Materials Literature
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The adsorption isotherms of oleuropein and rutin were evaluated at different temperatures, pH values, and solid/liquid ratios. The experimental data of adsorption isotherms were well fitted to a Langmuir model. The maximum adsorption capacities were determined as 108 mg of oleuropein/g of silk fibroin and 21 mg of rut…
Local poling of ferroelectrics by the sharp conducting tip of a scanning force microscope (SFM) is studied experimentally and theoretically. The formation of the inverse domain under the SFM tip, where the polarization is oriented in the direction opposite to that of the poling field, is reported for bulk ferroelectri…
The influence of geometrical factors on the galvanic current distribution for the magnesium alloy AZ91D coupled to steel was investigated using a Boundary Element Method (BEM) model and experimental measurements. The galvanic current distribution calculated from the BEM model was in good agreement with the experimenta…
In the present study, the influence of gas compositional and pressure conditions on thermographic phosphor thermometry was investigated. A heatable pressurized and optical accessible calibration chamber was built to measure the phosphorescence decay time at different temperatures as well as at different partial and ab…
The design, synthesis, and relaxivity properties of highly soluble TACN-capped trishydroxypyridonate-Gd(III) complexes are presented. Molecular mechanics modeling was used to help design a complex capable of possessing three water molecules in the inner metal coordination sphere, an attractive property for high-relaxi…
Abstract Nanocomposites based on an ethylene–vinyl acetate copolymer (27 wt.‐% vinyl acetate) and multiwall carbon nanotubes (MWNTs) have been prepared by melt blending and their thermal degradation and flame retardant properties have been evaluated. Special attention has been paid to the influence of the nanotube nat…
We calculate the optical properties of carbon nanotubes in an external static electric field directed along the tube axis. We predict strong Franz-Keldysh oscillations in the first and second band-to-band absorption peaks, quadratic Stark effect of the first two excitons, and the field dependence of the bound exciton…
In magnetoresistive (MR) studies of magnetic multilayers composed of combinations of ferromagnetic (F) and non-magnetic (N) metals, the magnetic moment (or related 'spin') of each conduction electron plays a crucial role, supplementary to that of its charge. While initial analyses of MR in such multilayers assumed tha…
We show it is possible to assemble nanoparticle-polymer layers in a controllable manner dictated by the difference in nano-object morphology and dielectric properties. A thin (10-100 nm) layer of the two components is spin coated onto a solid substrate and the system thermally aged to activate a cross-linking process…
Abstract The assessment, control, and mitigation of reaction hazards is primarily based on the use of kinetic models. These kinetic models are used for the assessment of reaction hazards, the operation and control of the reactor, the design of emergency relief systems, estimation of the consequences of a reaction runa…
This paper describes a cation exchange approach to the synthesis of metal chalcogenide core-shell particles with the same size but a number of different compositions. This method begins with the preparation of colloidal spheres of amorphous Se (a-Se), followed by their reaction with Ag atoms to form Se@Ag2Se spheres.…
The knowledge of chemical and magnetic conditions at the Co40Fe40B20 / MgO interface is important to interpret the strong annealing temperature dependence of tunnel magnetoresistance of Co-Fe-B / MgO / Co-Fe-B magnetic tunnel junctions, which increases with annealing temperature from 20% after annealing at 200C up to…
The General Thermodynamic Theory of Sintering, formulated by the author in 1998 is given. This theory is applied to the problem of swelling of materials under conditions of radiation. Driving forces, caused by the presence of the evolution of heat in the volume of a sample (electric contact, hf, inductive heating or p…
Recent neutron scattering measurements reveal spin and charge ordering in the half-doped nickelate, ${\mathrm{La}}_{3∕2}{\mathrm{Sr}}_{1∕2}{\mathrm{NiO}}_{4}$. Many of the features of the magnetic excitations have been explained in terms of the spin waves of diagonal stripes with a magnetic coupling structure which is…
The different mechanisms involved in the alloying of epitaxial nanocrystals are reported in this letter. Intermixing during growth, surface diffusion and intra-island diffusion were investigated by varying the growth conditions and annealing environments during chemical vapor deposition. The relative importance of eac…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCalcium Carbonate Formation and DissolutionJohn W. Morse, Rolf S. Arvidson, and Andreas LüttgeView Author Information Department of Oceanography, MS-3146, Texas A&M University, College Station, Texas 77843, and Department of Earth Science MS-126, Rice University, 6100 Main S…
pH-gesteuert: Eine Reihe zwölfkerniger Koordinationscluster von NiII und CoII mit isostrukturellen Gerüsten wurde mit zuvor unerreichter Kontrolle über Struktur und Zusammensetzung hergestellt. Je nach pH-Wert lassen sich andere Cluster in Lösung durch Kryospray-Massenspektrometrie nachweisen. Die Anordnung der Metall…
The authors performed resistance switching of a VO2 film grown on the Al2O3 substrate by applying electric pulses. As a consequence, Joule heat of about 1W has been induced in a 15×50μm2 area between the two electrodes. Using synchrotron-based infrared microspectroscopy, the authors mapped the propagation of Joule hea…
Abstract Three new chromophores containing an electron‐donating dithiafulvene (DTF) unit attached to derivatives of retinal, diethynylethene (DEE), and dihydroazulene (DHA), respectively, are synthesized and characterized by using X‐ray crystallography as well as absorption and fluorescence spectroscopy. In general, t…