Nonuniform electric fields
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2021 IEEE Photovoltaic Specialists Conference (PVSC)
Photovoltaic materials, devices, systems and related science and technology
The Pulsed Power Conference is held on a biannual basis and serves as the principal forum forthe exchange of information on pulsed power technology and engineering.
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.
The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
IEEE Design & Test of Computers offers original works describing the methods used to design and test electronic product hardware and supportive software. The magazine focuses on current and near-future practice, and includes tutorials, how-to articles, and real-world case studies. Topics include IC/module design, low-power design, electronic design automation, design/test verification, practical technology, and standards. IEEE Design & Test of ...
IEEE Conference Record - Abstracts. 1992 IEEE International Conference on Plasma, 1993
Radio Science, 2002
The characteristics of random ionospheric inhomogeneities are described, including their dependency on the geophysical parameters. They are used in a propagation model to estimate the propagation errors and the fades of the transmitted signals. Margins to be included in a budget link are subsequently determined. Features of our propagation model, Global Ionospheric Propagation Model (GIM), are presented with typical results ...
IEEE Transactions on Industry Applications, 1997
We have demonstrated that, in general, the dielectrophoretic (DEP) force experienced by a particle has two components. The first depends upon inhomogeneities in the applied electrical field strength and upon the in-phase part of the resultant dipole moment induced in the particle and can be identified with the conventional dielectrophoretic (cDEP) force. The second relates to nonuniformities in the phase ...
2010 Abstracts IEEE International Conference on Plasma Science, 2010
In this paper we investigate the effects of a nonuniform electric field on free standing air bubbles in water. An air pump is used to launch bubbles into a water filled glass tube where they pass between electrodes arranged in a wire-plane geometry. An electric field is applied between the electrodes by a 20 kV AC power supply and the ...
IEEE Transactions on Plasma Science, 1999
We have studied the guiding discharge path in a weakly ionized region between plasmas produced by a visible laser, that is, a YAG laser with wavelength /spl lambda/=532 nm, in an air gap with DC nonuniform electric field using a rod- to-plate electrode. We succeeded in capturing the framing images in the temporal evolution on guiding discharge along the YAG ...
A CMOS Qubit: Quantum & Probabilistic Computing - Mark Sanquer at INC 2019
International Electric Vehicle Conference 2012
The R&D History of On-Line Electric Vehicles (OLEV)
Magneto-electric Approximate Computation for Bayesian Inference - IEEE Rebooting Computing 2017
APEC 2015: KeyTalks - More Electric Aircraft Challenges
Fuel Cell Powertrain for Hybrid Electric Vehicles for Postal Delivery
Electric Ship Technologies Symposium (Member Access)
State-of-the-art Electrical Machines for Hybrid Electric Vehicles
A Decade of Electric/Hybrid Vehicles Design and Development at UTBM
Part 1: Transforming the Electric Utility Industry with a Smart Grid: IEEE TAB Speakers Bureau
Asynchronous Design for New Device Development - Laurent Fesquet at INC 2019
Transportation Electrification: Zero Emission Electric Veichles
Defense Department's Crusher Field Demonstration
IEEE Milestone S&C Electric company
Owning a Tesla, Going Electric - IEEE Southern Minnesota presentation
A Global Engineering Challenge
Magnetic Materials and Magnetic Devices - Josep Fontcuberta: IEEE Magnetics Distinguished Lecture 2016
Zero Emission Powertrains and Fuel Cell Engines: APEC 2019
Neuropriming: What Are The Ethical Implications? - IEEE TechEthics Virtual Panel
The characteristics of random ionospheric inhomogeneities are described, including their dependency on the geophysical parameters. They are used in a propagation model to estimate the propagation errors and the fades of the transmitted signals. Margins to be included in a budget link are subsequently determined. Features of our propagation model, Global Ionospheric Propagation Model (GIM), are presented with typical results for VHF and L band links.
We have demonstrated that, in general, the dielectrophoretic (DEP) force experienced by a particle has two components. The first depends upon inhomogeneities in the applied electrical field strength and upon the in-phase part of the resultant dipole moment induced in the particle and can be identified with the conventional dielectrophoretic (cDEP) force. The second relates to nonuniformities in the phase distribution of the applied field and to the out-of-phase part of the induced dipole moment. A nonuniform phase distribution corresponds to a field that travels through space. This second force component gives rise to traveling-wave dielectrophoresis (twDEP). In this paper, we describe several electrode configurations designed to produce electric fields capable of inducing cDEP and twDEP forces for the purpose of manipulating particles. Using DS19 Friend murine erythroleukemia cells as test particles having well-characterized dielectric properties, we investigated the electrokinetic behaviors for these electrodes as a function of frequency and electrode excitation mode. Several characteristic cell electrokinetic behaviors were identified, including trapping, linear motion, levitation, and circulation of the cells, depending on the excitation characteristics of the electrodes and the cell dielectric properties. We describe these findings and rationalize them in terms of the field distributions produced by the electrodes, the particle dielectric properties, and generalized dielectrophoresis theory. The biotechnological applications of dielectrophoretic manipulation are then discussed.
In this paper we investigate the effects of a nonuniform electric field on free standing air bubbles in water. An air pump is used to launch bubbles into a water filled glass tube where they pass between electrodes arranged in a wire-plane geometry. An electric field is applied between the electrodes by a 20 kV AC power supply and the response of the bubble is captured using a high speed camera (10,000 fps). Due to the large difference between the dielectric constants of water and air, the electric fields in the electrode gap will be refracted and focused to the region inside or near the bubble surface. This concentrated field strength will tend to polarize the bubble surface and subject the bubble to a dielectrophoretic force, which may result in a deformation of the bubble's shape. If the electric field is further driven at the natural oscillation frequency of the bubble (0.1-1.0 kHz), the dielectrophoretic force may severely modify both the gas dynamic and dielectric properties inside the bubble. The goal of this work is to investigate these physical processes for the case of a single bubble that is physically separated from all electrode surfaces. A better understanding of these effects could be used to facilitate the process of plasma breakdown in water.
We have studied the guiding discharge path in a weakly ionized region between plasmas produced by a visible laser, that is, a YAG laser with wavelength /spl lambda/=532 nm, in an air gap with DC nonuniform electric field using a rod- to-plate electrode. We succeeded in capturing the framing images in the temporal evolution on guiding discharge along the YAG laser light path. From the results of experiments, the region between two plasmas produced by a YAG laser can guide a discharge path, and the region between two plasmas on the laser light path is considered, as well as a weakly ionized one produced by an excimer laser.
The local field set up by the inhomogeneities present in the dielectric matrix of power cable insulation is examined. A pure polymeric matrix is considered in AC regime, and the real local field set up by the presence of fillers or impurities is calculated by using a suitable mathematical model. On the hypothesis that the AC breakdown stress is closely related to the local electric field, the model is checked against some experimental data taken from the literature. Various types of inclusions are considered: inert fillers composed of dielectric particles of different shapes; voids (filled with water); trees; and metallic inclusions. The hypothesis of dependence on the dielectric strength on volume indicates that it is important to limit not only the dimensions of the inhomogeneities but also and especially their concentration. Therefore it is not sufficient to use filters to limit the dimension of impurities; it is also necessary to limit the number of impurities.<<ETX>>
This study presents the design, simulation, fabrication and measurement of a microfluidic chip with micro cylindrical post array for separating particles. The structure of microfluidic chip is consisted of top glass, a micro channel with cylindrical post array, two Au end electrodes and bottom glass. Both in- line and staggered arrays of micro cylindrical posts were designed and made of SU-8 inside the micro channel by MEMS technology. The simulated results showed that the applied DC voltage at the end electrodes would generate a non-uniform electric field within the array of cylindrical posts, and particles would be attracted there. From the results of experiment, the minimum required DC voltages to drive micro particles flowing into the micro channel by electrokinetic effect were 15V and 30V, respectively, at the electrode spacing of 8mm and 25mm for both array types. Under the dielectrophoretic effect created by the non-uniform electric field, the latex particles could be concentrated around micro cylindrical posts with electric field intensity minima and separated from flowing fluid. This phenomenon is in agreement with the simulation.
A novel driving theory on the induction type electrohydrodynamic (EHD) pump driven by traveling electric fields without the temperature gradient is proposed. The micro EHD pump is fabricated by micromaching technology and experimented. We derive the equations of the generating pressure and the flow rate, and discuss the theoretical and the experimental results. The experimental results are consistent with the results of the proposed theory in this paper.
This paper presents a new type of micromotor using electro-conjugate fluid (ECF). An electro-conjugate fluid is a kind of dielectric fluid, which works as a smart fluid. The fluid generates a powerful jet flow, which we call an ECF jet, when subjected to high DC voltage with highly non-uniform electric field, which means, it works as a fluid power source for mechanical components without bulky pumps. We introduce this attractive smart fluid to micromotors in this paper. Inside the motor is filled with the electro-conjugate fluid and a rotor has electrode pairs on the surface. By applying high DC voltage to the electrode pairs, the rotor rotates due to the ECF jet. In this paper, we design several types of electrode pairs and examine each influence on motor performances.
Compares experimental measurements of the electroinsulation properties of a vacuum insulation system with those of the same system filled with SF/sub 6/. The influence of the following factors of the condition of the two insulation systems on the electron strength at AC voltage was examined: conditioning, kind of electrode material, level of pressure, the degree of nonuniformity of macroscopic and microscopic electric fields, and temperature. The results of the experiments seem to indicate that the higher the degree of nonuniformity of the macroscopic electric field and the lower the temperature, the more justified is the use of vacuum insulation.<<ETX>>
Develop safety levels for human exposure to electromagnetic fields from 0 to 3kHz. This standard will be based on the results of an evaluation of the relevant scientific literature and proven effects which are well established and for which thresholds of reaction are understood. Field limits will be derived from threshold current densities or internal electric fields.