Materials Literature
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In this study, one-dimensional (1D) uniform Cu(OH)2 nanobelts have been synthesized by a facile wet chemistry method. The effect of different synthesis parameters on the morphologies of the target products was systematically studied. The uniform nanobelts can be easily controlled by different reaction time and tempera…
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Abstract C2H12N8O8Mg, orthorhombic, Pbcn, a = 9.858(8) Å, b = 6.852(5) Å, c = 18.276(3) Å, V = 1185.6(16) Å3, Z = 4, R gt(F) = 0.0245, wR ref(F 2) = 0.0693, T = 293(2) K.
The cover picture shows the crystal structure of a PdII derivative belonging to a new family of metal complexes supported by meso-tetraaryl-substituted porphyrin ligands. Thermal studies reveal that this compound behaves as a liquid crystal material, exhibiting a columnar mesophase under polarized light. Both the numb…
In this study, hydrogen absorption process was analyzed by using a numerical simulation, which included heat transfer, equilibrium pressure, and heat generation from metal hydride. The dimension of the metal hydride cartridge is 50 mm x 60 mm x 5 mm. The cartridge has a serpentine channel in which metal hydride is pac…
The cover picture shows ternary copper silver selenide nanotubes prepared from copper selenide nanotubes through a simple cation-exchange reaction. The new material was explored as high-performance counter electrodes in quantum-dot-sensitized solar cells and achieved high conversion efficiency (η=5.61 %). Details are…
This paper describes the hydrogen infratsructure and hydrogen fuel cell shuttle bus demonstration programs that the Hawaii Natural Energy Instiute is conducting on the Island of Hawaii.
The proximity effect is theoretically studied for thin and massive pure ferromagnet/high-temperature superconductor (F/HTS) contacts. It is shown that there is no continuous matching between the s-wave and d-wave pair amplitudes at the HTS/F boundary. In thin HTS/F nanostructures, the exchange field strongly suppresse…
À Profa.Dra.Márcia Martins Marques, coordenadora do Programa de Pós-Graduação em Dentística
A novel thermodynamic and electrochemical framework for the analysis of irreversible fuel cell heat engine systems is introduced in this paper and used to begin to explore the possibility of operating these systems at constant voltage operation and at constant voltage operation with constant power operation through su…
Polymer electrolyte fuel cells (PEFCs) have recently increased in popularity in domestic and automobile use. However, the spread of miniature fuel cells doesn’t advance though they are expected to be the power supply of mobile electronic devices. Though a carbon is generally used to make the PEFC separator, it is unsu…
With potential practical applications of the outcomes of this study in the automotive industry, the present work aims at assessing the effect of 20-hour plasma-nitriding on fatigue resistance of 50CrV4 low-alloy steel samples. The quenched and tempered low-alloy steel samples underwent plasma-nitriding at 500°C using…
Das Co2FeSi/GaAs-Hybridsystem wurde hinsichtlich seiner Eignung für Anwendungen in der Spintronik untersucht. Die Heusler-Legierung Co2FeSi ist ein aussichtsreicher Kandidat für derartige Anwendungen, weil der vollständig geordneten Kristallphase Halbmetallizität, d. h. eine Spinpolarisation von 100% an der Fermi-Ener…
Liquid dispensing and writing in the extremely small size regime are important for applications in many current technologies, such as micro/nano fabrication, biological/chemical patterning and analysis, and drug discovery. Most of current dispensing/writing methods can be sorted into a category of liquid flowing throu…
Quantitative aspects of hyperpolarized NMR are analyzed in the present work, and it is shown theoretically and experimentally that measured "apparent" signal enhancements could deviate significantly from real enhancements of polarization. Expressions are given as a function of spin count to deduce real enhancements fr…
The paper is devoted to investigations on influence of laser treatment regimes of gas-thermal and adhesive coatings from self-fluxing powders on iron basis and after melting with modifying plaster on their roughness and phase composition. One of mathematical planning methods that is a complete factor experiment method…
ABSTRACT Bisphthalamic acids of tetrahydrophthalic anhydride (THPA), tetrachlorophthalic anhydride (TCPA), tetrabromophthalic anhydride (TBPA), and 4,4′‐diamino diphenylsulfone (DDS), 4,4′‐diaminodiphenylether (DDE), and 4,4′‐diaminodiphenyl methane (DDM) were synthesized and used as hardeners for multifunctional epox…
The plasmon-enhanced second harmonic generation in the subwavelength neutral metal cubic nanoparticles is calculated for the first time in the hydrodynamic and cold plasma approximations. The theory is developed that takes into account all singularities of the electromagnetic field at the cubic nanoparticle surface. T…
Os nervos periféricos são extensões do sistema nervoso central e responsável pela interação das atividades entre as extremidades, em suas funções sensitivas e motoras. São vulneráveis aos mesmos tipos de traumas que afetam outros tecidos: contusão, compressão, esmagamento, estiramento, avulsão e laceração. As lesões d…
Atomically thin semi-conductors are characterized by strongly bound excitons which govern the optical properties of the materials below and near the band edge. Efficient conversion of photons into electrical current requires, as a first step, the dissociation of the exciton into free electrons and holes. Here we calcu…