Materials Literature
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Results are presented from molecular dynamics (MD) simulations of displacement cascades created in α-iron (Fe) by primary knock-on atoms (PKAs) with energy from 5 to 20 keV and mass chosen to represent C, Fe and Bi. The PKA-Fe interaction potential at short range has been varied, and damage by molecular Bi2 has been s…
Mesostructured silica can be prepared by surfactant templating either under conditions of low surfactant template concentration (so-called liquid crystal templating) or from a pre-formed mesophase at higher surfactant concentrations (true liquid crystal templating). In this study, the structural properties of such sil…
Molecular dynamics simulations of mixtures of carbohydrates and water are performed for a homologous series of maltooligomers from glucose to maltopentose at water contents ranging from 0 to 100 weight % and for temperatures between 270 and 370 K. The specific volume of maltooligomer–water mixtures follows volume addi…
The behaviour of two heteropolyacids (HPAs) with quite different stability in aqueous solutions was systematically investigated by UV, IR and NMR spectroscopy and potentiometric titration. It was shown that the Keggin structure of 12-tungstosilicic acid (H4SiW12O40, WSiA) anion was sustained over a wide range of pH fr…
Extensive use of pressurized steam in the oil and gas sectors has led to incidents where workers were seriously injured. In this study a test device and procedure to measure heat transfer through fabrics during steam exposure were developed and evaluated. Several factors were considered while designing the test device…
A kinetic mixture of self-assembled subphthalocyanine-based capsules was shown to gradually reorganize into its more stable symmetrical components by electrospray mass spectrometry.
An approach inspired by biomineralization leads to the selective formation of highly crystalline α-Co(OH)2 and its oriented thin films in the presence of organic molecules under mild conditions.
Purpose of review: This review focuses on the practical use of natural antimicrobial agents incorporated in active packaging delivery systems to preserve the quality of fresh fruits and vegetables. Main findings: Considerable postharvest losses of fresh fruits and vegetables are caused by microbial plant pathogens. As…
Nanostructured cobalt oxide ͑Co 3 O 4 ͒ electrodes were prepared by two different methods.The first one involved the synthesis of Co 3 O 4 nanoparticles through a nanocasting route using commercial silica gel as a sacrificial template, and in the second one, the Co 3 O 4 electrodes were prepared by thermal decompositi…
Duplex stainless steels (DSS) as alternatives to conventional austenitic stainless steels for the construction of pipelines is becoming more wide-spread, particularly for sour service applications where corrosion resistance / stress corrosion cracking resistance is required in aggressive chloride / sulphide environmen…
This paper presents a new and accurate Current Transformer (CT) model for the analysis of electromagnetic transients, based on representation of core magnetization characteristics using the Preisach Theory. Unlike the existing CT models, the proposed model determines shapes of hysteresis minor loops independent of the…
Ultraviolet-assisted curing (UV curing) has been applied recently to enhance the mechanical properties of low- films. Knowledge about which UV energies are most effective is still limited and the consequences of applying the UV-curing process to integrated stacks in on-chip interconnects are unknown. To clarify these…
Generating polymers in the presence of a self-assembling gelator with terminal double bonds yields polymeric materials with embedded reactive nano-skeletons-subsequent washing gives nanoscale imprinted materials with fibrillar architectures.
The synthesis is reported of a series of metalloporphyrins (and the corresponding free-base porphyrin), mono-meso-substituted with a bipyridyl group via an amide link at the 4-position of one phenyl group: [Re(CO)(3)(Pic)Bpy-MTPP][OTf], where M = Mg, Zn, Pd or 2H, Pic = 3-picoline, Bpy = 2,2'-bipyridine, TPP = tetraph…
Silica nanowires are one-dimensional nanomaterials that are being developed for use in biological systems. Unfortunately, little is known regarding the cytotoxic potential of this type of nanomaterial. Here, using two different human epithelial cell lines we have examined the cytotoxicity of silica nanowires over a br…
Porous silicon (PS) samples were obtained by anodization etching process of n-type silicon wafer phosphorus-doped. Electrochemical oxidation of PS was investigated in aqueous hydrofluoric acid (HF) containing additive such as ethanol or acetonitrile. Pore formation was studied with the variation of type and resistivit…
A new method for the synthesis of biocompatible and multifunctional semiconductor ZnO quantum dots (QDs) through reaction of oleate-capped ZnO QDs with a poly(ethylene glycol)-siloxane is reported. The size, shape, crystal structure and the optical properties of water-soluble ZnO QDs were characterized by atomic force…
Azobenzene derivatives can be used to reversibly photo-regulate conformation and activity when introduced as intramolecular bridges in peptides and proteins. Here we report the design, synthesis, and characterization of an azobenzene derivative that absorbs between 400-450 nm in aqueous solution to produce the cis iso…
SCK nanoparticles having differing core thermal characteristics were designed and evaluated as thermoresponsive drug delivery systems of doxorubicin for the killing of cancerous cells.
The different complexation methods of a proton transfer compound, (creatH)(pydcH)·H 2 O (pydcH 2 = pyridine-2,6-dicarboxylic acid; creat = creatinine) with metal ions have been studied and formation of [(Tl(pydcH)] n (1), [(Fe(pydc)(H20)2)20x]·6H 2 O (2), [Cu(pydc)(pydcH 2 )]·2H 2 O (3) and (creatH)2[Bi(pydc)2]2'4H20…