Materials Literature
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In this work, adsorption of O on Ni(111) surface with p(2Ã2) configuration and coverage value of 0.25 ML is investigated using Density Functional Theory (DFT). First, using structural optimization gives 1.87 Ǻ and 1.17 Ǻ, respectively for Ni-O bond length and distance of O from the surface. In order to obtain harmon…
The effect of electron beam (EB) irradiation on the thermal and tensile properties of unmodified and modified linear low density polyethylene/poly(vinyl alcohol) (LLDPE/PVA) blends with trimethylolpropane triacrylate (TMPTA) were investigated irradiated at 50, 100 and 150 kGy. The LLDPE/PVA blends were prepared by mel…
Two groups of technologies, specifically those for pretreatment and for processing of associated petroleum gases, were described. One group includes technologies based on deep adsorptive drying and desulfurization. The other group integrates technologies used for processing of associated petroleum gas into aromatic hy…
SiO 2 thin films were prepared on stainless steel substrate by RF reactive magnetron sputtering. Their microscopic surface morphology was characterized by atomic force microscope (AFM) and static contact Angle (SCA) was applied to evaluate hydrophilicity of films. It was found that SiO 2 thin films showed super hydrop…
La preparación de nanofibras por electrohilado está ganando mucho interés en la actualidad debido a su posible aplicación como sistemas de liberación controlada de fármaco. La incorporación del compuesto activo en la matriz polimérica de las fibras permite su protección frente a los procesos degradativos del organismo…
In this paper we study the electrical and thermal behaviour of future on-chip interconnects, where carbon nanotube bundles are assumed to replace conventional materials in realizing vertical vias. The model adopted here describe the bundles through a circuit equivalent representation, whose parameters takes into accou…
Abstract Conducting polymers are finding new application areas in energy storage devices, optoelectronics, actuators etc. Iodine doped semiconducting prevulcanized natural rubber latex (RVNRL) is a potential candidate for many such applications. We had already demonstrated for the first time that pre-vulcanized NR lat…
The temperature dependence of the liquid structure factor S(k) of dense monatomic fluids, and especially a variety of liquid metals, is studied by combining thermodynamics and fluctuation theory in the long wavelength limit k → 0. Emphasis is placed on the connection of with thermal expansivity. Reference here is then…
X-ray diffraction patterns in a thin crystal are investigated by numerical simulation and experimental section topography for the case when the screw dislocation axis is parallel to the dislocation vector. The strongly distorted region near the dislocation core is found to operate like an X-ray mirror wheninteracting…
The present study described the effect of the starting NCO/OH molar ratio on the structure and properties of castable polyurethanes based on polytetrahydrofuran glycol (PTMG) and 2,4- toluene diisocyanate (TDI). The structural was tested by SEM. The result showed that higher starting NCO/OH molar ratio can lead to hig…
The transmission properties of polycrystalline transparent ceramics are influenced by the chemical composition and the microstructure of the material. The fundamental optical mechanism of transparent ceramics and the influencing factors on transmission properties were discussed in this paper. The Mie theory for light…
Under open-system hydrothermal conditions, the observed growth habit for mullite composites is columnar. Based on theoretic calculations, performed with the Cambridge serial total energy package, of mullite crystal surface energies for facets (001), (210), (110), and (120), we analyze and discuss the relationship betw…
The deposition of coatings on the surface of carbon fiber will be helpful to their appli-cations. However, they are unsuitable to be deposited due to their low surface free energies, poor wettability and poor adhesions. The objective of this work is to modify carbon fibers by Dielect-ric barrier discharges (DBD) in am…
El articulo presenta el cambio que experimentan dos arcillas en sus propiedades indice de expansion yresistencia a la compresion inconfinada cuando se someten a altas temperaturas 150 225 y 300 C durante tres tiempos de exposicion 1 7 y 15 dias Ademas se estudio si las arcillas recuperan las propiedades mencionadas de…
Cuprous oxide (Cu2O) thin lms were deposited by radio frequency sputtering technique on fused silica substrates. The X-ray diraction study of the Cu2O samples showed reections from ( The samples were then annealed at 1008 K in nitrogen (N2) atmosphere. Annealed samples indicated strain relaxation. The samples were the…
Simultaneous measurements of electron and ion transfers were performed in an all solid ion-transfer device made of transition metal cyanide films, indium–tin oxide (ITO)/Na x Ni[Fe(CN) 6 ] 0.68 ·5.1H 2 O (NNF68)/Na x Co[Fe(CN) 6 ] 0.90 ·2.9H 2 O (NCF90)/ITO, against time ( t ) and temperature ( T ). At 330 K, the curr…
Gloveboxes used for plutonium fuel development and fabrication are eventually dismantled for replacement. Since equipment interior and the inner surface of gloveboxes are contaminated with radioactive materials, glovebox dismantling is performed by workers wearing an air fed suit with mechanical tools in a plastic enc…
The current generation of portable, un-cooled infrared imaging devices utilizes thin-film materials with large thermal coefficients of resistivity. Incoming photons are absorbed by the material, converted into heat, and result in a decrease in the resistivity of the thermal sensing layer. Vanadium oxide thin films are…
The phase transformation and microstructure in solution-treated Ni50Ti45Ta5shape memory alloy have been investigated. Two different second-phase particles, (Ti,Ta)2Ni and a tantalum-rich solid solution (β-Ta) mostly located at grain boundaries are observed. The results indicate that the Ta atoms are suggested to repla…
The image shows an illustration of the modular nanosystem developed for the controlled photorelease of molecular payloads, induced by yellow-green laserlight. Peptide-coated 30-nm gold nanospheres are covalently conjugated to molecular payloads by standard click chemistry, via a 1,2,3-triazole-ring linker. The photore…