Materials Literature
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A Ni(II) complex of the composition Ni(HNta) · 4H 2 O ( I ) was synthesized. Its structure was found to consist of neutral mononuclear [Ni(HNta)(H 2 O) 3 ] complexes and crystallization water molecules. The Ni atom has octahedral surrounding and is coordinated to tridentate-chelate HNta 2– ligand through the N atom an…
This article reviews devices fabricated using room-temperature solution-casting compatible with silicon post-processing, which produce communications-wavelength electroluminescence. Integrable optoelectronics may be facilitated in this processible material system-one which may conveniently be combined with silicon ele…
A substantial portion of plastics waste consists of a mixture of polyolefins, i.e., polyethylenes of low and high density and polypropylene. These materials are immiscible and generally incompatible. To achieve good properties of the mixtures suitable for more demanding applications, the blends need to be compatibiliz…
Abstract Hollandite samples, Ba x (Ni x Ti 8— x )O 16 (1.1 < x < 1.40) made by ceramic techniques, have been studied by electron and X-ray diffraction. As a result, the barium nickel hollandite system is described as a composite modulated single phase solid solution made up of mutually incommensurable (along b )…
The structure and state of water within hydrating crystalline and amorphous sodium disilicate were monitored for the first time using quasi-elastic neutron scattering (QENS) and X-ray diffraction (XRD). The QENS kinetic data collected for the first 12 h of the reaction were fitted to a model consisting of a Lorentzian…
Low voltage scanning electron microscopy (SEM) metrology and inspection are performed by immersing the sample in an electric field; under this condition, when a scanning electron beam images a sample containing insulating features (like oxides and resist), a surface global charge builds up to offset the applied field…
The main characteristics required for a diffraction grating used for (de)multiplexing functions in spectral equalizing systems are investigated, both theoreticaly and experimentally. We show that volume-phase holographic (VPH) gratings can be used as dispersive elements instead of classic reflection surface-relief gra…
The synthesis of zinc oxide (ZnO) nanocrystallites by mechanochemical reaction of ZnCl2 and Na2CO3 with NaCl as diluent and following thermal treatment was investigated using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Calcination of the as milled powder at 600°C in air and removal of NaCl thro…
The penetrability of concrete in relation to a projectile and the resistance of reinforced concrete against explosion are of considerable interest. The reinforcing steel bars make modeling reinforced concrete more complex than that of plain concrete. In this article, the authors propose a simple but more effective way…
Galvanised steel sheets have been joined using an arc brazing processing technique with Cu97Si3 as the filler metal. Gas metal arc (GMA) brazing and gas tungsten arc (GTA) brazing tests were conducted in flowing argon and with varying process parameters. Excellent wetting between base material and filler was observed…
A series of dendritic gadolinium complexes based on dendrimers with 1,4,7,10-tetraazacyclododecane as the core were synthesized. Both diethylenetriaminepentaacetic acid and pyridoxamine were incorporated to the amine groups on the surface to give the dendritic ligands. These dendritic ligands were then reacted with ga…
The influence of H+ and D+ ion irradiation and laser illumination on the optical absorption edge, the refractive index and the Raman scattering spectra of as-deposited and annealed As2S3 films have been investigated. It was established, that a significant similarity exists between optical changes induced in As2S3 film…
An overview of thermochemical treatment technologies (TTTs) for radioactive and toxic wastes is given. TTTs have been developed for pretreatment (e.g. decontamination), treatment and conditioning of specific wastes such as mixed, organic or chlorine-containing radioactive waste and contaminated soils. TTTs use powder…
A swing objective retarding immersion lens (SORIL) column for wafer inspection is designed and constructed based on SOIL concept. The column consists of a compound retarding electrostatic and magnetic immersion lens and five electrostatic deflectors. The retarding electrostatic and magnetic immersion lens has small sp…
The microstructural evolution of AZ61 magnesium alloy during hot compression at various temperatures was investigated. The experimental results show that dynamic recrystallisation occurs over a wide temperature range. Grains can be greatly refined through dynamic recrystallisation. The mean size of the recrystallised…
Using small-angle neutron scattering (SANS) results, pressure−volume−temperature ( PVT ) data from both polymer melts and blends, and experimentally determined critical temperatures, we employ the lattice Born−Green−Yvon (BGY) theory in the development of new routes for the characterization of polymer fluids and polym…
New approach to the synthesis of unsaturated polyester/clay nanocomposites is described. Various forms of organically modified montmorillonite (OMMT) were introduced in situ during the copolyaddition of epichlorohydrin, maleic anhydride and phthalic anhydride. The catalytic effect of OMMT containing quaternary ammoniu…
The spin injection dynamics of GaMnN∕InGaN multiquantum well (MQW) light emitting diodes (LEDs) grown by molecular beam epitaxy were examined using picosecond-transient and circularly polarized photoluminescence (PL) measurements. Even with the presence of a room temperature ferromagnetic GaMnN spin injector, the LEDs…
The Cu/ZnO/Al 2 O 3 catalyst prepared by the co‐precipitation method is employed in industrial large‐scale methanol synthesis. Although intensive research has already been carried out on this catalyst system, several attempts are still being made to improve it. The knowledge‐based approach provides the basis for a rat…
Principles of physical chemistry and physical properties are used to describe foam formation. Foams are common in nature and in consumer products. The process of foam formation can be used to understand a wide variety of phenomena from exploding volcanoes to popping popcorn and making shoe soles.