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Dynamic mechanical behavior of multilayer graphene via supersonic projectile penetration

Jae‐Hwang Lee、Phillip E. Loya、Jun Lou 等 4 位作者2014-11-28Science

Multilayer graphene is an exceptional anisotropic material due to its layered structure composed of two-dimensional carbon lattices. Although the intrinsic mechanical properties of graphene have been investigated at quasi-static conditions, its behavior under extreme dynamic conditions has not yet been studied. We rep…

Diamond and Carbon-based Materials ResearchIon-surface interactions and analysisGraphene research and applications

Catalytically active Au-O(OH) x - species stabilized by alkali ions on zeolites and mesoporous oxides

Ming Yang、Sha Li、Yuan Wang 等 10 位作者2014-11-28Science

We report that the addition of alkali ions (sodium or potassium) to gold on KLTL-zeolite and mesoporous MCM-41 silica stabilizes mononuclear gold in Au-O(OH)x-(Na or K) ensembles. This single-site gold species is active for the low-temperature (<200°C) water-gas shift (WGS) reaction. Unexpectedly, gold is thus similar…

Nanomaterials for catalytic reactionsCatalytic Processes in Materials ScienceElectrocatalysts for Energy Conversion

Liquid organic and inorganic chemical hydrides for high-capacity hydrogen storage

Qi‐Long Zhu、Qiang Xü2014-11-28Energy & Environmental Science

In this review, we survey the research progress in catalytic hydrogen generation from, and the regeneration of, diverse liquid-phase chemical hydrogen storage materials, including both organic and inorganic chemical hydrides.

Hybrid Renewable Energy SystemsHydrogen Storage and MaterialsAdvanced Battery Materials and Technologies

Turning a surface superrepellent even to completely wetting liquids

Tingyi Liu、Chang‐Jin Kim2014-11-28Science

Superhydrophobic and superoleophobic surfaces have so far been made by roughening a hydrophobic material. However, no surfaces were able to repel extremely-low-energy liquids such as fluorinated solvents, which completely wet even the most hydrophobic material. We show how roughness alone, if made of a specific doubly…

Adhesion, Friction, and Surface InteractionsSurface Modification and SuperhydrophobicityFluid Dynamics and Heat Transfer

Mechanical properties of phospholipid coated microbubbles

Julia Kathleen Morris2014-11-27ERA

Phospholipid coated, inert gas filled microbubbles (MBs) are currently in widespread use in medical applications for the enhancement of diagnostic ultrasound images, and they are promising candidates for use in the area of targeted drug/gene delivery and uptake. As phospholipid coated MBs were developed for use with d…

Collagen: Extraction and CharacterizationUltrasound and Hyperthermia ApplicationsFluid Dynamics and Mixing

Characterization and automatic classification of electrical activities of uterus

Sonja Libenšek2014-11-27OpenAlex

Nowadays, prediction of preterm birth is still uncertain and numerous scientists are searching for methods to improve its predictability. Some of the current researches are based on the analysis of electrical activity of uterus which contains rich information about it's electrophysical properties. We developed algorit…

Infant Health and DevelopmentNon-Invasive Vital Sign MonitoringSolid-state spectroscopy and crystallography

Study on Tensile Failure of Highly Heterogeneous Brittle Materials

Manish Vasoya2014-11-27HAL (Le Centre pour la Communication Scientifique Directe)

Le developpement d’outils predictifs qui relient l’echelle microscopique a l’echelle macroscopique dans le cadre de la rupture fragile est le defi majeur de cette these. Dans le cas d’une fissure plane se propageant de facon quasistatique, en mode I, dans un materiau faiblement heterogene et invariant dans la directio…

Metallurgy and Material FormingMicrostructure and mechanical propertiesMetal Forming Simulation Techniques

Plasticity of metallic nanostructures : molecular dynamics simulations

Con Healy2014-11-27ERA

During high speed cutting processes, metals are subject to high strains and strain rates. The dynamic nature of the deformation during high speed cutting makes it difficult to detect atomic scale deformation mechanisms experimentally. Atomic scale plasticity behaviour is often studied using various micromachining tech…

Microstructure and mechanical propertiesMetal and Thin Film MechanicsBoron and Carbon Nanomaterials Research

Photopolymérisation radicalaire en miniemulsion

Florent Jasinski2014-11-27OpenAlex

Les problématiques et potentialités de la photopolymérisation radicalaire en miniémulsion ont été discutées, en partant de l’étude des propriétés optiques des miniémulsions de monomère jusqu’à la synthèse de nouvelles nanoparticules polysulfures semi-cristallines par réaction thiol-ène. En premier lieu, l'interaction…

Synthesis and properties of polymersPhotopolymerization techniques and applicationsAdvanced Polymer Synthesis and Characterization

Transport à travers un canal quantique élémentaire : action du circuit, quantification de la charge et limite quantique du courant de chaleur

S. Jézouin2014-11-27OpenAlex

Ce mémoire de thèse présente trois expériences portant sur le transport quantique dans les conducteurs cohérents à l’échelle élémentaire du canal de conduction. La première étudie comment le transport d’électricité dans un canal est affecté lorsque le canal est inséré dans un circuit modélisé par une impédance linéair…

Advanced Thermodynamics and Statistical MechanicsThermal properties of materialsQuantum and electron transport phenomena

Les séquences mafiques-ultramafiques de Samapleu et leur minéralisation en Ni-Cu-EGP : un dyke éburnéen (2,09 Ga) du complexe lité Yacouba (domaine archéen de Man - Côte d'Ivoire)

Gnamba Emmanuel Gouedji2014-11-27OpenAlex

Le complexe mafique–ultramafique lité Yacouba est intrusif au sein des granulites gneissiques du domaine archéen de Man (3,6-2,78 Ga) dans la région de Biankouma-Sipilou (ouest de la Côte d'Ivoire). Dans le secteur de Samapleu, il est composé de trois entités ; dépôt principal de Samapleu (SM), l’Extension 1 de Samapl…

Geological and Geochemical AnalysisGeochemistry and Elemental AnalysisClay minerals and soil interactions

Study on Tensile Failure of Highly Heterogeneous Brittle Materials

Manishkumar Laxmanbhai Vasoya2014-11-27OpenAlex

Etude de la rupture des matériaux fragiles fortement héterogènes Le développement d’outils prédictifs qui relient l’échelle microscopique à l’échelle macroscopique dans le cadre de la rupture fragile est le défi majeur de cette thése. Dans le cas d’une fissure plane se propageant de façon quasistatique, en mode I, dan…

Numerical methods in engineeringMicrostructure and mechanical propertiesComposite Material Mechanics

Photodégradation des résines naturelles : application au domaine artistique

Clara Azémard2014-11-27OpenAlex

Cette thèse porte sur la dégradation photochimique des résines naturelles utilisées dans la fabrication de vernis à tableaux. Différentes résines ont été choisies pour notre étude : la sandaraque, le copal de Manille, la colophane, le mastic et la dammar. Des vernis à tableaux ont été fabriqués à partir de ces résines…

Polymer composites and self-healingPhotopolymerization techniques and applicationsCultural Heritage Materials Analysis

The sampapleu mafic-ultramafic sequences and its Ni-Cu-PGE mineralizations : an eburnean (2.09Ga) dyke to the yacouba layered complex (man archean field western ivory coast)

Gnamba Emmanuel Gouedji2014-11-27theses.fr (ABES)

Le complexe mafique–ultramafique lité Yacouba est intrusif au sein des granulites gneissiques du domaine archéen de Man (3,6-2,78 Ga) dans la région de Biankouma-Sipilou (ouest de la Côte d'Ivoire). Dans le secteur de Samapleu, il est composé de trois entités ; dépôt principal de Samapleu (SM), l’Extension 1 de Samapl…

Geochemistry and Elemental AnalysisClay minerals and soil interactionsGeological and Geochemical Analysis

Composite graphite iron components for engines with improved properties tribological.

Paulo Henrique Ogata2014-11-27LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)

A constante busca por motores com maior eficiência energética, requer a introdução de novos materiais ou inovações nas rotas de fabricação dos materiais existentes. O presente trabalho busca, a partir de rotas de tratamento térmico, soluções para minimizar o desgaste originado no contato entre corpos metálicos em comp…

Metal Alloys Wear and PropertiesPowder Metallurgy Techniques and MaterialsMicrostructure and Mechanical Properties of Steels

Computational study of radiation damage and impurity effects in iron based alloys

Graham J. Galloway2014-11-27ERA

Molecular dynamics techniques are used to explore metals at an atomic level. The focus of the studies is the effects of irradiation on a metallic system. Ion surface bombardment effects, bulk cascades and interaction with voids and bubbles in bulk are studied. In the first section a study of a copper <110> surface bei…

Nuclear reactor physics and engineeringGraphite, nuclear technology, radiation studiesNuclear Materials and Properties