Materials Literature
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BCN nanotube brushes have been obtained by the high temperature reaction of amorphous carbon nanotube (a-CNT) brushes with a mixture of boric acid and urea. The a-CNT brushes themselves were obtained by the pyrolysis of glucose in a polycarbonate membrane. The BCN nanotubes have been characterized by EELS, XPS, electr…
Abstract Wheat starch‐Cloisite Na+ nanoclay composites containing different glycerol and nanoclay concentrations were extruded using a twin‐screw extruder. X‐ray diffraction and transmission electron microscopy were used to determine the extent of nanoclay dispersion and thermogravimetric analysis was used to characte…
Thiol stabilized CdTe quantum dots (QDs) synthesized in aqueous phase were used as energy donors to aluminium tetrasulfonated phthalocyanine (AlTSPc) through fluorescence resonance energy transfer (FRET). Energy transfer occurred from the QDs to AlTSPc upon photoexcitation of the QDs. An enhancement in efficiency of e…
The structure and chemical ordering of CoPt nanoclusters in the size range of 1 to 3 nm are investigated by global optimization methods and Monte Carlo simulations using a many body potential derived from the tight binding model. For the smaller systems (number of atoms N < 100), the optimized clusters display a polyi…
Half-metallic ferromagnets and especially the full-Heusler alloys containing Co are at the center of scientific research due to their potential applications in spintronics. For realistic devices it is important to control accurately the creation of defects in these alloys. We review some of our late results on the rol…
An expression for the microwave power generated by a spin-torque oscillator in the presence of thermal noise is derived. This expression, when used in a subcritical regime, demonstrates that generated power is determined by the noise level and provides a simple way to experimentally determine the threshold current for…
We present extended x-ray-absorption fine structure (EXAFS) data at the $\mathrm{Mn}\phantom{\rule{0.2em}{0ex}}K$ and $\mathrm{Tb}\phantom{\rule{0.2em}{0ex}}{L}_{3}$ edges that provide upper limits on the possible displacements of any atoms in $\mathrm{Tb}\mathrm{Mn}{\mathrm{O}}_{3}$. The displacements must be less th…
We present a comparative study of $\mathrm{Co}{\mathrm{O}}_{2}$ layers in the Bi misfit and ${\mathrm{Na}}_{x}\mathrm{Co}{\mathrm{O}}_{2}$ cobaltates. Co NMR measures the intrinsic susceptibility of the Co layers and is not affected by spurious contributions. At low dopings where room-temperature thermoelectric power…
We report results on ab initio calculations of excited states of the fullerene molecule by using configuration interaction (CI) approach with singly excited determinants (SCI). We have used both the experimental geometry and the one optimized by the density functional method and worked with basis sets at the cc-pVTZ a…
Abstract The invention of Nylon‐6/clay nanocomposites by the Toyota Research Group of Japan heralded a new chapter in the field of polymer composites. This article highlights the work done in the field of rubber/clay nanocomposites. The preparations of rubber/clay nanocomposites by solution blending, latex compounding…
High-throughput data collection requires the seamless interoperation of various hardware components. User-supplied descriptions of protein crystals must also be directly linked with the diffraction data. Such linkages can be achieved efficiently with computer databases. A database that tracks production of the protein…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The effect of 30 vol% MoSi 2 addition on the fracture toughness of AlN-, SiC-, and Si 3 N 4 -based composites is investigated. To isolate the contribution of MoSi 2 particulate, the toughness of the composite is compared to that of the reference AlN, SiC, and Si 3 N 4 matrixes. It turns out that the main toughening me…
In this paper, the combustion characteristic of soot was investigated in a quartz tube fixed-bed reactor. The soot was generated from the natural gas diffusion flame with different oxygen concentrations (20%, 15%, 10%, and 5%). Noncatalyzed reaction between the soot and NO was also investigated in different NO concent…
Many applications, such as semiconductor lithography and material processing, require the shaping of laser beams to provide a homogenous field illumination. We present the conception, implementation, and experimental verification of a combined single-element homogenizer. Additionally, for excimer laser applications, t…
The kinetics associated with the reaction of aromatic and aliphatic diamines with phthalic anhydride in glacial acetic acid was studied. This model system was intended to simulate the synthesis of polyimides from diamines and dianhydrides in molten benzoic acid. The reaction proceeds in two discrete steps, the first a…
A disiloxane dialdehyde was obtained from bis (chloromethyl)disiloxane and p-hydroxybenzal-dehyde and it was used in an equilibration (redistribution) reaction to synthesize an oligomeric dialdehyde. By solution polycondensation, starting from bis(formyl-p-phenoxymethyl)tetramethyldisiloxane and different organic diam…
This research aims to perform a symmetric investigation regarding the organoclay effect on the mechanical behaviors of glass/epoxy nanocomposites. Tensile, flexural, as well as interlaminar fracture toughness are of concern in this study. To demonstrate the organoclay effect, three different loadings, 2.5, 5, and 7.5…
Abstract On the basis of the one‐dimensional, isothermal mechanistic model in the anode of an anode‐supported solid oxide fuel cell using binary mixture as fuel, two approximate analytical solutions considering both mass and charge transfer were developed in this article. First, by dividing the anode into the inactive…
Abstract Bis(imidazolylimine) ligands, H2LH and H2LMe, were prepared from hydrazine and 4-formylimidazole or 2-methyl-4-formylimidazole (1:2), respectively. Mononuclear iron(II) complexes, [Fe(H2LH)2](ClO4)2·MeOH and [Fe(H2LMe)2](ClO4)2·2H2O, were in the LS and HS states, respectively, in the temperature range 5–300 K…