Materials Literature
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Nanomedicine has vastly improved the treatment and diagnosis of many cardiovascular conditions such as atherosclerosis, myocardial ischemia, myocardial infarction, restenosis, and thrombosis. A few nanoparticle drug delivery systems that are currently being tested and used in clinical trials include lipid-based drug d…
Semiconductor nanomaterials are poised to revolutionize the field of electronics.Their lowcost synthesis and unique optoelectronic properties are aligned to the needs of modern industry.The miniaturization of semiconductor electronic components can achieve higher performance in a smaller volume, and the easily tailore…
A numerical model describing the liquid-liquid phase transformation of the nucleation, the diffusional growth, Ostwald coarsening and macro-transport phenomena was established based on Euler-Euler method. The microstructure development of Al-Bi alloys in different solidification rate has been simulated by coupling the…
Surface and inside of silicon (Si) spheres prepared by a powder melting method were investigated. The lattice constant of the inside of Si spheres was larger than that of the surface of Si spheres, which was due to interstitial atoms trapped at gettering sites. To obtain the evidence for existence of the impurities, c…
In the past decades, electronic devices are getting smaller and more powerful, following the Moore’s Law. Nevertheless, silicon-based field effect transistors are rapidly approaching their scaling limit. Thus, exploring new channel materials as well as novel device architectures are highly demanded for the further min…
Stearic acid was applied to modify the VO2 nanopowders, and the influence of modified medium, dosage of modifier, amount of activator, time of modification on the surface modification effect were studied. The modification parameters such as modifying agent and the conditions were optimized. The changes of Surface grou…
CoPt-C films were fabricated on silicon substrate by dc reactive magnetron sputtering followed by vacuum annealing. The effects of C additions and annealing temperature on the microstructure and magnetic properties were investigated. The as-deposited films had flat, compact surfaces and face-centered cubic structure,…
Exciton dissociation energy was obtained based on the comparison of thickness of the space charge region estimated from the measurement of capacitance of prepared Schottky diode and from the measurement of photovoltage spectra. While the capacitance measurements provide information about the total width of the space c…
Shuttle-like CuO has been synthesized by treating commercial Cu(OH)2 powder at room temperature for an appropriate time. As anode material of lithium-ion batteries, shuttle-like CuO exhibits high specific capacity, high stability, and good rate performance, superior to commercial CuO powder. The shuttle-like CuO exhib…
Les prothèses existent depuis plusieurs milliers d’années. Initialement, il s’agissait de matériaux de suppléance pour remplacer des membres (jambe, pied, main) ou pour la chirurgie (fil de suture). Les matériaux utilisés ont évolué mais ils n’avaient pas été initialement créés pour des applications médicales. Récemme…
Using the method of few-body physics, the solutions of ground state and some low-lying excited states [such as 1s -1s , 1s -1p and 1s -1d ] of electron pair in a semimagnetic quantum dot have been obtained. The dependence of the confined energies of the electron pair in a semimagnetic quantum dot is studied as a funct…
With Energy shortage becoming increasingly severe, the application of high-temperature superconducting material is considerable prospects. Economic, efficient and energy-saving preparation techniques become the key factors for the large-scale applications of REBa2Cu3O7-δ superconducting coated conductors. A rapid rout…
Banco de dados do artigo "Zoneamento espaço-temporal da umidade de equilíbrio de painéis de madeira no Brasil"
The present thesis deals with molecular dynamics computer simulations of heterogeneities in copper–zirconium metallic glasses, ranging from intrinsic structural fluctuations to crystalline secondary phases. These heterogeneities define, on a microscopic scale, the properties of the glass, and an understanding of their…
Spin diffusion in the finite magnetic heterojunction was explored considering the spin dependent conductivity. In organic semiconductor spintronic devices, the up-spin and down-spin polarons have different density once spin injection happens from ferromagnetic electrodes into organic semiconductors. The difference res…
Nanoparticles exhibit very distinct characteristics from their bulk counterparts, therefore there is great interest in studying the properties of these nanomaterials for various applications such as biophotonics, photovoltaics, and nanomedicine. Miniature devices not only provide the conveniences of small physical foo…
Nanoparticles can be broadly defined as a material consisting of hundreds to a few thousand atoms with the size below 20 nm. Nanoparticles have been paid considerable attention, due to the application ranging from magnetic recording media, catalysts, and the field of photonics and bioengineering. Our research group ha…
In this paper, lattice constants, elastic properties and electronic structure of δ-Pu are investigated by means of plane wave pseudo-potential method (PWP) based on density function theory (DFT). A variety of density functional theory methods have been adopted to calculate the crystal structure and elastic property of…
For how trivial or provocative it can sound, the best neutron spectrometer in the world does not produce science by itself. By definition of Materials Science, neutron scattering data on engineering materials must be used as a tool to understand, and even tailor, materials performance. In order for this to happen, it…
Sc0.88-xLu0.05VO4:Eu3+0.07,Bi3+x(0≤x≤0.05) red phosphors were synthesized by solid state reaction at 1200°C for 3h. The structure, morphology and luminescence spectra of samples are investigated by X-ray diffraction (XRD), Scanning electron microscope (SEM) and fluorescence spectrophotometer, respectively. The samples…