Materials Literature
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Abstract : It has been previously reported that the system of embedding single Ptatom in the N-vacancy site on TiN\(100) surface (Pt/TiN) could be a promising catalyst for proton exchange membrane fuel cells (PEM FCs). The adsorption properties of molecules on Pt/TiN are an important step, when it is incorporated as t…
Certain types of porphyrins can be used as achiral agent for determination of enantiomeric excess (ee) of chiral molecules. Particular organic chiral molecule (guest) and porphyrin (host) form host-guest complex while inducing nonequiv- alency of particular proton resonances in symmetrical host. It causes splitting of…
Abstract : Recent extensive interest in graphene associated with its unusual properties has motivated the development of new composite materials for nanoelectronics, supercapacitors, batteries, photovoltaics, and related devices. The conjugated ladder polymer poly(benzimidazobenzophenanthroline) (BBL) has received int…
High strength, high toughness and good weldability are the major demanding factors for engineering structural materials uses in naval construction. HSLA-80 steel is essentially low carbon micro alloyed and copper strengthened high strength steel typically used for ship building application. The hydrogen presence in hi…
Large negative oxygen-isotope (16O/18O) effects (OIE's) on the static spin-stripe ordering temperature T_so and the magnetic volume fraction V_m were observed in La_(2-x)Ba_xCuO_4 (x = 1/8) by means of muon spin rotation experiments. The corresponding OIE exponents were found to be alpha_(T_so) = -0.57(6) and alpha_(V…
International audience
accurate composition, aside Q1 quadrupoles.The analysis shows a small amount of absorbed dose and DPA (about 30 kGy for the dose and 10 -6 DPA, scaled at 3000 fb -1 ).Such values will not have serious impact on the performance of the superconducting links.Neither the neutron induced transmutation of 10 B is a concern.…
International audience
Graphene oxide (GO) is a material of both fundamental and applied interest. Elucidating this complex material is crucial to both control its physical chemical properties and enable its applications in technology. Graphene oxide films synthesized from epitaxial graphene on silicon carbide constitute a particular -- sim…
International audience
International audience
The role of doping Fe on the structural, magnetic and dielectric properties of frustrated antiferromagnet YMn1-xFexO3 (x less than or equal to 0.5) has been investigated. The neutron diffraction analysis shows that the structure of these polycrystalline samples changes from hexagonal phase (space group P63cm) to ortho…
Dispositifs électroniques et mécaniques en graphène sous environnement optimal : du graphène suspendu aux hétérostructures graphène/nitrure de bore Le graphène possède un gaz bidimensionnel de porteurs de charge stable et exposé à l'environnement sans aucune protection. Par conséquent, ses performances électriques son…
The dynamic response and structural safety of a segmental precast concrete box-girder bridge during construction are investigated. The bridge is realized by means of a balanced cantilever approach where bridge segments are sequentially erected to form deck spans counterweighted about a single support. The segments are…
Schlüsselwörter Kontrastmittel-verstärkter Ultraschall - ateriosklerotische Plaque - Vasa vasorum - Endoleak - Niereninfarkt - Muskelperfusion
A prediction model for the life of polyethylene (PE) has been developed as a function of chlorine dioxide concentration and pressure. It can be coupled with an existing hydraulic model covering chlorine dioxide residuals and pressure values in the network. It allows a quick identification of the areas of highest PE fa…
The analytical approach to the multi-state lasing phenomenon in undoped and
The study presented in this paper arises from the general necessity of developing simulation tools at the scale of industrial processes or natural phenomena to describe coupled mechanisms governing heat and mass transfer and fluid flow in divided media at a much smaller scale. The use of the volume averaging method wi…
A rate-independent model for the quasistatic evolution of a magnetoelastic thin film is advanced and analyzed. Starting from the three-dimensional setting, we present an evolutionary $Γ$-convergence argument in order to pass to the limit in one of the material dimensions. By taking into account both conservative and d…
North Carolina State University Theses Textile Engineering, Chemistry and Science.