Materials Literature
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In the crystal of the title polymeric compound, [Cu(2)(SO(4))(2)(C(5)H(5)N(3)O)(2)(H(2)O)(4)](n), two independent Cu(II) atoms are located on individual inversion centers. One Cu(II) atom is coordinated by four water mol-ecules and two pyrazine-2-carboxamide ligands in a distorted O(4)N(2) octa-hedral geometry; the ot…
Nioboaeschynite-(Ce), ideally Ce(NbTi)O(6) [cerium(III) niobium(V) titanium(IV) hexa-oxide; refined formula of the natural sample is Ca(0.25)Ce(0.79)(Nb(1.14)Ti(0.86))O(6)], belongs to the aeschynite mineral group which is characterized by the general formula AB(2)(O,OH)(6), where eight-coordinated A is a rare earth e…
Molecular dynamics simulation is carried out for liquid SiO 2 at pressure ranged from zero to 30 GPa and by using BKS, Born–Mayer type and Morse–Stretch potentials. The constructed models reproduce well the experimental data in terms of mean coordination number, bond angle and pair radial distribution function. Furthe…
Natural fiber reinforced polymer composites have gained their popularity in the composite research because of versatility and diversified nature of their applications (Gay et al., 2003). This is due to a range of potential advantages of natural fibers, especially with regard to their environmental performance. Natural…
Size-selected palladium nanoclusters have been produced by dc sputtering and inert gas condensation technique using mixtures of argon and helium gases. By controlling the source parameters, it was possible to produce Pd nanoclusters with size in the range of 2-10 nm. Transmission electron microscopy (TEM) images were…
Nanotechnology is a new and specific method for therapy of diseases. Nanosilver particle is one of the functional fields of nanotechnology. It has been shown that these nanoparticles have antibacterial and antifungal properties. Different studied have been shown that nanoparticles may have important role in medicine.…
The quest for novel low-dimensional materials has led to the discovery of graphene and thereafter, a tremendous attention has been paved in designing of its fascinating properties aiming in fabricating electronic devices. Using first-principles calculations, we study the structure, energetic and electronic as well as…
This paper investigates the mechanical behavior of a copper–solder interface when subjected to varying strain rate loading between 0.05 s−1 and 10.0 s−1. The copper is alloy 101, and the solder is lead-free type with a composition of 96% tin and 4% silver. Both uniform and nonuniform two-level strain rate loadings wer…
Abstract Many techniques have been proposed for determining the properties of a finite‐sized periodic structure from one consisting of the same elements and lattice, but infinite in size. In this article, we do the opposite, and describe an easily implemented moment method approach to determine the infinite structure…
A promising approach to the production of thin-walled workpieces in high strength materials is the use of a special pneumomechanical high-speed-forming process. This process uses a pneumatically accelerated plunger that dives into a pressure chamber filled with the working media in order to generate a short pressure p…
A theory of surface plasmon radiation damping in a system of coupled spherical metallic nanoparticles is developed, and a simple formula for the radiation line width is obtained for the first time. It is shown that as a result of surface plasmon frequency redshift, a notable reduction of the radiation damping rate tak…
The influence of copper to indium atomic ratio (Cu/In) on the properties of Cu–In–Te based thin films and solar cells was investigated. The films (Cu/In = 0.38–1.17) were grown on both bare and Mo-coated soda-lime glass substrates at 250 °C by single-step co-evaporation using a molecular beam epitaxy system. Highly (1…
The physical properties and performance of polymer matrix composites can be significantly improved by the addition of carbon nanotubes (CNTs) as reinforcements. Nanocomposites formed from poly(lactic-co-glycolic acid) (PLGA) and carboxylated multiwall CNTs (MWCNTs) have been recently fabricated in order to generate su…
It is critical to accurately measure the near-intrinsic reaction rate and calculate the reaction kinetics of gas-solid reactions for the thermochemistry research and applied engineering technology development. As thermogravimetric analysis/differential scanning calorimetry (TG/DSC), the traditional thermal analysis in…
A series of macroporous adsorption resins (MARs) with novel structures is synthesized via Friedel-Crafts catalyzed reaction. The adsorption kinetics of the synthetic resins with respect to the purification effect is systematically investigated by means of the response surface methodology (RSM). The kinetic data cannot…
The asymmetric unit of the title compound, [Ni(C(17)H(12)I(4)N(2)O(2))], comprises half of a Schiff base complex. The Ni(II) and central C atom of the propyl chain are located on a twofold rotation axis. The geometry around the Ni(II) atom is square planar, supported by the N(2)O(2) donor atoms of the coordinated liga…
The use of nanoscale low-dimensional systems could boost the sensitivity of gas sensors. In this work we simulate a nanoscopic sensor based on carbon nanotubes with a large number of binding sites using ab initio density functional electronic structure calculations coupled to the Non-Equilibrium Green's Function forma…
Recently, new and more stringent environmental regulations coupled with the depletion of oil resources have evoked a concern among researchers to find a substitute for synthetic fibers in polymeric composites (Yousif and El-Tayeb, 2008a). As an alternative, natural fibers are becoming an attractive alternative due to…
The recent discovery that molecular CO(2) transforms under compression into carbon four-coordinated, 3-dimensional network solid phases has generated considerable interests on possible new phases in the fourth-main-group elemental oxides. Based on density-functional theory calculations, we have investigated the thermo…
The presence of low-energy Dirac-like quasiparticles is one of the central features responsible for plethora of recent theoretical and experimental studies on graphene. In this review, we focus on the effect of the Dirac nature of these quasiparticles on two separate aspects. The first of these involves transport acro…