Materials Literature
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Rosalind Franklin's earliest research involved studies of coal, carbon, and graphite. She made a number of enduring contributions in these areas, most notably identifying the fundamental distinction between graphitising and non-graphitising carbons. Her work on carbon also provided a valuable background for her later…
Friedel's salt, a mineral anion exchanger belonging to the family of the layered double hydroxides (LDHs), was synthesized and used as a novel electrode modifier for the accumulation of iodide species and their subsequent voltammetric determination at carbon paste. Beside the preconcentration features of Friedel's sal…
Abstract Soluble organoiron polyethers, thioethers, and amines were synthesized via nucleophilic aromatic substitution reactions. The synthesis of these classes of organometallic polymers involved either the reaction of cyclopentadienyliron complexes of dichloroarenes with various oxygen and sulfur dinucleophiles or t…
Rubber toughening usually involves the addition of rubber particles to a rigid polymer in order to promote energy absorption through the initiation of local yielding, which takes the form of multiple crazing and/or extensive shear yielding. In addition to these classic mechanisms, recent studies of deformation mechani…
Tungsten oxide thin films with different stoichiometry have been deposited on In2O3 : SnO2 glass (ITO) and Si wafer by pulsed laser deposition (PLD) technique at different deposition temperatures and oxygen pressure. The structural properties of WO3 thin films were analyzed by using a scanning accessory of transmissio…
Charpy impact tests of Japanese and US reference V-4Cr-4Ti alloys, NIFS-HEAT-1 (180 wppm oxygen) and US832665 (310 wppm Oxygen), were examined after gas-tungsten-arc (GTA) welding in a purified argon atmosphere. To investigate the effects of further reduction of oxygen level in the fusion zone, filler wires made of HP…
Macor® machinable glass-ceramic and commercially pure (cp.) titanium were joined by active metal brazing, using a 64Ag–34.5Cu–1.5Ti (wt.%) filler alloy. The influence of the brazing temperature and holding stage on the microstructure and hardness profile of the interface, as well as on the shear strength of the joint,…
Previously, we showed that exposure of human osteoblasts to titanium particles stimulates protein tyrosine phosphorylation (PTP), activates the transcription factor nuclear factor kappaB (NF-kappaB), and causes an approximately 50% decrease in the steady-state messenger RNA (mRNA) level of procollagen alpha1[I]. In th…
Thin films of boron carbide were formed by pulsed laser deposition at room temperature using a sintered B4C target. The nature of the particulates embedded in the films and the composition and bonding states of the films varied depending on the laser fluence. The formation of non-stoichiometric amorphous films appeare…
Short-range atomic structures including the chemical environment and interatomic distance along the in- and out-of-plane directions in [Co (1 ML)/Pd(3 ML)]13 multilayer films (ML notes monolayer) are studied using polarized Co K-edge extended x-ray absorption fine structure. The chemical Co environment is found to be…
The melting temperature (Tm) of thin poly[ethylene-co-(vinyl acetate)] films coated on a silicon wafer was investigated. Ellipsometry was used to measure the Tm which was found to decrease dramatically when the thickness of the film is less than 300 Å. The relationship between the lamellar thickness and the Tm was tho…
The purpose of this research is to study the pressure drop profiles of biodegradable polybutylene succinate (PBS)/CO2 solutions in a slit die and to measure the rheological properties of the solutions as a function of the blowing agent concentration. A slit die with four pressure transducers has been designed to descr…
The metallic Co catalyst for the Fischer-Tropsch reaction is prepared by reduction of Co salts impregnating microporous silica. The average size of the metallic Co clusters is determined from the average number of neighbours deduced from Co K-edge EXAFS of catalyst samples. A model EXAFS signal constructed from the sc…
Abstract CuInS2 and AgInS2 semiconductor nanorods are prepared readily from a stoichiometric mixture of In(S2CNEt2)3 and Cu(S2CNEt2)2 or Ag(S2CNEt2), by remove of the thione groups with ethylenediamine at 195 °C in a solvothermal process.
The microphase structures of ultrathin symmetric polystyrene/poly(methyl methacrylate) diblock copolymer films on silicon substrate under variation of film thicknesses in the nanometer range were investigated by using AFM. The microphases were identified by simultaneously measuring the topography and the phase-shift i…
Liquid crystal polymers are sometimes called super polymers--with good reason. Their wide range of exceptional properties and ease of processing make them design candidates for many demanding applications. This new book provides a thorough review of LCP technology with the emphasis on the chemistry, synthesis and char…
The effective thermal conductivity of the pebble beds is one the most important design parameters for pebble bed solid breeder blanket. In the framework of IEA Implementing Agreement on Solid Breeder Subtask Group, measurement of pebble bed thermal conductivity by the hot wire method were defined as one of tasks to pr…
Abstract The Raman spectra of polycrystalline Cr 3 O 8 and Cr 2 O 5 powders were measured. The powders were prepared by thermal decomposition of CrO 3 under flowing oxygen. Their composition was verified with x‐ray diffraction. Raman spectra were excited with both 514.5 and 647.1 nm radiation. The spectral intensities…
Abstract Although most biochemistry curricula include some treatment of light absorption and spectrophotometry, discussion of fluorescence spectroscopy is generally omitted. This omission is unfortunate given the increasing use of fluorescence in many fields of biochemical research. In this paper we briefly review the…
Abstract Mixed-layer illite-smectite from Lower Palaeozoic sedimentary rocks, on both sides of the Teisseyre–Tornquist tectonic zone (TTZ) in northern Poland, was studied by X-ray diffraction and dated by K-Ar means. The percentage of smectite layers in illite-smectite (%S) indicates maximum palaeotemperatures of 125–…