Materials Literature
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Previous studies in the literature have suggested that glow corona discharges could be potentially used to control the frequency of lightning flashes to grounded objects. Such studies use simplified one-dimensional corona drift models or basic empirical equations derived from high voltage experiments to assess the eff…
To study the influence of the wind speed on the generation of corona current in two different needles, a wind tunnel was designed and constructed. Needles were tested in a point-to-plane arrangement under laminar air flow. A constant background voltage is applied to the electrode arrangement, while air velocity varied…
Transformers are one of the most critical and cost-intensive components in the electrical power system. Dissolved gas analysis (DGA) has been proven to be a reliable technique for diagnosis of incipient faults in oil-filled transformers. Traditionally, DGA is usually performed in laboratories using standardized method…
The zinc alkoxide molecules in di-μ(3)-ethanolato-diethyltetrakis(μ(2)-2-methyl-4-oxo-4H-pyran-3-olato-κ(3)O(3),O(4):O(3))tetrazinc(II), [Zn(4)(C(2)H(5))(2)(C(2)H(5)O)(2)(C(6)H(5)O(3))(4)], (I), and bis(μ(3)-2-ethoxyphenolato-κ(4)O(1),O(2):O(1):O(1))bis(μ(2)-2-ethoxyphenolato-κ(3)O(1),O(2):O(1))bis(μ(2)-2-methyl-4-oxo…
The interaction effect of two protons on their migration in bulk barium zirconate was investigated to understand the difference between experimental and calculated energy barriers for proton migration using density functional theory. There were four different proton structure configurations in terms of proton interact…
The articles gives a comparison of the rates and the degree of destruction of anionic SAS-alkyl benzene sodium sulfonate (ABS) in heterogeneous (O 2 /TiO 2 /UV, H 2 O 2 /TiO 2 /UV) and homogeneous (O 2 /UV, H 2 O 2 /UV) oxidizing systems on several TiO 2 samples at UV irradiation by a SVD-120 high-pressure mercury-qua…
A comparative evaluation of the performances of two current control techniques namely dead beat controller and hysteresis current controller is presented in this paper. A discrete Kalman Filter is used for reference current estimation for compensating delays occurring due to digital signal processing. In order to test…
This paper describes a control method of turn-on/off angles to improve the efficiency of the switched reluctance generator(SRG) with a power closed-loop control system, and the inner-loop of the system is current hysteresis control. The SRG control system is constituted by the PI power controller and the two-level cur…
Magnetization hysteresis curves have been measured on Co granular multilayers, (Al2O3/Co/Pt)N (N = 1 and 25), with the applied magnetic field parallel and perpendicular to the substrate plane. In all samples perpendicular magnetic anisotropy was observed. For Co particles with average diameter 3 nm, the coercive field…
In this paper, we investigate the strong coupling effects between a meta-atom and a metal-insulator-metal (MIM) nanocavity. By changing the meta-atom sizes, we achieve the meta-atomic electric dipole, quadrupole or multipole interaction with the plasmonic nanocavity, in which characteristic anticrossing behaviors demo…
Nonlinear optics at nanoscale is a recent fascinating research field. Among the numerous nonlinear optics phenomena, stimulated Raman scattering is one of the most interestingphenomena, due to its significant implications from both fundamental and applicative point of view. In this paper, the observations of stimulate…
ZnO and Ge-doped ZnO (GZO) thin films were fabricated on c -Al 2 O 3 substrates at various oxygen pressures (10, 50, 100, 200, and 400 mTorr) and at 300 °C by using a pulsed laser deposition method. The transmittances of the films were measured by using ultraviolet-visible spectroscopy. The absorption of the band gap…
In this study, we investigated the effects of the key parameters of high-energy electron-beam irradiation (HEEBI) on the optical, electrical, and structural properties of indium-gallium-zinc oxide (IGZO) films grown on glass substrates at room temperature by using radio-frequency magnetron sputtering techniques. Hall,…
Nanocrystal samples (particle size about 90 nm) of Eu3+-doped rutile titanium dioxide (TiO2) nanocrystals (rutile Eu3+/TiO2 nanocrystals) were synthesized by the sol–gel method with hydrothermal treatment. The pressure effect on photoluminescence (PL) and Raman spectra of the rutile Eu3+/TiO2 nanocrystals was investig…
The residual lattice strains of nanocrystals, which are responsible for the formation of states with transverse magnetic anisotropy in samples of the Fe-Si-Nb-B-Cu alloys (Finemets) subjected to annealing under tensile loading with the subsequent relaxation annealing at temperatures in the range from 500 to 600°C, hav…
The temperature dependence of the complex relative permittivity in a relaxor ferroelectric solid solution 24Pb(In1/2Nb1/2)O3–46Pb(Mg1/3Nb2/3)O3–30PbTiO3 (PIN–PMN–PT) crystal poled and depoled was measured from room temperature to 200 °C at various frequencies. The poled sample exhibits transitions from the ferroelectr…
We have studied the temperature dependence and anharmonic coupling of the local vibrational modes (LVMs) associated with Mg-H complexes in heavily doped InN:Mg. Two main LVM peaks are observed which are probably related to two different H-impurity bond lengths. The temperature dependence of the higher-frequency mode,…
Laser cladding of the A 3 Ti + TiC preplaced powders on the Ti–6Al–4V alloy can form the Ti 3 Al/TiC ceramic layer, which improved the wear resistance of the substrate. In this study, the influence of 7 wt% yttria partially stabilized zirconia ( YPSZ ) on the surface performance of the Ti 3 Al/TiC ceramic layer was re…
Many commercially available photonic textile products are made by integrating conductive yarns into textiles and attaching light-emitting diodes (LEDs) to them. Mechanical fatigue due to repeated bending at the LED attachment sites is the main cause of failure in such products. Here, we present a novel encapsulation m…
The influence of temperature and input energy on the fluorescence emission cross section of Nd 3+ :YAG crystal is studied. The stimulated emission cross sections of quasi-three-level systems are determined in a temperature range from −30 to 60°C and an input energy range from 18 to 75 J. The cross section is found to…