA] Chemical Sciences/Catalysis, 02 engineering and technology, [CHIM.CATA]Chemical Sciences/Catalysis, 010402 general chemistry, 021001 nanoscience & nanotechnology, 0210 nano-technology, 01 natural sciences, ComputingMilieux_MISCELLANEOUS, 0104 chemical sciences
Abstract: International audience
Published: 2016

32. 3D Chemical Distribution of Titania-Alumina Catalyst Supports Prepared by the Swing-pH Method

Author: Ovidiu Ersen, Loïc Sorbier, Charles Hirlimann, Lucian Roiban, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Titania, Materials science, Electric impedance tomography, X ray photoelectron spectroscopy, Inorganic chemistry, Alumina, Catalyst supports, 02 engineering and technology, 010402 general chemistry, Heterogeneous catalysis, 01 natural sciences, Catalysis, [SPI.MAT]Engineering Sciences [physics]/Materials, Inorganic Chemistry, X ray fluorescence, Chemical analysis, Physical and Theoretical Chemistry, Tomography, Hydrodesulfurization, Catalysts, Organic Chemistry, Chemical distribution, Chemical mapping, Swing, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Titania-alumina, Titania content, Electron tomography, Classical techniques, Titanium dioxide, 0210 nano-technology, Chemical distributions
Abstract: cited By 3; International audience; Analytical electron tomography combined with more classical techniques such as X-ray fluorescence and X-ray photoelectron spectroscopy were performed with a series of titania-alumina catalyst supports prepared by using the swing-pH method. The bulk proportion of titania and alumina was varied along the sample series. It was observed that, independently of this bulk proportion, only 30 % of the surface of the grains of the resulting catalysts was titania covered. It was also shown that the porosity of the material was driven by alumina, and for low titania contents, alumina formed a layer close the surface of the grains. At concentrations higher than 30 % titania, the layer was broken and aggregates covered by alumina were formed, which may have an impact on catalysis if these materials are used as supports for an active phase. © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Published: 2016
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33. Advanced three dimensional characterization of silica-based ultraporous materials

Author: E Maire, Lucian Roiban, Geneviève Foray, Dris Ihiawakrim, A Perret, Karine Masenelli-Varlot, Bernard Yrieix, Q Rong, Consortium Lyon Saint-Etienne de Microscopie (CLYM), École normale supérieure - Lyon (ENS Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), EDF R&D (EDF R&D), EDF (EDF), École normale supérieure de Lyon (ENS de Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nanostructure, Materials science, General Chemical Engineering, Aerogel, Nanotechnology, 02 engineering and technology, General Chemistry, Porosimetry, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, 0104 chemical sciences, Characterization (materials science), [SPI.MAT]Engineering Sciences [physics]/Materials, Thermal conductivity, Chemical engineering, Gas pycnometer, Particle, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; Whatever the field of application (building, transportation, packaging, etc.) energy losses must be reduced to meet the government target of a 40% cut in CO 2 emissions. This leads to a challenge for materials scientists: designing materials with thermal conductivities lower than 0.015 W m À1 K À1 under ambient conditions. Such a low value requires reducing air molecule mobility in highly porous materials, and silica-based superinsulation materials (SIM) made of packed nanostructured silica or aerogel are good candidates for this purpose. However, the native nanostructure of silica has never been imaged or characterized up to now, making SIM optimization quite difficult. In this paper, three nanostructured commercial silica samples prepared by different synthesis methods were analysed and quantified using advanced electron tomography, N 2 physisorption, mercury porosimetry and helium pycnometry. It was demonstrated that 3D images yield a much finer description of the microstructure (particle, aggregate and pore) compared to global measurements. For the samples studied, silica particle size is dependent on the synthesis method, increasing with pore diameter size. The smallest silica particles were obtained by the sol–gel method which also provides the smallest pore diameters, the smallest and rather spherical aggregates, and the lowest thermal conductivity. The pyrogenic and precipitated samples studied presented bigger silica particles with higher pore diameters and thus higher thermal conductivities. 3D image driven characterization opens up new synthesis opportunities for silica.
Published: 2016
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34. Shadow Edge Lithography coupled with ALD growth of Alumina and Platinum Nanoislands Towards the Fabrication of Single Electron Transistors

Author: Daniel Thomas, Etienne Puyoo, Martine LE BERRE, Liviu Militaru, Koneti, S., Annie Malchere, Lucian Roiban, Andreï Sabac, David Albertini, Francis Calmon, Institut de cardiologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Laboratoire des matériaux et du génie physique (LMGP ), Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), INL - Dispositifs Electroniques (INL - DE), Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), 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 de la matière (LPM), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Inl, Laboratoire INL UMR5270
Subjects: [SPI]Engineering Sciences [physics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI] Engineering Sciences [physics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Abstract: 19-22/09/2016; International audience; no abstract
Published: 2016

35. Magnetic Core−Shell Nanoparticles from Nanoscale-Induced Phase Segregation

Author: Xavier F. Le Goff, Sophie Carenco, Lucian Roiban, Clément Sanchez, Cédric Boissière, Nicolas Mézailles, Jing Shi, Ovidiu Ersen, 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)-Ecole Nationale Supérieure de Chimie de Paris- Chimie ParisTech-PSL (ENSCP)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Hétéroéléments et Coordination (DCPH), and École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, General Chemical Engineering, Shell (structure), Nanoparticle, chemistry.chemical_element, Nanotechnology, General Chemistry, Core shell nanoparticles, Nickel, Magnetic core, chemistry, Chemical physics, Phase (matter), Materials Chemistry, [CHIM]Chemical Sciences, Nanoscopic scale
Abstract: International audience; Nanoscaling of the nickel phosphides profoundly alters their domains of stability. An original mechanism of “nanoscale-induced phase segregation” was uncovered in the present study: the appearance of two crystallized phases inside each single nanoparticle (here, Ni2P and Ni fcc), where the single-phase product (Ni3P) would have been preferred at the bulk scale. This behavior was obtained by reacting at low temperature (
Published: 2011
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35 results on '"Lucian Roiban"'

1. Development of a bio-inspired angular acceleration sensor : towards the non-invasive investigation of inner ear pathologies

2. Morphological changes of silica aged under environmental conditions by three-dimensional nanoscale quantifications

3. In-situ annealing transmission electron microscopy of plasmonic thin films composed of bimetallic Au-Ag nanoparticles dispersed in a TiO2 matrix

4. Real-time high-temperature scanning indentation: Probing physical changes in thin-film metallic glasses

5. Manganese oxidation states repartition in a channel‑like mesoporous zirconium oxide

6. Highly ductile amorphous oxide at room temperature and high strain rate

7. Fast electron tomography: Applications to beam sensitive samples and in situ TEM or operando environmental TEM studies

8. Shape-selective synthesis of nanoceria for degradation of paraoxon as a chemical warfare simulant

9. Quantitative Analysis of grafted CNT dispersion and of their stiffening of polyurethane (PU)

10. Electron tomography on latex particles suspended in water using Environmental Scanning Electron Microscopy

11. 2D & 3D in situ study of the calcination of Pd nanocatalysts supported on delta-Alumina in an Environmental Transmission Electron Microscope

12. Nanostructured silica used in super-insulation materials (SIM), hygrothermal ageing followed by sorption characterizations

13. Multiscale structure of super insulation nano-fumed silicas studied by SAXS, tomography and porosimetry

14. Multimodal biosensing on paper-based platform fabricated by plasmonic calligraphy using gold nanobypiramids ink

15. PEALD of Pt nanoparticles: towards the development of single electron transistors and flexible strain sensors

16. Very Fast Tomography in the (E)TEM to Probe Dynamics in Materials during Operando and In Situ Experiments

17. Uncovering the 3D Structure of Combustion-Synthesized Noble Metal-Ceria Nanocatalysts

18. Evaluation of noise and blur effects with SIRT-FISTA-TV reconstruction algorithm: Application to fast environmental transmission electron tomography

19. Electron Tomography of Plasmonic Au Nanoparticles Dispersed in a TiO2 Dielectric Matrix

20. Durability of silica aerogels dedicated to superinsulation measured under hygrothermal conditions

21. Hollow Beta Zeolite Single Crystals for the Design of Selective Catalysts

22. Three-Dimensional Analytical Surface Quantification of Heterogeneous Silica-Alumina Catalyst Supports

23. Thermal evolution of silver nanoparticles onto porous TiO 2 nanostructures

24. Flexible Platinum Nanoparticle-based Piezoresistive Transducers Elaborated by Atomic Layer Deposition

25. Pt nanoislands embedded in Al2O3 matrix: from ALD-based fabrication to structural to electrical characterization

26. Robocast zirconia-toughened alumina scaffolds: Processing, structural characterisation and interaction with human primary osteoblasts

27. Metallic nanoparticle-based strain sensors elaborated by atomic layer deposition

28. PEALD Platinum Nano-island SET Fabrication and Electrical Characterization

29. Rapid Tomography in Environmental TEM: How Fast Can We Go to Follow the 3D Evolution of Nanomaterials in situ?

30. Multi scale tomography of materials for Li‐ion battery electrodes

31. Electron tomography analysis of Pt/CeO2 catalyst powders synthesized by solution combustion

32. 3D Chemical Distribution of Titania-Alumina Catalyst Supports Prepared by the Swing-pH Method

33. Advanced three dimensional characterization of silica-based ultraporous materials

34. Shadow Edge Lithography coupled with ALD growth of Alumina and Platinum Nanoislands Towards the Fabrication of Single Electron Transistors

35. Magnetic Core−Shell Nanoparticles from Nanoscale-Induced Phase Segregation

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