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The purpose of this study was to provide a low cost manufacturing solution for Silicon Trench based Schottky rectifiers utilizing NiPt alloy composition that produces multiple barrier heights and provide designers the option to easily adjust the barrier height (BH) for rectifier designs. Higher temperatures needed to obtain larger barrier heights are generally unfavorable for trench-based Schottky...
In this paper, simulation result of MEMS based micro-hotplate using the finite element method (FEM) has been presented. FEM subdivides a large problem into smaller, simpler parts, called finite elements. The electro-thermo-mechanical behaviors of micro-hotplates have been simulated using INTELLISUITE 8.2.2 software. A composite membrane (SiO2/Si3N4) was used in this case in order to obtain a stress...
Based on the micro electronic mechanical system (MEMS) processing, a large size 2-D scanning mirror driven by electromagnetic force was designed and implemented in this paper. Here we fabricated micromirror with the silicon wafer and electroplated soft Ni film on the backside of mirror. The no-coil structural micro-mirror prevented heat produced on the mirror effectively. The scanning resonant frequency...
Modern wind energy systems require power electronic converters to control its rotational speed in order to extract the maximum power from the wind. These converters can provide additional services if they are properly controlled. This paper presents a strategy for wind energy systems which simultaneously allows compensation of reactive power, negative sequence voltages and harmonics currents. This...
The article deals with the influence of the magnetic impurities on magnetoresistance of silicon whiskers. The features of transition of the metal impurities (nickel) in silicon crystals are investigated. It is shown that the interaction between nickel impurities and the crystal lattice of silicon promotes the formation of magnetic conglomerates on the surface of the crystal. The polarized conglomerates...
We report a new fabrication technology to form capacitive sense/drive electrodes with large area and narrow, uniform, and controllable gaps around a three-dimensional (3D) micro shell resonator. The process utilizes electroplated photoresist (EP) to form a conformal sacrificial layer on the 3D shell and electroplated metal (EM) to grow drive/sense electrodes towards the resonator until they touch...
This paper presents the characteristics and control structure of a high power three-port bidirectional DC-DC converter (TPBC) based on full bridge and interleaved-boost converters (IBC) with pulse-width-modulation and phase-shift control for photovoltaic-storage hybrid systems to integrate to MVDC distribution system. The FB-TPBC, featuring one input port, one bidirectional port and one isolated bidirectional...
Through glass vias (TGVs) are a key component in glass-based interposers and microelectromechanical-system lid wafers. Magnetic-field-assisted self-assembly has been demonstrated earlier in fabrication of through silicon vias. Here we present an entirely maskless TGV fabrication process utilizing magnetic assembly. Femtosecond laser is used for ablative direct patterning of surface metal layers and...
A wide array of research has been conducted in the processing of nanocomposites, thus, designing and fabricating new nanocomposites for enhancing electrical and magnetic products have always been challenges. In this paper, it has been studied the prediction of effective permeability of new nanocomposites magnetic materials based on theoretical approaches at terahertz frequencies to exhibit weak electric...
In the internet banking environment, using credit cards to pay the services is one of the most popular and simplest methods. However, this is dangerous if users information or smart-card is stolen. With a non-stop development of mobile and wearable devices, user authentication scheme which is security and low-resource efficient is a subject of interest. Modern devices help securing login phase by...
In this paper, we describe an advanced real-time cancellation architecture for efficient digital-domain suppression of self-interference in inband full-duplex devices. The digital canceller takes into account the nonlinear distortion produced by the transmitter power amplifier, and is thereby a robust solution for low-cost implementations. The developed real-time digital canceller implementation is...
Giving consideration to the bidirectional uncertainty of wind power output and load, in order to improve the accuracy of reactive power optimization of asset allocation, the paper combines the wind power output scenario with complete-bus load clustering method in distribution network, and establishes the selection model of system operation scenario. This method can accurately select the system operation...
This review demonstrates the potential of low frequency noise diagnostics for the characterization of Ge-based and III–V technologies processed on a Si platform. The analysis of traps in both gate dielectrics and semiconductor films is illustrated for state-of-the-art devices.
The application of plastic core solder balls (PCSB) for the assembly of a silicon (Si) interposer die inside a ceramic package has been evaluated for a harsh application. Three different variants of assembly were compared. All variants survived the performed thermal shock cycling and centrifugation. Failures observed after thermal shock cycling indicated a reduced risk of crack formation for Ag-rich...
Networked control systems (NCSs) are vulnerable to the cyber-threats of computer viruses. The cyberattacks on NCSs must intensively influence physical processes such as the safety-critical nuclear plants, through feedback actuation. To keep the cybersecurity to design proper anti-virus scheme, it is necessary to study the virus spreading dynamics on NCSs. In this paper, the virus spreading is modeled...
The admission control unit proposed by the standard IEEE 802.11e admits traffic streams (TSs) according to their traffic specifications (TSPECs). It allocates transmission opportunities (TXOPs) to TSs based on mean data rate and minimum physical rate. The reference admission control fails to adopt to fluctuations in physical channel condition. In this paper, we present an adaptive admission control...
Social influence in online social networks bears resemblance to epidemic spread in networks and has been studied through epidemiological models. The epidemic threshold is a fundamental metric used to evaluate epidemic spread in networks. Previous work has shown that the epidemic threshold of a network is exactly the inverse of the largest eigenvalue of its adjacency matrix. In this work, however,...
In this paper, there is an attempt to give a simple and efficient solution to the problem of singer identification in Indian Hindi songs using audio samples. The experiment is done using five well known singers. This work uses MFCC and some spectral features which are extracted for each audio sample taken of size 2 seconds. After a set of pre-processing steps, supervised training is done using multilayer...
Angular motion tracking of a link mechanism has been accomplished through a high-power linear actuation with multiple nonlinearities in an electrohydraulic system. For achieving precise control regardless of wide variations in demands and disturbances, an adaptive PID controller has been formulated. The convergence of the controller has been established by suitable Lyapunov function definition. Real-time...
Silicon heterojunction solar cells have been the subject of growing research interest. Such cells replace the typical p+nn+ or n+pp+ structure of standard devices with selective heterojunction contacts, which block one type of carrier while allowing the other to pass freely (Fig. 1) [1-3]. Previously [4], we demonstrated a PEDOT/n-Si/TiO2 heterojunction cell fabricated below 100°C with no p-n junctions...
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