Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 46 for “"Electric properties"”.
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Magnetic and electric properties of bismuth ferrite lead titanate ceramics
… solutions of multiferroic BiFeO3 doped with ferroelectric PbTiO3 (BFPT) can be prepared by conventional mixed oxide processing to produce a range of polycrystalline ceramics ranging throughout the xBiFeO3 - (1-x)PbTiO3 series. Sintered ceramics are shown to exhibit mixed tetragonal (P4mm) and …
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Designing devices using electro-active yield stress fluids
Understanding the rheo-electrical properties of electro-active yield stress fluids (EAYS) lies at the heart of enabling the design of a number of novel applications such as smart valves and semi-solid flow batteries. This thesis explores the rheological and electrical properties of EAYS fluids, …
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Interfacial Segregation in Perovskites and Applications to Boundary Layer Devices
… and also plays an active role in modifying the properties of many materials. For example, surface segregation in single crystals may change the surface scattering of carriers, and electron emission characteristics. In polycrystalline materials, segregation of defects to grain boundaries may …
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Bismuto mangano oksido ir giminingos keramikos dielektriniai tyrimai /
… the creation of innovative technologies. The dielectric and electric properties of BiMnO3 and (Bi0.06Na0.94)(Mn0.04Nb0.96)O3 ceramics were studied in this work. Complex dielectric permittivity was measured of BiMnO3 in temperatures ranging from 140 K to 500 K and in frequencies from 20 Hz up to …
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Some electrical properties of semi-conductor crystals / |nPhyu Phyu Khin. -- 260 St. Catharines, Ont. : [s. n.],
… As the crystals obtained were small for electrical measurements, hot pressed lumps have been used to measure their resistivity.
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Design, fabrication and characterisation of free-standing thick-film piezoelectric cantilevers for energy harvesting
… for converting mechanical vibration to electrical energy is the use of piezoelectric materials, typically operating as a cantilever in a bending mode, which generate a voltage across the electrodes when they are stressed. Traditionally, the piezoelectric materials are deposited on a …
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Characterization of MnZn ferrite materials and finite element method for MnZn ferrite core loss calculations
… property data (the complex permeability, the dielectric constant, and the AC conductivity) measured in the laboratory. Due to the lack of published material data and fundamental test procedures, this work also demonstrates the measurement techniques of material data which are necessary for the …
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Exploiting Clausius-Mossotti Factor to Isolate Stages of Human Breast Cancer Cells: Theory and Experiment
… it is expected that their dielectrophoretic properties are also unique. DEP force is dependent on the frequency and magnitude of the applied field, as well as a particle's size and electric properties. Specifically, the Clausius-Mossotti factor in the DEP force equation determines a specific …
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Mangano oksidu praturtintų PMN-PT keramikų gamyba ir dielektrinis charakterizavimas /
… their microstructure, electrocaloric and dielectric properties. The electrocaloric (EC) effect, a reversible and adiabatic temperature change induced in a polar material by an external electric field, could be utilized in refrigeration as a substitute for conventionally employed …
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Drift Mobility Measurements and Electrical Characterization in Thin Film Cadmium Telluride Solar Cells
… industry for the recent few years. The electric properties and mechanism for fabrication of high efficiency solar cells are still not well established. In this thesis, I’ll report electron and hole drift mobilities measurements in thin film CdTe solar cells based on two characterization …
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Substrate-mediated modulations of graphene’s electronic properties
… to support graphene can dramatically alter its electrical and mechanical properties. In this thesis we investigate the interactions between graphene and three distinct types of substrate. First we consider graphene on flexible substrates and the interaction between the strain induced by the …
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Investigation of the stability of short arcs
… response. Most of the work on arc quenching and electric properties of wood was done by Darveniza [1]. Various developed arc-quenching techniques are highlighted in this document. The arc behaviour is then discussed without going into the details of plasma physics. The general characteristics and …
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Technology and applications of 2D materials in micro- and macroscale electronics
… of atomically thin materials with a variety of electric properties, are promising for such electronic systems with extreme dimension due to their flexibility and ease of integration. On the macroscopic side, electronics produced on thin films by roll-to-roll fabrication has great potential due …
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Voltammetric and other properties of methylmercury compounds and distribution of methylmercury in environmental samples
<p>The reduction of aqueous methylmercury solutions has been studied using polarography and cyclic voltammetry at the dropping mercury electrode. By scanning a broad range of pH, pCl and methylmercury concentrations, a detailed reduction mechanism has been proposed. Reduction is shown to proceed in …
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A Feasible Method to Evaluate RF-Induced Heating Behavior of Passive Orthopedic Implants in Human Body
… each orthopedic implant. The effect of medium electric properties on the incident electric field distribution inside phantom structure are investigated. And local low lossy medium is added to mimic the effect of human bone tissue on RF-induced heating. Based on these results and analysis, a new …
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Processing and Physical Functionality of Multicomponent High Entropy Materials
… could give rise to unusual and often outstanding properties, such as excellent mechanical properties, electric properties, and magnetic properties, making them promising for applications in electric devices, semiconductors, engines, hard disks, and sensors. This study aims to synthesize high …
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