Materials Literature
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A Keggin-type polyoxometalate and potassium-sulfanilamide complex, [{K(C6H10N2O2S)2(H2O)}2(SiW12O40)2] · 2H3O+ · 10H2O (1), has been synthesized and characterized by elemental analyses, IR, TG, and single-crystal X-ray diffraction. Compound 1 exhibits infinite 1-D dimer chains which are constructed from Keggin units […
The phenomena of buckyball–graphene collisions were investigated by classical molecular dynamics (MD) simulation using the empirical Tersoff potential. Three cases were investigated: collisions between a buckyball and a single-layer graphene; collisions between a nano-onion (a double-layer concentric spherical nanostr…
The structural and electronic properties of a tetrathiafulvalene (TTF) monolayer adsorbed onto the ZnO(10–10) surface are investigated by using two different quantum-chemical approaches, namely, density functional theory and the self-consistent charge density functional-parametrized tight binding method. The two appro…
Artificial lung also called as oxygenator which performs a function of exchanging O2 and removing CO2 from blood. Due to its good performance at the exchange area, oxygenation, etc, hollow fiber membranes have become the main research direction of artificial lung. Polypropylene (pp) hollow fiber membranes made by the…
The structural evolution in wet alkoxide-carboxylate sol–gel precursor films of barium titanate upon drying was investigated by time-resolved small-angle X-ray scattering (SAXS). The morphology of as-dried amorphous precursor thin films was investigated by transmission electron microscopy (TEM) and electron energy los…
Abstract Palladium nanoparticles (Pd‐NPs)/polyaniline (PAni)/titanium (Ti) catalysts were prepared using electroless deposition of Pd‐NPs on PAni matrixes coated on Ti substrate. PAni/Ti electrodes were synthesized by electro‐polymerization of aniline on Ti. The morphology of Pd‐NPs on PAni/Ti electrodes were characte…
High-strength low alloy steels (HSLA) have been designed to replace high-yield (HY) strength steels in naval applications involving impact loading as the latter, which contain more carbon, require complicated welding processes. The critical role of HSLA-100 steel requires achieving an accurate understanding of its beh…
Abstract Many authors have reported on the property enhancements possible by compounding high density polyethylene (HDPE) with fillers to produce composites. It is accepted that polyethylene combined with materials such as nanoclay or wood flour will not yield favorable properties unless a compatibilizing material is…
We study the effects of spatial dispersion or nonlocality in the calculation of the Hamaker coefficient. Using a hydrodynamic model to describe the dielectric function of the materials, we show that at small separations, less that 10 nm, the Hamaker coefficient decreases significantly when a nonlocal dielectric is use…
Abstract The surface stability of five terminations (BaTiO, TiO, Ba, O 2 , and O) for the polar (110) BaTiO 3 surface is systematically studied by first‐principle calculations. The surface grand potential is calculated and compared, taking into account the influence of the chemical environment as function of the relat…
Interstitial loops are one of the principal evolving defects in irradiated materials. The evolution of interstitial loops, including spatial and size distributions, affects both vacancy and interstitial accumulations in the matrix, hence, void formation and volumetric swelling. In this work, a phase-field model descri…
The binding of the fluorescent polyanionic probe 5(6)-carboxyfluorescein (CF) to various generations of dendrimers (G3-G7) was studied in buffered aqueous media by absorbance and fluorescence spectroscopy and by isothermal titration calorimetry (ITC). Absorbance, fluorescence, and fluorescence anisotropy data were col…
A SnOW-bound polyoxometalate: Targeted incorporation of {SnOMe}3+ into lacunary {W5O18}6− has been achieved by hydrolytic self-assembly. The [(MeO)SnW5O18]3− ion undergoes a reversible one-electron reduction, shows a large upfield shift of the Wax resonance in the 183W NMR spectrum and has a calculated HOMO–LUMO gap o…
Microgravity experiments on the thermocapillary convection in liquid bridge, called Marangoni Experiment in Space (MEIS), are carried out in "KIBO" of ISS. Three series of experiments, MEIS-1, 2, and 4, have been conducted so far. This paper reports the results obtained from MEIS-4, in which 20cSt silicone oil ( Pr =…
Abstract Nanocomposites of cellulose acetate and an organically modified montmorillonite (CA/MMTO) were prepared by melt intercalation in a twin‐screw extruder, using two different plasticizers: di‐octyl phthalate (DOP) and triethyl citrate (TEC). The influence of plasticizer type and the organoclay added to the struc…
Rubber wastes cause severe damages for the environment when unsuitably disposed in the environment and represent a challenger for mechanical recycling, because the vulcanized rubber is formed by a tridimensional network with intermolecular sulfur crosslinks. Microwave radiation can lead to the breaking of sulfur cross…
The effect of texture on grain boundary character distribution (GBCD) in thermomechanically processed oxygen-free high-conductivity copper has been investigated. Copper samples were cold rolled to a reduction in thickness of 50% and then annealed for 60 min in the range of 400–600°C. GBCD and texture were measured usi…
We reported the enhancement of light scattering in the urchin-aggregation shaped closely-packed hierarchical ZnO nanostructures, fabricated by a simple and scalable process based on the hydrothermal method utilizing the silica microspheres monolayer as a two-dimensional periodic template. From theoretical predictions,…
The cube texture in rolled and annealed fcc metals and alloys has long fascinated metallurgists because of its high symmetry and extreme sharpness. This paper demonstrates and analyses the texture perfection that is developed in a copper sample. Reasons that have been advanced to explain the development of the texture…
Abstract Acrylonitrile‐butadiene‐styrene (ABS)/functionalized‐graphene nanocomposites were synthesized using the solution‐blending method in chloroform. A dispersion of graphite oxide was added to a solution of the ammonium salt of octadecylamine (C18) to form octadecylamine‐graphene (C18‐graphene), which was then use…