Materials Literature
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The active layer spin coating speed dependence of the performance of inverted organic solar cells (OSCs) based on Eosin-Y-coated ZnOnanorods has been investigated. An active layer consisted of poly(2-methoxy-5-(2'-ethyl)-hexyloxy-p-phenylenevinylene) (MEH-PPV) as donor and phenyl-c61-butyric acid methyl ester (PCBM) a…
The main purpose of this research was to examine the adsorption/ion exchange characteristics of radioactive species such as cesium and strontium onto synthetic Na-birnessite (sodium-birnessite). As part of efforts to investigate the sorption behavior of cesium and strontium onto synthetic Na-birnessite, batch isotherm…
Transparent amorphous oxide semiconductors (TAOS's) are of practical importance for applications including oxide electronics and displays. Here we show the lone-pair s-electrons incorporated by for example Sb-doping can suppress the hole-induced lattice instability, which has been a major obstacle to commercial applic…
Abstract If a specimen has been cold worked, or it did not recrystallize after hot working, the grains will not be equiaxed and extra care must be taken when assessing the specimen's grain size. Always test a longitudinally oriented plane first to determine if the grains are, or are not, equiaxed. In this work, a low-…
Approved Document B: Fire safety - 2
Fuel cells (FCs) convert the chemical energy from the reaction of H2 with O2 to electrical energy, and have become an alternative clean energy source for automotive, portable and stationary applications. FC operation is possible when the membrane located between the electrodes maintains its integrity in the oxidising…
In order to obtain a desirable deposition thickness, nanostructured ternary CoNiCu alloys have been electrodeposited from salt solutions containing Co 2+ , Ni 2+ and Cu 2+ in the presence of a neutral surfactant alkyl polyglucoside (APG). Electrodeposition of CoNiCu was carried out in a three-electrode cell with indiu…
Abstract The binding behaviour of (thio)urea‐ and amide‐functionalized quinoline‐based anion receptors towards halide anions was investigated in detail in CDCl3 and [D6]DMSO solutions by using 1H and 19F NMR spectroscopic methods. The electronic, solvent, and fluoro‐substitution effects were studied. The (thio)urea‐ a…
We developed a macrospin model describing the storage layer magnetization dynamics under spin-transfer-torque (STT) in in-plane magnetized magnetic tunnel junctions comprising a perpendicular, out-of-plane magnetized, polarizer. Two regimes were observed in the storage layer magnetization dynamics under the influence…
Optical emission measurements were recorded during microcrystalline germanium layer growth on glass with plasma enhanced chemical vapor deposition. A significant difference for the intensities of SiH and GeH could be identified in the optical emission spectra of hydrogen/silane (H2/SiH4) and hydrogen/germane (H2/GeH4)…
The organozinc fluorocarboxylates RZnO2CRf and RZnO2CRf·TMEDA, along with Zn(O2CRf)2·TMEDA (R = Me, Et; Rf = C2F5, C3F7) have been synthesized. The structures of EtZnO2C2F5 (5), EtZnO2C3F7 (7), EtZnO2C2F5·TMEDA (11), Zn(O2C2F5)2·TMEDA (13), along with products from the adventitious reaction with either O2 or H2O, Zn10…
A pyramid structure etched with KOH solution was employed on a silicon (Si) surface to increase the absorbing path length of light; subsequently, gold (Au) nanoparticles (NPs) were deposited on the etched surface. Solar cells with and without KOH etching or Au NPs are fabricated to study the effects of KOH etching and…
A series of structurally similar bis-phenanthridinium derivatives, some with uracil at different positions, revealed different interactions with various polynucleotides. The uniform binding of mononucleotides to all studied compounds by "cyclobisintercaland" binding type indicated that compound-polynucleotide interact…
Abstract A growing number of initiatives on nanotechnology research, education, and industry have been recently launched by several Arab countries to quickly build scientific capacity and track worldwide developments in nanotechnology. Some countries, namely, the oil-rich countries, have allocated large funds to suppo…
The results of a numerical study of the various characteristics of the static contact of a liquid meniscus with a flat but heterogeneous surface, consisting of two types of homogeneous materials, forming regularly and randomly distributed microscopic defects are presented. The solutions for the meniscus shape are obta…
Iron-clad results: The effect of nanoparticle size on the kinetics of iron carbidization on silica-supported catalysts was studied by using an in situ magnetic method combined with simultaneous analysis of the reaction products. The activation energy of carbide formation in both CO and syngas grew with a decrease in t…
A new Cd(II) complex {[Cd(btec)0.5(H2O)3]·H2O}n (1) constructed by 1,2,4,5-benzenetetracarboxylic acid (H4btec) has been synthesized under hydrothermal condition and its structure has been determined by means of elemental analysis, IR and single crystal X-ray diffraction. The results show that complex 1 displays an in…
Five oxygenated carbon-centered free radical reactions with nitrogen dioxide (NO2) have been studied in direct time-resolved measurements. Experiments were conducted in a temperature-controlled flow tube reactor coupled to a 193 nm exciplex laser photolysis and a resonance gas lamp photoionization mass spectrometer. R…
A two-step chemical process for controlled degradation of escin, affording a mixture of olean-12-ene sapogenins, was elaborated and scaled up. The main component of the mixture--protoescigenin--was isolated and purified, in the form of its corresponding monohydrate, without resource to chromatographic methods. This ma…
Abstract In the design of explosive devices, understanding of the behavior of explosively propelled matter is one of the important steps to optimize the performance of the device. In a typical flat, metallic flyer and explosives charge system, the flyer reaches its maximum velocity after a certain degree of expansion…