Materials Literature
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Divalent europium ion doped metal nitride phosphor, of Sr2Si5N8:Eu2+, was synthesized by using Sr carboxylates as a reducing agent and the preparation conditions were optimized. The obtained samples derived from Sr acetate doped with 4 at% Eu2+ to Sr content showed a strong emission at about 630 nm under the excitatio…
It is more precise to characterize the repellency of the fabric by contact angle.The method of measuring the contact angles between a droplet and fabric is one of the most commonly methods,whereas hypsometry and goniometry are most commonly used methods in the measurement of an angle.It is found through actual tests t…
The problem associated with the use of an impedance spectroscopy method for the determination of the state (in the first place, depth of discharge) of primary power sources in the system thionyl chloride-lithium is considered. The conclusion is made on the basis of an analysis of literature data concerning the problem…
κ-(BEDT-TTF) 4 Hg 2.89 Br 8 is an ambient-pressure superconductor with a transition temperature ( T c ) value of 4.3 K. This salt can be considered as an electron system that is naturally carrier doped into a Mott insulator by a slight excalation of the Hg ions. In order to obtain information about the nature of the m…
Growth, shape and texturing dynamics of single 2D spherulites areanalyzed using the Landau-de Gennes (LdG) liquid crystal model ofisotropic-nematic phase ordering. Direct numerical simulation showsthat non-circular nucleation due to anisotropy in the interfacialtension results in non-circular shapes in the early stage…
Molecular dynamics simulations are performed to study the growth of diamond-like carbon (DLC) films on the atomic scale. The behaviors of incident atoms on the surface are classified into four categories: surface freezing, migration, implantation and rebounding, according to the atomic movement. The behaviors of incid…
Zirconia fine particles were synthesized by thermal and hydrothermal decomposition of zirconium tetra-tert-butoxide in an externally heated tube flow reactor with two inlet section arrangements - long or short inlet nozzle. Particle production and characteristics were studied in dependence on reactor temperature, prec…
In recent years there has been a considerable interest in developing new types of low molecular mass organogelators because of their potential technological applications. Several classes of low molecular weight compounds form stable and efficient gels with various organic solvents at low concentrations. One-component…
The optical properties of chalcogenide thin films from the pseudo-binary (As 2 Se3) 1-x (Agl) x system, where x=5, 10, 15, 20, 25, 30 and 35 mol.% were studied with respect to the influence of Agl incorporation. Two techniques - vacuum thermal evaporation (VTE) and pulsed laser deposition (PLD) were applied to prepare…
The hydrophobicity recovery characteristics of HTV silicone rubber (SIR) at different corona deterioration stage have been investigated with static contact angle method. The surface microstructure variation with the corona deterioration processing, along with the chemical composition change at the end of corona discha…
A copper hillock induced interconnect failure mechanism is presented. The copper hillock is frequently generated during a copper dual damascene process and hillock formation is found to degrade the interconnect integrity by affecting the following process steps. The copper hillock appears to damage the SiN capping lay…
A mechanistic study was performed to investigate plasma damage and CFL, recovery of porous carbon-doped oxide (CDO) low k surfaces. First the nature of damage was examined for different plasma treatments in a standard RIE chamber then followed by a study using a downstream hybrid plasma source with separate ions and a…
Mg/Pd laminate composites (Mg/Pd = 6) prepared by a repetitive-rolling method can reversibly absorb and desorb a large amount of hydrogen, up to 1.47 H/M (4 mass%) at 573 K. Pressure-composition isotherms of the Mg/Pd laminate composites show two plateaux, PL=0.2 MPa and PH=2 MPa, during hydrogen absorption and desorp…
The pulsed electroacoustic (PEA) technique was used to perform space charge measurements in polymeric power cables. However, for a practical dc power cable the electric field is affected by conductivity of the material, which is a function of both temperature and electric field. The coupled problems inflict difficulti…
In the present study, hydrogen-absorbed Mg2Ni intermetallic powders were prepared by mechanical alloying under an Ar atmosphere. Modification of the Mg2Ni powders was attempted by adding silver (0.5, 1.0, 2.5, and 5.0 at%) into starting elemental powder mixtures. The as-milled powders were examined as a function of mi…
Charge accumulation characteristics in dielectric materials for a spacecraft were studied to elucidate spacecraft charging problems in a high-energy radiation environment. This study especially addressed spacecraft charging accidents caused by internal charge accumulation in dielectric materials irradiated by electron…
Temperature-dependent dark and optical characteristics of the heterojunction phototransistors (HPTs) with and without sulfur treatment are studied. As compared to the HPT without treatment (HPT A), treatment at for leads to a reduced p-i-n dark current and a reduced collector dark current for the HPT (HPT D) in the em…
Due to their excellent thermal shock and slag resistance at high temperatures, alumina–graphite refractories are used extensively in the steel industry. The degradation of carbon based refractories through carbon depletion is an important issue and a fundamental understanding of refractory behaviour at high temperatur…
Abstract— In‐plane‐switching LCD (IPS‐LCD) technologies originally developed for LCD monitors and TV applications are applied to mobile applications. Advantages of the IPS mode over other optical modes for mobile applications are quantitatively clarified. The panel achieves stable color reproduction and chromaticity i…
This paper describes the use of finite element software to provide a two-dimensional time harmonic analysis of cavitational activity within an ultrasonic cleaning vessel as used within hospitals and dental surgeries. A rational for the simulation method utilized and input parameters affecting the model is discussed. P…