Search for dissertations about: "intrinsic charge"
Showing result 1 - 5 of 90 swedish dissertations containing the words intrinsic charge.
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1. Charge transport in polymer-based insulating materials for high voltage applications: effect of single- and multi-layered structures
Abstract : Polymer composites have been widely employed as electrical insulating materials for high voltage components and devices such as power cables, gas-insulated systems, rotating machines, line and post insulators, etc. Such materials are usually made by introducing inorganic oxides (SiO2, TiO2, Al2O3, MgO) into polymeric matrices e.g. READ MORE
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2. Modeling and characterization of novel MOS devices
Abstract : Challenges with integrating high-κ gate dielectric,retrograde Si1-xGexchannel and silicided contacts in future CMOStechnologies are investigated experimentally and theoreticallyin this thesis. ρMOSFETs with either Si or strained Si1-xGex surface-channel and different high-κgate dielectric are examined. READ MORE
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3. High-frequency phenomena in small Bi2Sr2CaCu2O8+x intrinsic Josephson junctions
Abstract : In this thesis, the tunneling between individual atomic layers in structures of Bi2Sr2CaCu2O8+x based high-temperature superconductors are experimentally studied employing the intrinsic Josephson effect. A special attention is paid to the fabrication of small mesa structures using micro and nanofabrication techniques. READ MORE
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4. Unraveling the cuprate superconductor phase diagram : Intrinsic tunneling spectroscopy and electrical doping
Abstract : High-temperature superconductors belong to the group of strongly correlated materials. In these compounds, complex repulsive electron interactions and a large number of degrees of freedom lead to a rich variety of states of matter. READ MORE
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5. Electrical Characterization of Partial Discharge Resistant Enamel Insulation
Abstract : Adjustable speed drives for rotating machines have become increasingly popular as they provide possibilities of smooth and accurate process control as well as for energy savings. In such systems, due to the fact that the voltage applied at terminals of motor windings is no longer purely sinusoidal but characterized by a high content of harmonics, the appearing electrical and thermal stresses yield premature failures of the winding insulation, mainly because of an increased partial discharge (PD) activity. READ MORE