Materials Literature
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The electro-optic properties of Kerr effect based liquid crystal display (LCD) with zigzag electrode structure are studied using a three-dimensional simulator. The optimal bending angle of the zigzag in-plane switching (IPS) electrodes is found to be 90°, which is different from the conventional strip electrodes. Alth…
The new mineral species pyracmonite , ideally (NH 4 ) 3 Fe(SO 4 ) 3 , was found in a medium-temperature (~250°C) active intracrater fumarole at La Fossa crater, Vulcano, Aeolian Islands, Sicily, Italy. It occurs on a pyroclastic breccia as colorless to white prismatic crystals up to 0.2 mm in length, in association wi…
Abstract The phase-field model of Wheeler, Boettinger and McFadden is extended to the case of fast solidification in which local non-equilibrium phenomena occur in the bulk phases and within the diffuse solid – liquid interface. Such an extension leads to the characteristic diffusion speeds of atoms (both within the d…
Polyaniline (PAni) nanofibers doped with HCl and CSA have been irradiated with 90 MeV O(7+) ions with fluence of 3 x 10(10), 3 x 10(11) and 1 x 10(12) ions cm(-2). TEM micrographs show a decrease in the fiber diameter with increasing irradiation fluence, which has been explained on the basis of the Coulomb explosion m…
The influence of the polymeric amorphous materials on the physicochemical and drug release properties of drug-loaded nanocapsules as well as their role on the protection of the entrapped drug against the degradation induced by UV radiation was evaluated. Nanocapsules were prepared by interfacial deposition of preforme…
There are no standardized methods available at present for artificial pollution testing of polymeric insulators. Modified Salt Fog and Solid Layer tests based on procedures described in IEC 60507, intended for ceramic insulators, are thus often applied. Among methods evaluated for polymeric insulators made of hydropho…
The ion exchange of octosilicate with a series of quaternary organoammonium ions was examined. The ion exchange proceeds almost quantitatively to replace the interlayer sodium ions. When n -alkyltrimethylammonium ions were exchanged with sodium ions, the basal spacings increased with the alkyl chain length, showing th…
In a core-disruptive accident of a sodium-cooled fast breeder reactor, core debris may settle on the coresupport structure and/or in the lower inlet plenum of the reactor vessel because of rapid quenching and fragmentation of molten core materials in the subcooled sodium plenum. Coolant boiling is the mechanism drivin…
Isothermal and transient steam oxidation kinetics of the fuel rod cladding materials Duplex, M5™, E110, and Zircaloy-4 (Zry-4) were determined in separate-effect tests at various temperatures between 1073 and 1673K. All materials show parabolic time dependence at all temperatures, at least at the beginning of the oxid…
The dispersion of pristine multi-walled carbon nanotubes in various common organic solvents and water has been investigated. Sedimentation tests, optical microscopy, transmission electron microscopy and Tyndall effect tests are employed. The results clearly show that N-methyl-2-pyrrolodone, acetone, tetrahydrofuran an…
Issues pertaining to the effect of quantum dots (QDs) on the properties of a nematic liquid-crystalline mesophase are briefly considered. The influence of nanoobjects representing CdSe/ZnS semiconductor QDs on the temporal characteristics of liquid crystals (LCs) belonging to the class of cyanobiphenyls has been studi…
The accuracy of protein structures, particularly their binding sites, is essential for the success of modeling protein complexes. Computationally inexpensive methodology is required for genome-wide modeling of such structures. For systematic evaluation of potential accuracy in high-throughput modeling of binding sites…
In this work, the Aluminum Conductor Composite Core¿ (ACCC) was numerically investigated to evaluate stress distributions when subjected to thermal and mechanical loads. The thermal analysis was conducted to simulate the cooling cycle of the rod from 250°C to room temperature. Three types of mechanical loads were cons…
The temperature dependence of the crystalline structure and the lattice parameters of Pb1-xLaxZr0.40Ti0.60O3 ferroelectric ceramic system with 0.00 x 0.21 was determined. The samples with x 0.11 show a cubic-to-tetragonal phase transition at the maximum dielectric permittivity, Tmax. Above this amount and especially f…
The results of studying the hydrogen permeability and physicomechanical properties of zirconium alloy irradiated with a pulse electron beam are presented. It is established that, with an increase in the beam energy, a surface layer of this material is hardened to depths of about 2.5 μμm. The depth distribution of Youn…
High-transmissivity composite left/right-handed uniaxial bulk metamaterials were fabricated in a multilayered dielectric/hole metal array technology and experimentally assessed at submillimeter wavelengths (0.4–0.9 THz) by time-domain spectroscopy. From the frequency dependence of the complex scattering parameters, we…
The structure and properties of the (001) surface of indium oxide (In 2 O 3 ) and indium tin oxide (ITO) are investigated theoretically. Ultrasoft pseudopotentials and the PBE exchange-correlation functional are used in our calculations. The calculated band structure of bulk In 2 O 3 , ITO, and their slabs with variou…
The polyaniline/polysulfone (PAN/PSF) composite films are prepared by electropolymerization, and then PtRu particles are deposited into this composite film to obtain the PtRu-modified polyaniline/polysulfone (PtRu/PAN/PSF) electrodes. Their morphology and chemical component are characterized by scanning electron micro…
Abstract This work presents the experimental characterization of the fatigue crack growth resistance of an ultrafine-grained (UFG) copper alloy with a purity level equal to 99.90%. The UFG copper has an average grain size of 300 nm obtained by a 8-passes ECAP process throughout route Bc. The crack propagation behavior…
Abstract The corrosion resistance of phosphated and painted steels is associated with the integrity of phosphate and paint layers. In this work, a methodology to measure the porosity of phosphated coatings based on cathodic polarization technique with an electrolyte of a sodium sulfate aqueous solution was developed.…