Materials Literature
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Simulation studies were carried out to analyze the effect of planar defects (twins) on the X-ray diffraction patterns of boron carbide, B 4 C. The presence of these defects had a marked influence on the patterns. Significant changes in the height, width, and other features of diffraction peaks are seen as a result of…
The synthesis, characterization, and bulk and lattice thermal expansions of a series of compounds with general composition Ce 1– x Y x O 2– x /2 (0.0 ≤ x ≤ 1.0) are reported. The XRD pattern of each product was refined to learn the solid solubility limit and the homogeneity range. The solid solubility limit of YO 1.5…
To model the thermal conductivity of polymer composites that are filled with ceramic powders, the conductivity of each component as well as the interfacial resistance at each ceramic–polymer boundary must be known. An indirect method to determine this interfacial boundary resistance is proposed by preparing large‐scal…
We proposed the “birefringent crystal dopant method” in order to compensate the birefringence of polymers. In this method, the birefringence was compensated by homogeneous doping with a needlelike crystal which has the opposite birefringence to that of the polymers. Strontium carbonate (SrCO 3 ) was selected for this…
The adsorption, desorption, and oxidative decomposition of the 2-chloroethyl ethyl sulfide molecule (2-CEES) has been investigated on the TiO 2 (110) surface as well as on high area anatase and rutile powdered samples. A combination of measurement tools has been employed. It has been found that a monolayer of 2-CEES d…
Abstract The modulus development of reacting polyurethane foams from modified soy oil (soy polyol) was studied. The reaction and buildup of rheological properties were monitored using vane geometry in a strain‐controlled rheometer. Normal force exerted on the vanes by the expanding foam was measured as a function of t…
A plate model is developed for nanostructured materials possessing platelike geometry, such as ultrathin films. The dispersion relations of a three-layered nanomaterial are analyzed with both the nanoplate model and the lattice model to show the effectiveness of this nanoplate model. Cylindrical bending of a three-ato…
This book surveys the development and future applications of Si-based technologies.It begins with the properties of Si as a semiconductor and reviews the growth of the microelectronics industry.The importance of defects, doping, and impurities are described.The final chapters consider nanoelectronics, ambient intellig…
The radiation behavior of a commercially available Er-doped fiber is evaluated under varying gamma dose rates with in-situ spectral loss measurements. Complementary post-irradiation photoluminescence measurements allow us to better understand the radiation effects. Our results suggest that the microscopic environment…
A mixture of Al2O3 and GdAlO3 was melted and rapid quenched to produce an amorphous film. Dense eutectic composites were consolidated from ground amorphous powder using both conventional and spark plasma sintering (SPS). Conventional sintering at temperatures above 1600°C for 24 h was required for complete sintering.…
A technique for the remote inspection and monitoring of partial discharge (PD) activity using an optical network is described. The network uses a LiNbO/sub 3/, modulator to modulate the intensity of the transmitted laser light approximately proportional to the voltage applied across the modulator. The laser light is t…
Calcium carbonate was grown from aqueous solution in the presence of organic crystal modifiers of the saccharide and alcohol subclasses. The control crystallization procedure preferentially nucleates vaterite, the kinetically stabilized calcium carbonate polymorph. Addition of saccharides (mono-, di-, and polysacchari…
Abstract A series of eleven heteroleptic bis(phthalocyaninato) rare earth double‐deckers [M III (pc){pc( α ‐OC 5 H 11 ) 4 }] 1 – 11 (M=Y, SmLu; pc=phthalocyaninato; pc( α ‐OC 5 H 11 ) 4 =1,8,15,22‐tetrakis(1‐ethylpropoxy)phthalocyaninato) were prepared as racemic mixtures by [M III (pc)(acac)]‐induced (acac=acetylace…
Abstract Microspheres of 5‐fluorouracil‐loaded poly(ϵ‐caprolactone) (PCL) were prepared by spray‐drying procedure. The degradation characteristics and 5‐fluorouracil release in vitro as well as in vivo were investigated. The average molecular weight, weight loss, crystallinity, and morphology of microspheres were dete…
Surface flashover is a major consideration in a wide variety of high-voltage applications, and yet has not been studied in great detail for atmospheric conditions, with modern diagnostic tools. Environmental conditions to be considered include pressure, humidity, and gas present in the volume surrounding the dielectri…
Abstract The electrochemical and electrochromic properties of layer‐by‐layer nanoarchitectures of V 2 O 5 /chitosan and V 2 O 5 alternated with a blend of poly(ethylene oxide) (PEO) and chitosan have been examined. Using a blend was important, since multilayers of PEO/V 2 O 5 could not be built. The number of electroc…
ZnO‐based varistor ceramics were sintered under various conditions to optimize their mechanical strength. For highest strength, the optimum sintering temperature was 1070°C or below. At higher maximum temperature, the strength decreased because of grain coarsening and the increasingly inhomogeneous distribution of sec…
Understanding the process of self-assembly of peptides has been important in various biomedical engineering applications. This work focuses on the effect of peptide concentration on the molecular self-assembly of an ionic-complementary peptide, EAK16-I (AEAKAEAKAEAKAEAK), in aqueous solution. The surface tension and s…
Dielectric materials are frequently used in satellite structures for substantial savings in weight. Their dielectric nature and the effect of different forms of radiation encountered in space combine to accumulate electrical charges resulting in the occurrence of electrostatic discharges which cause harmful interferen…
Abstract A novel and effective protocol for the preparation of superparamagnetic immunomicrospheres has been developed. First, micro‐size magnetic poly (methacrylate‐divinylbenzene) (PMA‐DVB) spheres were prepared by a modified suspension polymerization method. The oleic acid coated magnetite (Fe 3 O 4 ) nanoparticles…