Materials Literature
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An α-cobalt hydroxide with an interlayer spacing of 12.65 Å has been synthesized in sheet shapes with dimensions of 100–120 nm with the aid of sonication. Acetate anions are intercalated into the interlayer region of the as-prepared α-cobalt hydroxide in the form of a free ion state. β-Cobalt hydroxide has also been p…
Fe-Mn based transition metal oxides (Fe-Mn, Fe-Mn-Zr and Fe-Mn-Ti) show nearly 100% NO conversion at 100-180 degrees C for selective catalytic reduction of NO with NH3 under the applied conditions with a space velocity of 15,000 h-1.
A structurally right/left-handed ferrocholesteric slab with negative real permittivities and permeabilities is theoretically shown to display the Bragg phenomenon on axial excitation as if it were a structurally left/right-handed ferrocholesteric slab with positive real permittivities and positive real permeabilities.…
A very large magnetic entropy change ΔS has been observed in Fe-based cubic NaZn13-type compound LaFe11.2Co0.7Si1.1 near the Curie temperature TC of 274 K. The value of the entropy change is ∼20.3 J/kg K under a magnetic field of 5 T at TC=274 K. It markedly exceeds that of pure Gd at the corresponding temperature ran…
The fluorescence, absorption and fluorescence quenching properties of an anionic poly(phenylene ethynylene) are investigated in H2O and MeOH solutions.
We demonstrate that electrochemically etched, hydrogen capped SinHx clusters with n larger than 20 are obtained within a family of discrete sizes. These sizes are 1.0 (Si29), 1.67 (Si123), 2.15, 2.9, and 3.7 nm in diameter. We characterize the particles via direct electron imaging, excitation and emission optical spec…
The regeneration of a commercial activated carbon (AC) was studied using the wet air oxidation (WAO) process in the temperature range 150−180 °C and an oxygen partial pressure of 0.718 MPa. p -Nitrophenol (PNF) was used as the adsorbate. First, the oxidation process of PNF was studied. In the absence of AC, it was ind…
The structures of free-standing zirconium nanowires with 0.6$-$2.8 nm in diameter are systematically studied by using genetic algorithm simulations with a tight-binding many body potential. Several multi-shell growth sequences with cylindrical structures are obtained. These multi-shell structures are composed of coaxi…
We have simulated the tensile testing of cylindrical multi-shell Cu nanowire. Elongated cylindrical multi-shell Cu nanowire was transformed into a pentagonal structure. Pentagonal nanowires are composed of a central atomic strand and pentagonal tubes made of five-times-folded <110>{100} sheets.
In order to understand properties of ultrathin copper nanowires, we have simulated several copper nanowires using classical molecular dynamic simulations. As the temperature increases, copper nanowires were transformed into structures of the lowest surface stresses and surface energy, circular cross-section with {111}…
Carbon nanotubes were solubilized via functionalization with poly(propionylethylenimine- co -ethylenimine). The diimide-activated amidation reaction for the functionalization was found to be significantly improved in both efficiency and yield by sonication under ambient conditions. It was also found that depending on…
This paper describes a simple and convenient approach that allowed for the facial synthesis of silver/silica coaxial nanocables with well-controlled sheath thicknesses in the range of 2−100 nm. The lengths of these nanocables could be up to ∼50 μm. Such nanocables were prepared by directly coating bicrystalline silver…
For the first time, an analysis of all experimental data on the differential cross section for elastic γp scattering at photon energies below 150 MeV is performed in order to determine the electric ( α p ) and magnetic ( β p ) polarizabilities of the proton. A fit to these data with two free parameters α p and β p emb…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text R. S. Sokolova and N. A. Pashkova, "Multispectral antireflection coatings for the IR region," J. Opt. Technol. 69, 86- (2002) Export Citation BibTex En…
Raman spectroscopy was used to determine the molecular behaviour of DMSO and DMSO-d6, and to compare it with that of DMSO in DMSO-intercalated kaolinites. For DMSO at 298 K two bands are observed at 2994 and 2913 cm−1 and are assigned to the antisymmetric and symmetric CH stretching modes. At 77 K the degeneracy of th…
In order to produce gathering on the fabric, it is a normal method to tighten the thread sewed on fabric. In this paper a new method is presented for producing gathering on the fabric. A special thread (Acrylic95%, polyurethane5%) shrunk by treating with steam as a sewing thread to sew on the fabric. Then, the sewed f…
This article concerns the catalysis of polycondensations and polyadditions its scope is limited to the use of metal derivatives and enzymes. Palladium, nickel, ruthenium and copper derivatives are studied as catalysts of carbon-carbon forming polycondensations when applied to polymeric systems and models side reaction…
The electronic properties of an orthorhombic phase of chromium carbide are calculated by the extended Hückel tight-binding method. We found in this phase similar trends in band structure and total and p–d orbital projected DOS with respect to other crystalline phases calculated previously. The bonding nature is analyz…
Abstract Hydrogenated castor oil was reacted with isophorone diisocyanate under different stoichiometric NCO/OH ratios to obtain polyurethanes. These polyurethanes were subsequently interpenetrated with butyl methacrylate monomer using ethylene glycol dimethacrylate as a crosslinker by radical polymerization using ben…
Abstract Transcrystallization of isotactic polypropylene (i‐PP) on the surface of polyte‐trafluroethylene (PTFE) fibers was investigated. Using the single‐fiber pull‐out test, the effect of the transcrystalline layers (TCLs) on the adhesive fracture energy was studied as well. To induce TCL with different thickness, t…