Materials Literature
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Graphene is a wonderful material with outstanding properties which is ideal for micro-electro-mechanical systems (MEMS) and also nano-electro-mechanical systems (NEMS) like sensors and switches including strain gauges, mass and force sensors. Graphene is single atom thick layer of graphite which consists of carbon ato…
Effect of high pressure hydrogen annealing on polysilicon thin film transistors has been evaluated using a novel acquisition setup and analysis of deep trap states. Trap density was extracted with high resolution of density and energy level. Trap density was reduced by one order of magnitude after annealing. Passivati…
Pulsed X-ray Induced Partial Discharge (PXIPD) is a technique to test the quality of insulation materials by making use of the generation of start electrons through X-ray irradiation of the material. These start electrons accelerate the time needed for the generation of partial discharges within voids. An important qu…
This paper presents an investigation of the dielectric properties of two environmental friendly cooling fluids, hydrofluoroethers and fluorinated ketone. The AC and DC dielectric response of both cooling fluids have been measured at different temperatures. The experimental results indicate that temperature is positive…
Addition of metal inhibitor to corrosive transformer oil was employed to prevent the formation of semi-conductive Cu2S on copper surface. The formation of impermeable layer is the key process, however, little attention were paid on this process. Here, we performed aging experiment with benzotriazole and benzimidazole…
Summary form only given. High-voltage arc formation near a dielectric material is a complex process by which surface charging, secondary electron emission, and photoelectron emission modify the local electric field to determine the arc path and breakdown threshold. Strong electric field enhancement at the triple-point…
Despite robust in construction, a certain number of distribution transformers inevitably fail. This paper investigates on diagnostic condition of three phase distribution class transformers located onsite. Six transformers of different in-service time are chosen and subjected to diagnostic experiments. The information…
Huang and Wu proposed a new network which is called balanced hypercube, the balanced hypercube is a variant of the hypercube network. As a crucial factor to evaluate the performance of the interconnection networks, fault tolerance of the interconnection networks has been widely studied in recent years. Hence, it is na…
The turn insulation of multiturn coils is often involved in machine failures. Until now, there has been no type test for detecting the long-term performance of turn insulation. The purpose of this study is to establish an aging test that will sufficiently stress the turn insulation, in order to evaluate and compare th…
Spin-Torque Nano-Oscillators (STNO) are of great research interest due to their compactness and scalability, GHz operation, frequency tunability, and integrability in existing CMOS process flow [1]. However, they have some short-comings that prevents commercial uptake. These are, broadly, the need of an external magne…
The performance and efficiency of power devices depends on both high breakdown voltage and low on-state resistance. For semiconductor devices, the critical electric field (EC) affecting breakdown scales approximately as Eg25[1], making the wide bandgap semiconductor materials logical candidates for high voltage power…
Contact resistance is a dominant factor in the performance of field-effect transistors (FETs) from two-dimensional MoS2. Several techniques have been shown to improve carrier transport at the metal-MoS2interface, thus lowering the contact resistance. These approaches include the use of molecular doping, different cont…
This paper presents a cooperating converter that interfaces a Low-Voltage Energy Storage System with the electrical grid. In this paper, Low-Voltage is consider a voltage that is much lower than the minimum DC voltage required for controlling properly the current of the grid connected inverter. Energy Storage Systems…
This paper introduces a model of magnetostriction based on minimization of total energy. An identification of each term from measurements of the magnetization and magnetostriction is presented, assumptions supporting the model are mentioned. To validate the proposed model, a comparison between experiments - on FeSi si…
In this paper, the impedance characteristic profiles of wooden power poles altering the leakage current from high voltage (HV) insulators are investigated to better understand the role of wood in leakage current signatures. A comparison with past research shows the capacitive components of a pole's impedance have prev…
Low-cost and facile approach to grow quasi-one-dimensional hexagonal tungsten trioxide nanobundles (Q1D hex-WO3NBs) on indium tin oxide (ITO) coated flexible polyethylene terephthalate (PET) substrate via hydrothermal method combined with electrophoretic deposition (EPD) technique is reported. Influence of the precurs…
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The paper is devoted to developed passive technique for remote monitoring of increased radioactivity in the atmospheric emission. Characteristics of present methods for detection of radioactivity in the atmosphere are discussed. The block diagram of receiver and engineering of microwave radiometer are presented. Radia…
Owing to the large bandgap, breakdown electric field (Eb) and high carrier mobility, wide-bandgap semiconductor (e.g. SiC and GaN) based power devices have been extensively studied for next-generation power-switching applications [1-2]. Recently, a new wide-bandgap oxide semiconductor, gallium oxide (β-Ga2O3), has att…
The study presents the results of experimental investigation of finding out the limit concentrations of DBDS and sulfur mercaptan for safe and prolonged operation of power transformers in the local environmental conditions of Saudi Arabia. For experimental investigation of limit concentrations of DBDS and sulfur merca…