Materials Literature
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The II-VI semiconductors are important optoelectronic, luminescent, and lasing materials. This paper presents a review on synthesis, structure, and growth mechanisms of one-dimensional nanostructures of ZnS, CdSe, ZnSe, CdS and CdO. The two most frequently received wurtzite structures of these materials are "nanobelts…
The influence of electrodeposited polypyrrole (Ppy) films on the corrosion behavior of aluminum and Al 2024-T3 alloy, particularly on the corrosion behavior of exposed metal in damaged areas of the film, has been investigated using the scanning vibrating electrode technique (SVET). Two types of experiments are describ…
We demonstrate that the particle mediated interaction between a pendant water drop, covered by a latex particle monolayer, and a planar decane/water interface leads to bridging, analogous to flocculation in solid-stabilised emulsions. The results also provide information about the particle contact angle at the oil/wat…
The benefits of carrying out single crystal X-ray diffraction (SXRD) experiments at low temperatures have long been recognised by the scientific community, as clearly demonstrated by the massive increase in publications reporting the use of low temperature SXRD in the past 15 years. This tutorial review will summarise…
Structural moieties including core units (such as phenyl, naphthyl and thiophenyl), linking groups (such as ethynyl), terminal substituents (such as cyano, isothiocyanato and fluoro), and lateral fluoro substituents have been incorporated into novel materials designed to confer a high birefringence on nematic mixtures…
Nickel oxide thin films, known as optically active counter electrodes in electrochromic devices, were grown at room temperature under an oxygen pressure of 10 − 1 mbar, using pulsed laser deposition (PLD). The influence of the film thickness, potential window, and extended cycling on the electrochromic properties was…
Cationic and anionic clusters 195Ptn±, 1 ≤ n ≤ 24, were generated by laser vaporization using an isotopically enriched platinum sample. The oxidation of the clusters by nitrous oxide under binary collision conditions was investigated as a function of charge and size in a Fourier transform ion cyclotron resonance mass…
The propagation speed of the front of electrochemical conversion, from semiconductor to highly doped polymer, in films of regioregular poly(3-hexylthiophene) spin cast on insulating substrates was analyzed. Propagation of the p-doped zone in polymer electrochromic devices was imaged simultaneously with recording of el…
An organic solvent-type electrolytic solution was employed for application on an electric double-layer capacitor (EDLC) made of a polyvinylidene chloride (PVDC) based carbon material. Although the PVDC-based carbon material showed an excellent capacitance over a 100 F/g in an aqueous solvent-type electrolytic solution…
A highly selective titania supported propylene epoxidation catalyst was synthesized from chemically reduced, thiol capped, gold nanoparticles, and characterized by TEM and XPS.
A facile route for the synthesis of nickel nanoparticles in stable aqueous foams is reported. The Ni nanoparticles were roughly 12–15 nm in size and were stable as aqueous suspensions or powders when oleic acid was used as a capping agent. These Ni nanoparticles were subsequently coated with a silver shell in view of…
Small angle neutron scattering (SANS) and rheological measurements have been used to study horse heart cytochrome C, a globular protein characterized by approximately spherical shape (a × b × b = 15 × 17 × 17 Å3) with a molecular weight of 12 384 Da and a pI = 10.2. Two series of very concentrated protein solutions ha…
The synthesis and characterization of several new banana-shaped mesogens derived from 2,7-dihydroxynaphthalene are described. Some new phase sequences such as N → B6 → B1, N → X1 → X2 → B6, N → X1 → X2 → B1 → Col? have been observed in these bent-core compounds. The influence of a lateral fluorine substituent on the o…
Co-crystallisation of the anionic cyanometallate chromophore [Ru(bipy)(CN)4]2- with Yb(III) provides coordination polymers or oligomers containing Ru-CN-Yb bridges; in [K(H2O)4][Yb(H2O)6][Ru(bipy)(CN)4]2.5H2O Ru-->Yb energy-transfer (k > 5 x 10(6) s(-1)) results in partial quenching of the Ru-based luminescence and se…
The fluorescence of beta-cyclodextrin-modified CdS quantum dots can be reversibly tuned by introducing different substrates in aqueous media.
The adsorption of hydrogen on a well defined single crystal rutile TiO2(110) surface has been investigated using helium atom scattering (HAS). Whereas the adsorption probability of molecular hydrogen was below the detection limit (S < 2 × 10−7), the hydrogen adlayers were prepared by exposing the clean surface to atom…
An optimization study of different parameters for the synthesis of well dispersed nanoparticles (5–30 nm) of the system Co1−xZnxFe2O4, (0 ≤ x ≤ 0.8) has been carried out using a novel microwave refluxing method. Ethylene glycol has been used as the medium which serves as the solvent as well as a complexing and capping…
Phase relationships, structures, magnetic properties, and phase transitions in the lithium manganese oxide spinel were studied based on a wide variety of samples synthesized at temperatures over a range of 750 ≤ t ≤ 900 °C with Li/Mn ratios between 0.5 and 0.55 and various starting materials. The system was divided in…
The effects of the introduction of the γ (A1) phase into the β (B2) phase on the mechanical and shape memory properties in ferromagnetic Co-Ni-Al shape memory alloys with the β+γ two-phase structure were investigated by cold-rolling, tensile tests, and bending tests. The mechanical properties were found to be improved…
Ni electrodes impregnated with nanosized electrocatalytic active (GDC) particles were fabricated and investigated as anodes for oxidation reaction in solid oxide fuel cells (SOFCs). Incorporation of nanosized ionic conducting GDC particles significantly reduced the electrode interface resistance and polarization poten…