Materials Literature
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The effect of the deviation of a magnetization reversal regime of electrical steel specimens from a sinusoidal induction regime on the specific magnetic losses is considered.
The size distribution of a bubble population can be estimated from measurements of the frequency-dependent attenuation through the bubble cloud. These attenuation values are the inputs to an inversion method that makes use of a resonant bubble approximation wherein it is assumed that only resonant bubbles contribute t…
An innovative concept in the development of advanced coating deposition and ion implantation method including an application of filtered DC metal plasma source and high-frequency short-pulsed negative bias voltage with a duty factor in the range 10 ÷ 99% are considered. The regularities of ion implantation and metal p…
Nanosized La1-xCuxMnO3(x≤0.1) was synthesized at different temperatures by using heteronuclear complexing method. X-ray diffraction analysis show that sample consists of two phases: La1-xCuxMnO3(x≤0.1) having R3̅c space group with rhombohedral symmetrical structure and La2Cu2O5having C2/c space group with monoclinic s…
We analyzed the color stability of blue phosphorescent organic light emitting diodes (phOLEDs) as device operation. In the blue phOLEDs, color stability is one of the most important factors during operation for commercialization. Therefore, we measure the electroluminance spectrum in the as-dep. state and after the li…
Acknowledgments This work was financially supported by the Na-tional Natural Science Foundation of China (21075079), Program forNew Century Excellent Talents in University (NCET-10-0557), and theProgram for Changjiang Scholars and Innovative Research Team inUniversity (IRT 1070).Open Access This article is distributed…
After a long operation time, steam turbine blades need to be removed, inspected and/or replaced. Numerous steam turbine fleets have blades that are attached to the rotor discs by the means of pins. At the time being, the pins are removed using a hydraulic jack. Roughly 10% of the pins of steam turbine rotor need to be…
Effect of mechanical activation of phosphate raw materials on the main characteristics of their subsequent decomposition with an aqueous solution of a weak acid and a complexing agent was studied. It was shown that, not being a versatile procedure, mechanical activation is rather efficient for well crystallized fluoro…
Silicon nano-patterned membrane reflectors - Si-MR (2-dimensional photonic-crystal slabs) hold many promising applications in photonic integrated circuits and can be used as ultra-compact mirrors [1] with controlled spectral response [2]. Built entirely from dielectric materials, such membrane reflectors can have very…
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The coupling between the elements of a metamaterial is of great importance in understanding the bulk response. In addition, it can also give rise to a variety of linear and nonlinear effects. In this talk several of these effects are presented, including strong optical activity, control of nonlinear frequency shift, a…
Currently, GaN white LEDs exhibit luminous efficacy greater than 150 lm/Watt, and external quantum effiencies higher than 50% at low drive currents. However, current commercial LEDs grown on the c-plane of the wurtzite crystal suffer from the quantum confined Stark effect (QCSE) due to the large polarization-related e…
The flow stress change of 3Cr1Mo0.25V steel was researched in this paper through hot compression tests performed in a temperature range from 800 to 900oC and with a strain rate variation from 0.01 to 10s-1. Flow stress constitutive equation was constructed according to true stress-strain curves of 3Cr1Mo0.25V steel. R…
The flash method for measuring thermophysical properties (TPP) has attracted wide-spread interest since it was introduced by Parker et al (1961). In an extension of this technique, we introduced a front-face flash-monitoring method (FFFMM) in which a radiative source delivering short heat pulses and an infrared detect…
Surface discharges at the solar array on the spacecrafts are originated from electrification. Now, estimation of the electrical potential of the spacecraft by electrification is carried out. But, the reliability of the calculated results depends on the accuracy of the physical properties. One of the desired property i…
A 2D PC introduced into the ultrathin active layers of photodetecting devices can markedly improve the photoelectric conversion efficiency. We have observed 20 times enhancement at a specific wavelength in the photocurrent of a PC sample relative to an unpatterned one as a result of better Q-matching between the photo…
Arc plasma synthesis of iron nanoparticles: morphological, dielectric and magnetic characterization are discussed.
A diode pumped CW Erbium (Er)-doped Zr-Ba-La-Al-Na (ZBLAN) fluoride glass fiber laser operating at 2.78 μm was demonstrated using a guided mode resonance filter (GMRF) as an external cavity mirror.
Experimental methods for aluminum nitride rate increase at combustion of aluminium nanopowder in air, such as increase of aluminum nanopowder sample mass, air volume limitation, etc. are examined in the paper. The influence of infrared radiation on aluminium nanopowder and its mixtures samples on aluminum and titanium…
Epitaxial-like colloidal quantum dot films are demonstrated as potential single material system for red, green, and blue lasing. These prospects derive in part from the access to single exciton gain in the optically dense films.