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In this paper a measurement setup is presented that enables automatic characterization of silicon piezoresistive MEMS pressure sensors. It is used for determination of the pressure and temperature dependences of sensor electrical parameters. Some of the equipment in the setup, and the software application that controls the process, are developed at the Center of Microelectronic Technologies (CMT)...
With their intrinsic superiorities such as high breakdown electric field and high thermal conductivity, SiC MOSFETs are replacing Si IGBTs in power electronics applications. However, at higher voltages SiC MOSFETs are at early stage of development and are not commercialized yet. For the first time, this paper presents thorough static and dynamic performance characterization of 3.3 kV and 30 A discrete...
Vertical GaN power semiconductors promise higher power with faster switching speeds but the development of this technology has been slowed. This is due to the expense and lack of familiarity with GaN substrates. This paper will detail the functionality of HRL's cutting-edge vertical GaN transistor which is mounted onto a specially made PCB and tested. The testing consists of a static characterization...
The ever-increasing complexity in power systems requires novel optimization and control tools. These tools must be validated prior to application to real power systems. Such validation requires access to a realistic, high fidelity power system network model. Fuel cost is an important element for such a model, but is often difficult to obtain due to confidentiality constraints. This paper advances...
Neodymium, cerium and lanthanum are commonly used critical rare earth elements in the last years. This study analyzes environmental impacts that may occur mainly from neodymium (Ne), cerium (Ce) and lanthanum (La) obtained from secondary sources, derived from the New Kankberg (Sweden) flotation tailings case study. The possibilities of extraction of Ne, Ce and La using magnetic separation can be reached...
As the Android app market keeps growing, there is a pressing need for automated tool supports to empower Android developers to produce quality apps with higher productivity. Yet existing tools for Android mostly aim at security and privacy protection, primarily targeting end users and security analysts. Towards filling this gap, we present DROIDFAX, a toolkit that targets the developers to help them...
This paper presents the characterization of frequency response and mode shape at the 1st harmonic frequency of a Micro-Opto-Mechanical Acoustic Sensors (MOMAS) with a Mach-Zehnder Interferometer (MZI) readout system. In previous research, the static modeling and characterization has been demonstrated. In this paper, we investigate the capability of using MOMAS in ultrasound domain as a Micro-Opto-Mechanical...
Electrical impedance characterization represents a practical way to evaluate the electro-mechanical parameters of Capacitive Micromachined Ultrasonic Transducers (CMUTs). This paper describes an accurate CMUT characterization method able to evaluate the electro-mechanical and parasitic parameters by fitting electrical impedance measurements at several bias voltages with an improved equivalent circuit...
In this paper preliminary results from investigations of the proof of concept of a nonlinear (vibrational) bistable inductive energy harvester are presented. The main idea proposed through this paper is to exploits the benefits of the snap-through buckling configuration in terms of capability to scavenge energy from wide band vibrations and the possibility to use the beam switching between its stable...
This paper addresses the problem of damage monitoring system for buried ductile steel pipeline subject to earthquakes. To determine the capacity of a pipeline to perform its mechanical functions face to occasional or incidental damages, such as earthquakes, it is needed to evaluate the structural integrity of pipe and to track relevant environment parameters. This may be performed through intelligent...
Nanoparticles have emerged as a major attraction for preparation of novel materials with unique properties. They are usually a combination of extraordinary materials not found in nature. Expanding on that concept, nanofibres with additional components for biomedical applications were fabricated. Magnetic nanoparticles were chosen because they exhibit super paramagnetic properties for a wide range...
The characterization of concentration modules based on Fresnel lens performed in outdoor conditions is presented. Two different types of high concentration photovoltaic modules with point focusing silicone on glass Fresnel lenses as optical concentration element are characterized in order to make a comparison between them. Main differences between the two modules are represented by the number of multijunction...
This paper deals with detection and analysis of hand activity recognition for rehabilitation purposes. The research attempts to analyze human hand movements analysis based that can aid medical institution in providing a better hand angle measurements for some identified movements. Three axis accelerometer sensors which are placed on particular positons on hand are used to observe the hand movements...
Formation of cracks is a major cause of damage in reinforced concrete (RC) structures which adversely affects the durability along-with appearance of structures. Hence, to understand the behavior of RC structural element under different stresses, it is necessary to obtain significant data describing the characteristics of fracture such as types of cracks, its propagation, failure pattern etc. which...
This paper reports for the first time the study of radiation effects on triple gate SOI tunnel FETs. In this work, devices with 1 μm width and three different channel lengths were exposed to a 600 keV proton radiation source and their current-voltage behavior was analyzed after 1 Mrad(Si) of accumulated total dose, comparing the results obtained before and after irradiation. It was possible to notice...
This paper presents a new deembedding method for transmission lines at millimeter waves and beyond in silicon integrated technology. The proposed method is called “Thru-Load” de-embedding which is a simplification from “Half-Thru” de-embedding. In this method the pad or pad interconnects parasitics are modeled into a simple “Half-Thru”. The simulated and measurement results are presented for the fabricated...
In this paper, we explore the pessimistic voltage guardbands of two multicore x86-64 microprocessor chips that belong to different microarchitectures (one ultra-low power and one high-performance microprocessor), when programs are executed on individual cores of the CPU chips. We also examine the energy and temperature gains as positive effects of lowering the voltage in both chips while preserving...
Understanding the behavior and fate of engineered nanomaterials (ENMs) released to the environment requires measurement of their physicochemical properties in relevant media. Specialized instrumentation is required to be able to detect their changes in physicochemical characteristics (such as agglomeration and dissolution) as ENMs move from the manufactured state to the exposure pathway and ultimately...
Zinc oxide (ZnO) nano-polycrystalline thin film has been synthesized by microwave-assisted successive ionic layer adsorption and reaction (mSILAR) technique. The prepared samples were annealed in air and an inert atmosphere. X-ray diffraction (XRD) studies confirm the presence of hexagonal wurtzite ZnO structure in both synthesized films. The field emission scanning electron microscope (FESEM) revealed...
Global Navigation Satellite Systems — Reflectometry (GNSS-R) has opened promising results for remote sensing applications. The broadcast of new signals with wider bandwidth provides an opportunity to increase the performance of GNSS reflectometry applications. The Microwave Interferometric Reflectometer (MIR) is an instrument being developed to compare different GNSS-R techniques, namely the conventional...
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