Materials Literature
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Inspired by array of proteins present in nature, we choose lysozyme (hen egg protein) as a model system to synthesize nanoparticles of noble metals to understand the mechanism of interaction as well as to use them for potential applications such as potent antibacterial agents. Lysozyme is a very well studied biomolecu…
Abstract The fabrication of Al‐doped ZnO films by an aqueous solution process using a continuous circulation reactor was studied. By heating ZnO‐saturated ammonia solutions containing 2–10 mM Al(NO 3 ) 3 with pH 10.7 at 90 °C under ambient pressure, polycrystalline ZnO films with Al content of 1–2 at.% were deposited.…
Abstract We have investigated electrical transport properties of the composite of multiwall carbon nanotubes–polypyrrole–polyvinyl alcohol. Samples are prepared in an in situ chemical oxidative method and they are characterized by X‐ray diffraction, field emission scanning electron microscope to understand their struc…
The aim of this work is to investigate the effects of different power modes [constant current (CC), constant voltage (CV) and constant power (CP)] on the structure and corrosion resistance of the plasma electrolytic oxidation ceramic coatings containing Ca and P on AZ91D Mg alloy. The phase composition, morphology and…
The radiation resistance of the mineral xenotime YPO 4 has been investigated using computer simulation methods. The optimal criteria for the appropriate choice of the parameters of the interatomic potentials used for the simulation of α-decay in minerals have been proposed. The formation of a cascade of displaced atom…
POM in POM: Eine Wells-Dawson-Polyoxometallat-Sandwichverbindung mit einem Doppelcubankern aus sechs Vanadiumatomen wurde synthetisiert (siehe Struktur). Die Clusterbildung wurde massenspektrometrisch verfolgt und der Reduktionsprozess des Doppelcubans durch spektroelektrochemische Massenspektrometrie untersucht.
Abstract Magnesium hydroxyfluoride, Mg(OH)F, has been synthesized by a subcritical hydrothermal route from a 1:1 molar mixture of brucite, Mg(OH) 2 , and sellaite, MgF 2 with a rutile type structure, in excess water. Using a combination of synchrotron X-ray and time-of-flight neutron powder diffraction, the structure…
Various mesoscopic devices exploit electrostatic side gates for their operation. In this letter, we investigate how voltage biasing of graphene side gates modulates the electrical transport characteristics of a graphene channel. We explore myriads of typical side-gated devices such as symmetric dual-side gates and asy…
The activity of 0.25–5% Ag/Al2O3 catalysts in the selective catalytic reduction of nitrogen oxides with n-hexane under the conditions of promotion with a small amount of H2 was studied. It was found that, upon the introduction of ∼1000 ppm of H2 into the reaction mixture, the Ag/Al2O3 samples containing 1–2% Ag exhibi…
This paper reports on a study of the Seebeck coefficient and power factor κ of p-Bi2 − x Sb x Te3 solid solutions with different contents of antimony atoms in the bismuth sublattice for x = 0, 1.4, 1.5, and 1.6 under variation of pressure of up to 15 GPa. The magnitude of κ has been found to grow nonmonotonically with…
A series of poly(ethylene terephthalate) terpolyesters containing varying amounts of both 1,4-cyclohexylenedimethylene and isosorbide units were prepared by melt phase polycondensation. These terpolymers were obtained with high molecular weights and polydispersities around 2.0–2.5. The nuclear magnetic resonance data…
The main objective of the present work is to processing the porous Si-SiC ceramic by the oxidation of C/C-SiC composite. Phase studies are performed on the oxidized porous composite to examine the changes due to the high temperature oxidation. Further, various characterization techniques are performed on Si-SiC cerami…
Abstract Summary: Langevin molecular dynamics (LMD) simulations have been performed in order to understand the role of the short chain branches (SCB) on the formation of ordered domains by cooling ethylene/α‐olefins single chain models. Different long single‐chain models (C 2000 ) with 0, 5 and 10 branches each 1000 c…
Precious metal catalysts have been used in many industries, such as refinery, petrochemicals, polymer, chemicals, pharmaceuticals, and environment, For example, automotive industry utilizes large amounts of precious metal catalysts as a part of auto exhaust gas purifier, because of their high activity and selectivity…
AIMS: To synthesize block copolymer-based gadolinium nanoparticles (Gd-NPs) and evaluate their potential as a new MRI contrast agent. MATERIALS & METHODS: The Gd-NPs were developed through coordination of gadolinium chelates into a pentablock copolymer synthesized by two sequential atom transfer radical polymerization…
This paper describes an amine free sol–gel method for silica coating of Au nanoparticles and shows an X-ray image of a colloid solution of the silica coated Au (Au–SiO 2 ) particles. The Au nanoparticles that had a size of 16·9±1·2 nm were prepared through a conventional citrate reduction method. The silica coating wa…
The microstructures and mechanical properties of as cast Mg–Zr–Ca alloys were investigated for potential use in biomedical applications. The Mg–Zr–Ca alloys were fabricated by commercial pure Mg (99·9 mass-%), Ca (99·9 mass-%) and master Mg–33 mass-%Zr alloy. The microstructures of the alloys were examined by X-ray di…
Postite, Mg(H 2 O) 6 Al 2 (OH) 2 (H 2 O) 8 (V 10 O 28 )·13H 2 O, is a new mineral species from the Vanadium Queen mine, La Sal Creek Canyon, and the Blue Cap mine, Lyon Canyon Creek, San Juan County, Utah, U.S.A. Postite occurs as very thin, needle-like prisms with pyramidal terminations; crystals commonly occur in pa…
Abstract We report structural features and multifunctional properties of nanocomposites based on poly(butylene terephthalate) (PBT) and exfoliated graphite (EG), which are manufactured by melt‐compounding technique. Scanning electron microscope and X‐ray diffraction data exhibit that graphene platelets of EG are well…
Three-dimensional periodic complex structures are encountered in various soft matter systems such as liquid crystals, block-copolymer phases and the related nano-structured materials. Here, we review several well-defined topologies: two-dimensional hexagonal phase, three-dimensional packing of spheres, tetrahedral clo…