Materials Literature
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Lanthanum cobaltite (LaCoO3) nanosystems were synthesised by an innovative combined use of the chemical vapor deposition (CVD) and sol-gel (SG) routes. In particular, a lanthanum oxyfluoride based layer was deposited by CVD on CoOx(OH)y SG substrates (xerogel). The subsequent thermal treatment in air, between 400 and…
The goal of this work is to make a contribution to the understanding of the microscopic mechanisms of H-induced intergranular damage. We develop an embedded-atom method interatomic potential for H in the Al–Mg system with the main aim of reproducing the current understanding of H trapping to vacancies. This model is u…
We have refined the crystal structure of winstanleyite from the type locality, the Grand Central mine, Tombstone, Arizona, in space group I21/a¯3 to a final R index of 2.03%. Unit-cell parameters of the crystal examined are: a 10.965(1) Å, V 1318.3(2) Å3, Z = 8. The structure previously reported for the synthetic anal…
The present paper describes the erosion of 60 μ m thick diamond coatings on tungsten, 600 μ m thick free standing diamond brazed to tungsten carbide and two grades of cemented tungsten carbide and stainless steel type 316. The erosion rate of the diamond samples was between 12 and 30 times lower than that of tungsten…
Submicrometer α‐alumina powder was successfully synthesized from seeded aluminum hydroxide peptized with tetraethylammonium hydroxide (TENOH) and hydrothermally treated at 200°C, using α‐alumina particles as seeds. The powders were characterized by XRD, SEM, DTA‐TG, and BET analyses. Results showed that seeding could…
Domain switching behaviors of sol-gel derived lead zirconate titinate (PZT) films have been characterized for ferroelectric memory applications by measuring P - E hysteresis curves as a function of frequency, temperature and electrode size. The coercive field ( E c ) of PZT films strongly depended on the measuring fre…
Abstract Papers published during 2001 - 2002 on the synthesis and preparation of polymers and polymer-based devices and their applications are reviewed. Polymers for drug and gene delivery, gene therapy, controlled drug release, conjugation with peptides, proteins, and nucleotides, tissue engineering, bone repair and…
The Rayleigh-scattered light intensities of silica glasses containing chlorine with concentrations from 0 to 1.8 mol% were measured. The scattered intensity was found to change linearly to the fictive temperature but was independent of chlorine concentration within experimental error. The result indicates that chlorin…
Abstract Ternary composites based on glass fiber reinforced polyethersulfone (gPES) modified by a liquid crystalline copolyester (R5) were obtained by injection molding at different nozzle temperatures and at LCP contents up to 20%. The blends showed two pure amorphous phases. The ability of R5 to improve processing w…
Various methods and the underlying principles to evaluate the bending characteristics of fabrics and fabric-like membranes are described. In comparing various methods, their limitations as well as utilities are also discussed. It has been observed that a number of relatively simpler methods produce a wealth of informa…
To evaluate the effect of corrosion potential on the stress corrosion cracking (SCC) initiation lifetime of nickel-base alloys, periodically unloaded uniaxial constant load (PU-UCL) tests were conducted, simulating boiling water reactor (BWR) water chemistry conditions. Utilizing the exponential distribution model for…
It is known that the corrosion resistance of stainless steel is deteriorated by blasting, but the reason for this deterioration is not clear. A blasted austenitic stainless steel plate (JIS-SUS304) has been characterized with comparison to the scraped and non-blasted specimens. The surface roughness of the blasted spe…
This paper describes a simple production method for carbon nanoparticles by pulsed arc discharge in water, which is triggered by the electrical breakdown of water between graphite electrodes. High-resolution transmission electron microscopy (HRTEM) observation revealed that the main products obtained by the proposed m…
Abstract In the blended solid of merocyanine (MC) and polythiophene (PTh)/TiO2 p–n hetero-junction solar cells, a hole-transfer from the excited state of MC to the ground-state of PTh accelerated the charge separation in the depletion layer formed at the TiO2/MC+PTh interface, enhancing the photovoltaic properties. Th…
Cryogenic targets for the National Ignition Facility require uniform solid layers inside spherical capsules at temperatures ~1.5 K below the triple point of hydrogen. Uniform layers have been successfully formed near the triple point. However, upon subsequent cooling the layers degrade. We report here recent attempts…
This book on Clays and Clay Minerals is the first in a series of books that presents an objective view of the type and nature of industrial rocks and minerals in Jordan. The chapters in this book examine the diversity of clays in Jordan and summarize their origin and their mineralogical, chemical and industrial proper…
Core-shell composite nanoparticles consisting of a gold core and polypyrrole shell were prepared and stabilized with the poly(amidoamine) dendrimer. An in situ redox polymerization technique was used in which pyrrole reduced Au3+ to Au and then oxidized to polypyrrole. The presence of gold nanoparticles as a core was…
The structure formation and phase behavior of supramolecular hairy-rod polymers consisting of rodlike polymer chains with physically bonded side chains are investigated in the melt state using small-angle X-ray scattering. The supramolecules consist of poly(2,5-pyridinediyl), complexed by methanesulfonic acid to form…
We evaluated the performances of the hydrogen-loading technique to reduce the radiation-induced absorption in optical fibers in the visible part of the spectrum. A reduction factor as large as one order of magnitude can be obtained in high dose-rate regime. Based on a spectral deconvolution method, we showed that hydr…
Abstract The interaction of the {10 4} cleavage surface of calcite with Hg(CH 3 COO) 2 aqueous solutions with concentration of 5 mM Hg(II) (pH ≈3.5), was investigated using microscopic and spectroscopic techniques. In situ atomic force microscopy experiments showed that surface microtopography changes significantly as…