Materials Literature
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A general strategy in terms of large-scale and shape-controlled synthesis was used to design highly ordered mesoporous carbon spheres with controlled size from 50 to 500 microm by an evaporation induced organic-organic self-assembly inside ethanol-in-oil emulsions.
Silicon nitride (Si3 N4) nanowires have been prepared by carbothermal reduction followed by the nitridation (CTRN) of silica gel containing ultrafine excess carbon obtained by the decomposition of dextrose over the temperature range of 1200–1350 °C. This innovative process involves repeated evacuation followed by purg…
Abstract Novel optical and electrical properties of newly synthesized nano‐wires of monoclinic WO 3 and nano‐belts of rutile VO 2 have been investigated by Raman spectroscopy and thermo‐chromism studies respectively. Phonon confinement is observed in the WO 3 nano‐wires and the previously modified Richter equation is…
Controlling the coordination environments and the luminescence properties of Eu(3+) complexes with outer-sphere counterions was achieved in the solid state, in a polymer matrix and in solution.
A phototransistor with a field-effect transistor configuration was fabricated using a single zinc octaethylporphyrin (ZnOEP) nanorod; the device showed ability in signal amplification and reversible light-controlled switching.
Due to the strong evolution in the field of nanotechnologies and the continuous miniaturisation of electronic components, multiply-charged ion nanobeams would be a promising tool in this field of research. Either for surface modification or local (nanometre scale) surface analysis purposes, studying the feasibility of…
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…