Materials Literature
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We describe the synthesis of porous spherical nanoaggregates derived by the controlled growth of zeolite LTA on a poliamidoamine (Pamam) dendrimer acting as nano-template. The presence of a strong condensed cationic Na + charge all around the dendrimers, which is responsible for the intense electrostatic inter-particl…
We introduce two types of phase compensation mechanisms to metamaterials for superlensing. Such superlenses not only have super resolving power, but also have the basic functions of a conventional optical lens - Fourier transform.
Results are presented of resistivity change measurements made on a model Fe-Cr-Ni-Ti-C austenitic alloy irradiated in the Fast Flux Test Facility to doses ranging from 1.87 to 67.8 dpa. Two different electrical resistivity measurement systems were developed to overcome problems associated with examination of small mic…
TiO2 films were deposited by DC magnetron sputtering under various discharge gas pressures and annealed at various temperatures. The structure of the films was investigated with focus on porosity, which was evaluated quantitatively by density and effective surface area. Furthermore, the H2 sensing property of the film…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text W. H. Southwell, "Speed of Light and Angle of Propagation in an Absorbing Medium," in Optical Interference Coatings, OSA Technical Digest (Optica Publi…
The infinite U Hubbard model, which excludes double occupancy of electrons on a lattice site, can be considered as an exactly solvable non-interacting orthofermion model. We obtained several thermodynamic and transport properties like specific heat, entropy, magnetization, magnetic susceptibility and thermoelectric po…
The results of experimental investigations into the resonance features of the high azimuthal electromagnetic oscillations of HE and EH type in the composite dielectric disk resonator (CDDR) for the millimeter wavelength band are given. The CDDR consists of a dielectric disk resonator (DDR) and an auxiliary dielectric…
ZnO films and their Er-doped films oriented in c-axis were prepared on silicon substrate (100) by frequency magnetron sputtering method, and they were taken in heat treatment. Then, the influences on the surface morphologies and crystal structures of the film samples, which were made by the different annealing tempera…
France’s experience in the management of radioactive waste is supported by forty years of operational activities in the field of surface disposal. This feedback is related to three disposal facilities: Centre de la Manche disposal, not far away Cherbourg, from design to post-closure facility. Centre at Soulaines-Dhuys…
We fabricated an organic solar cell where the electrodes are metallic layers that form an optical cavity. To be able to optically enhance the efficiency, we used a high fluorescence quantum yield material as PPV.
We have developed a molecular mechanics approach to study surface modification and its effect on the mechanics of interfaces in nanocomposites. Investigation of this topic is motivated by the exceptional mechanical properties that have been demonstrated in a new generation of nanomaterials. The systems studied mainly…
Nanoscale engineering of functional-materials is reviving quadratic-nonlinear optics in conjunction with new quantitative multiphoton imaging-techniques allowing phase and polarization-resolution. It permits full tensor characterization of individual nanoparticles as well as mapping of artificial and bio-environments.
Si nanocrystal (NC) in SiO2 matrix normally exhibit quasi-direct interband transitions due to band mixing of direct and indirect gaps in a nanoscale environment. Compared to direct bandgap III-V or II-VI semiconductor nano-particles, the radiative recombination coefficient of Si is rather low at room temperature B ≈ 1…
Wear of steel at high temperature is a complex phenomenon. Quantification of wear per event is an important aspect in assessing life of a component. Necessity of economics and light weighted components compels to study the system under common parameters and extrapolate the results. Temperatures/pressures inside a gun…
Pellet injection to D-T burning plasmas was analyzed using an integrated equilibrium-transport simulation code, TOTAL, for both tokamak and helical reactors. The condition of pellet injection required for the formation of an internal transport barrier and the dependence of plasma parameters in the steady self-burning…
In this paper, a hybrid atomistic-structural element for studying the mechanical behaviour of carbon nanotubes is introduced. Non-linear formulation for this element is derived based on empirical inter-atomic potentials. This hybrid element is capable of taking into account the non-linear nature of inter-atomic forces…
Structural, spectroscopic and magnetic properties of pure BiFeO3and Mn-doping BiFeO3nanoparticles synthesized by precipitation method were studied. The synthesized samples were characterized using X-ray diffraction (XRD), transmission electron microscopy (SEM), X-ray absorption near edge structure spectroscopy (XANES)…
This paper overviews the R&D activity of Water Cooled Ceramic Breeder (WCCB) Blanket in Japan. Japan is performing R&D of WCCB Blanket as the primary candidate of the breeding blanket for the fusion DEMO reactor. Regarding the development of blanket module fabrication technology, a real scale First Wall (FW) was fabri…
Piezoelectrically excited langasite (La3Ga5SiO14) transducers are studied by laser doppler vibrometry (LDV) at temperatures up to 860 °C. The scope of our research is to design and realize different resonator concepts based on this material. The properties of langasite tuning forks and cantilevers are subject of our i…
Foram realizados ensaios de fadiga por fretting na liga AA7050-T7451, com cargas de contato e tensões alternadas de fadiga constantes para todos os ensaios realizados.Foi apenas variada a tensão média aplicada, responsável pela variação da tensões cíclicas máxima e mínima obtidas para cada condição de ensaio.Tais resu…