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Showing 1 to 20 of 21 for “"Dielectric Strength"”.
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Electrical Properties of Nitride/oxide Multilayered Thin Films
… roughness was not a factor for the increased dielectric strength of the multilayered films. There were no observed dielectric strength increase for the nitride/nitride, oxide/oxide multilayered films.
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A non-destructive transformer oil tester
A new non-destructive test of transformer oil dielectric strength is a promising technique to automate and make more reliable a diagnostic that presently involves intensive manual efforts. This thesis focuses some of the issues that must be understood to bring the test from the laboratory to the …
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Thermal Stability of Al₂O₃/Silicone Composites as High-Temperature Encapsulants
… types of package structure and exhibit excellent dielectric performance in a wide temperature range (25 - 250°C) but are insufficiently stable against long-term aging (used by some manufacturers, e.g., P²SI, to evaluate polymer stability) at 250°C. These materials cracked during aging, causing …
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Electrical Breakdown of Thermal Spray Alumina Ceramic Applied to AlSiC Baseplates Used in Power Module Packaging
… basically causes the coatings to have a lower dielectric breakdown voltage and a higher leakage current at normal operating voltages. This problem can be eliminated by manufacturing the electronic power modules in a controlled environment and packaging the devices in a hermetically sealed …
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Calculation of Electron Collision Cross Sections in Fluorinated Nitrile (C4F7N) and its Dissociation Fragments
… years as an insulating gas due to its higher dielectric strength and low global warming potential relative to SF6. To evaluate the behavior of this novel gas during high-voltage gaseous discharges, plasma models require electron-neutral collision cross sections to calculate parameters such as …
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DESIGN AND FABRICATION OF METAL-POLYMER BASED CORE-SHELL ARTIFICIAL NANODIELECTRICS FOR CAPACITOR APPLICATIONS
… The permittivity of the polymer as well as its dielectric strength can be tuned to desired characteristics by introducing either ceramic or metal nano fillers. Usage of ceramic fillers would need higher loading, leading to less flexibility and compatibility with printed circuit boards. Thus …
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Thin Film Polymer Dielectrics for High-Voltage Applications under Severe Environments
… into the performance of advanced polymer dielectrics for the realization of high-power electronic circuits in a miniature form. These polymeric materials must satisfy a number of critical thermal, environmental, and electrical requirements to meet the required performance criteria for …
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PU elastomers and grafted GO/PU nanocomposite with self-healing and self-adapting capabilities for next-generation electrical insulation
The demand for next-generation dielectric materials with substantially improved reliability is spurred by the development of global energy industry, where extremely harsh operating environment for electrical and electronic materials and increasingly complex insulation system are present. In order …
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Electric field and space charge characteristics of xlpe insulation doped with nanofillers
… particles is well acknowledged in enhancing the dielectric strength in insulation material. The remained unanswered that is concerning the nanometre-sizes in maximising the potential of nanocomposite insulator. The main criteria to dictate the dielectric performance is by measuring the level of …
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Computer Simulation of Biological Ion Channels
… of Poisson's equation in the presence of a dielectric boundary and multiple point charges. These algorithms are then used to perform Brownian dynamics simulations on realistic models of biological ion channels. An iterative method of solution, in which the dielectric boundary is tiled with …
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Computer Simulation of Biological Ion Channels
… of Poisson's equation in the presence of a dielectric boundary and multiple point charges. These algorithms are then used to perform Brownian dynamics simulations on realistic models of biological ion channels. An iterative method of solution, in which the dielectric boundary is tiled with …
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A Study Of Structure-Property Correlation In V2o5 And Tio2 Based Thin Films As Functional Materials
… for lithium ion battery and TiO2 as a high-K dielectric material. </p> <p>We studied V2O5 thin films prepared by spin coating using three different types of precursors, MOD precursor, sol-gel organic precursor and sol-gel inorganic precursor. On the basis of structural and electrochemical …
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Switching mechanisms, electrical characterisation and fabrication of nanoparticle based non-volatile polymer memory devices.
… those in silicon dioxide insulating films. The dielectric breakdown strength of the films was found to be significantly higher than bulk material testing would suggest, with a maximum dielectric strength of 4.7 MV•cm-1 found, compared with the manufacturers bulk value of 0.2 – 0.8 MV•cm-1. …
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Innovative Design Concepts for Insulated Joints
… for accommodating track signals. The mechanical strength is needed to ensure the rail and IJs are able to withstand the vertical, longitudinal, and lateral forces that commonly occur on track. Insulating materials that can replace the epoxy used in bonded insulated joints are researched. The …
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A study on the material and device characteristics of hafnium oxynitride MOSFETs with TaN gate electrodes
… have been under intense investigation for gate dielectric application into the 70 nm technology nodes and beyond to replace conventional SiO2 or oxynitrides since it possesses a dielectric constant of 22 – 25, a large band gap of 5.6 eV with sufficient band offsets of larger than 1.5 eV, and is …
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Preparation and investigation of polymer-foam films and polymer-layer systems for ferroelectrets
… of PEN foams. The light emission from the dielectric-barrier discharges (DBDs) can be clearly observed. Corona charging in a gas of high dielectric strength such as sulfur hexafluoride (SF6) results in higher gas-breakdown strength in the voids and therefore increases the piezoelectricity. …
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Integration Challenges In High Power Density Wide Bandgap Based Circuits for Transportation Applications
… to overheated and the latter degrades insulation strength, both of which hinder high power density design. Moreover, with the advent of all kinds of portable devices, converters are required to deliver more power. The introduction of universal serial bus (USB) power delivery (PD) extends the …
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Performance Optimisation of Dielectric Elastomer Generators
A Dielectric Elastomer Generator (DEG) is an electromechanical transducer, basically a highly deformable parallel-plate capacitor, made up of a soft DE membrane coated with two compliant electrodes on its opposite surfaces. This device is able to convert mechanical work, emanating from its …
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