Materials Literature
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This paper presents numerical results in the form of graphs of the power reflection coefficients for electromagnetic signals normally incident upon a conductive plane covered with two layers of inhomogeneous plasma slabs. The plasma electron density varies only in the direction perpendicular to the plane. Parameters c…
Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.
A differential structure magnetic sensor is proposed. It is comprised of two new-type silicon magnetic sensitivity transistors (SMSTs) with similar characteristics and has a common emitter, two bases and two collectors. The sensor is fabricated by micro electromechanical system technology on a (100) high resistivity s…
We have demonstrated a low-insertion-loss 8-channel interleaved angled MMI CWDM structure on the SOI platform. It requires only a single-step lithography and etching for fabrication and has good tolerance to fabrication errors.
Thin films of aluminum oxide of thickness 293–433 nm were grown on fused silica substrates by pulsed laser deposition (PLD) of an alumina target with KrF excimer laser radiation. The effects of oxygen background pressure (0.5–50 Pa) and substrate temperature of room temperature to 800 °C were investigated on thickness…
[Fe/Pt] 16 multilayers were deposited on MgO (001) single-crystal substrates by magnetic sputtering at various substrate temperatures to explore the effect of annealing on the microstructures and the magnetic properties. Results show that the FePt alloy becomes ordered at about 300 °C and reaches a completely-ordered…
We study the critical temperature T c of the three-layered ferromagnet/superconductor (F/S) structures in the external magnetic field H parallel to the film. For the F1/S/F2 and F1/F2/S asymmetrical trilayers, the triplet superconducting component is generated at noncollinear magnetizations of the F layers. Assuming t…
This paper presents an analytical model for the study of magnetic vibrations in a permanent magnet synchronous motor. The analytical model is based, for the magnetic aspect, on the magnetically coupled circuits approach widely used for modeling electrical machines under faults. This approach associated with the windin…
Crystalline IGZO thin films were first used in consumer products successfully by a joint development with Sharp Corporation. The crystalline IGZO thin films have a CAAC (C-axis Aligned Crystal) structure, a novel crystalline structure without clear grain boundaries. We examined the mechanism of formation of the struct…
Harmonic analysis of repolarization in A 2 BX 4-group crystals in the ferroelectric phase near phase-transition temperature T c is used to separate the contributions to the harmonic-component amplitudes in the output signal of a Sawyer-Tower circuit from charging the reference capacitor with capacitive and conductive…
Single crystal tungsten samples with orientation (110) were irradiated in the Materials Irradiation Experiment with normal incidence 30 keV He+ at 900 aC. Samples were mechanically polished and then electropolished with a KOH solution before irradiation to 3×1017 to 6×1018 He+/cm2. With increasing fluence sample surfa…
Abstract The effect of Abelmoschus esculentus gum, known as okra, on potato and sweet potato starches pasting, rheological, and textural properties were studied using rapid visco analyzer, Brookfield rheometer, and texture analyzer, respectively. Blends of 5, 10, and 15% okra gum (OE) based on starch were prepared by…
Structural evolution and optical properties in blends of poly[2-methoxy,5-(20-ethylhexyloxy)-1,4,-phenylene-vinylene] and fullerene (C60) upon thermal treatment at different temperatures have been investigated using X-ray diffraction, absorption, and photoluminescence measurements. From the XRD results, the as-cast fi…
The chemical reaction near the crucible wall during directional solidification of Si crystals for solar cells has been investigated. Fragments of the crucible that were used for the crystal growth of a Si ingot were examined. As results, we found that a chemical reaction took place at the coating/crucible interface an…
The purpose of this research is to examine the physical property of the catheter, which made of soft nylon resin and is reinforced with thin stainless wires called braid. The effect of braid on the mechanical property of the catheter is revealed by investigating the relationship of the stress relaxation and the relati…
The structural features of the antiferromagnetic K0.8Fe1.6S2 have been studied in the temperature range from 300K up to 700K by means of in situ transmission electron microscopy (TEM). The superstructure with a wave vector q(1) = 1/5(3a* + b*) originating from a Fe-vacancy order has been clearly observed; moreover, th…
This paper proposes a novel scheme based on current signature analysis to estimate the severity of dynamic eccentricity fault independent of saturation in salient-pole synchronous machines (SPSM). The detection technique uses short circuit test data and exploits the presence of inherent static eccentricity in a machin…
The photoluminescence of process-induced tensile strained nanostructures fabricated using Ge on Si is reported. 100 nm pillars were etched and embedded in a silicon nitride thin film demonstrating photoluminescence emission up to ~2.5 μm.
Research results of the weld chemical composition and mechanical properties at pulsed arc welding are discussed. It is established that the pulsed power supply favours mechanical properties of the welded joint.
Cutting tooth especially due to the poor quality of the shearer brazing, caused great pick consumption and delayed hours. The tooth body wear of the whole shearer picks accounts for half of its overall failure. In this experiment, the cutting pick jiont which was welded by induction brazing was strengthened by plasma…