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 29 for “"Electric currents"”.
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Nonlinear ion transport at high electric currents in shock electrodialysis and ion-intercalation memories
… studies the nonlinear ion transport at high electric currents, in two applications: shock electrodialysis (shock ED) for ion separation, and ion-intercalation memories for in-memory computing. The two studies are both related to the concept of concentration polarization (CP) in …
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Molecular dynamics simulations of metallic friction and of its dependence on electric currents: development and first results
… with velocity. The study of the effects of currents on our system required the development of a suitable electrodynamic (ED) solver, as the disparity of MD and ED time scales threatened the efficiency of our code. Our first simulations combining ED and MD are presented.
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The Biologically Effective Electric Current Distribution in Rana Pipiens Eggs Resulting From Applied Circularly Polarized Electric Currents
Made available in DSpace on 2014-12-05T22:14:33Z (GMT). No. of bitstreams: 1 0009150.pdf: 7946644 bytes, checksum: c7c90b9102778bd128c82c762a1f3a4b (MD5) Previous issue date: 1954
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Development and Validation of a Bidirectionally Coupled Magnetoelastic FEM Model for Current Driven Magnetostrictive Devices
… model (BCMEM) has been extended to include electric currents in its magnetic finite element formulation. This enables the model to capture the magnetoelastic behavior of magnetostrictive materials subjected to elastic stresses and magnetic fields applied not only by permanent magnets but …
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Radar observations of field-aligned plasma propagations associated with NASA's PMG experiment
… of hollow cathode plasma sources to couple electric currents from an electrodynamic tether into the ambient ionospheric plasma. This large-scale coupling process resulted in turbulent plasma signatures associated with the orbiting plasma generator, which propagated over great distances along …
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Passive and Thermo-Optic Characterization of Long-Range Surface Plasmon-Polariton Structures in CYTOP
… is necessary. In thermo-optic measurements, electric currents were injected heating the waveguides and changing the refractive index of the claddings. Electromigration were characterized and the conclusion was that the waveguides can work under the current density 70GA/m2. Mode extinction …
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Modal analysis of radiation and energy storage mechanisms on conducting scatterers
… manifestation of radiation and stored energy by electric currents on conducting bodies is studied via modal expansions. The novel modal expansions are based on the quadratic operators which map a current distribution to each quantity. Adaptations of the continuous forms of these operators into …
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Investigation of nanoscale thermal radiation : theory and experiments
… radiation to temperature induced fluctuations of electric currents, it becomes possible to capture the nanaoscale effects that differrentiate it from classical blackbody radiation. This work is focused on two aspects of nanoscale thermal radiation - the ability to tailor the emissive properties …
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The application of the self potential profiling method in the delineation of buried geothermal reservoirs
… physical boundaries where coupling exists, electric currents are generated which can be measured at the surface. Field work was carried out over shallow oil reservoirs undergoing thermal recovery projects, representing artificial geothermal reservoirs. By profiling self-potential …
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Do somatosensory oscillations relate to tactile attention? Extracting the phase of transcranial Alternating Current Stimulation (tACS) during stimulus presentation.
… method that involves the application of weak electric currents to the scalp. tACS provides the ability to entrain intrinsic oscillations to specific frequencies. Through the employment of new hardware, the timings of stimuli presentation and the phase of tACS signals were accurately recorded …
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Nanoscale magnetic resonance imaging using silicon nanowire oscillators
… we have developed a technique, which uses electric currents through a nanoscale metal constriction to generate time-dependent magnetic field gradients to couple nuclear spins in a sample to the resonant displacement of the nanowire oscillator. The ability to generate time-dependent fields …
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Instant Conductors
… whole. Universal truths or no, these are the electric currents of language. They are hazardous. They are harmless. They are instances and instants.
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Guided Wave Actuation for Enhanced Damage Identification in Carbon Fiber Reinforced Polymer Material Using Electrical Resistance Tomography
… mechanical performance of aerospace structures. Electrical Resistance Tomography (ERT) is a non-destructive evaluation technique that uses surface voltage measurements with electric currents injections in the material to measure electrical conductivity changes induced by damage. Accurate and …
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Some aspects of magnetohydrodynamics
… caused by the interaction of the motion of electrically conducting fluids with magnetic fields. Such phenomena, the study of which is usually known as Magnetohydrodynamics (MHD), occur on a galactic, planetary or laboratory length scale; however in this thesis we concentrate on those …
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Multi-Scale Model of the Stability of a Laterally Heated Liquid Bridge Under the Influence of an Axial Magnetic Field
… is grown in the presence of a magnetic field, electric currents are generated in the conducting melt. These currents interact with the magnetic field, producing Lorentz body forces, which damp the thermocapillary flow, and delay the onset of transition. While this is the accepted explanation of …
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Design, fabrication, and characterization of magnetic nanostructures
… but uses lower magnetic fields or even only electric currents is highly desired and could be useful for the design and fabrication of spintronic devices of tomorrow.<br/>In this thesis, the use of electron beam lithography (EBL) and a bilayer liftoff process to fabricate magnetic Ni …
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Lightning Electromagnetic Pulse Functions and Protecting the Artemis Spacecraft
Lightning produces some of the most powerful electric currents found on Earth, which are usually measured near the bottom or base of the lightning channel. However, these lightning “channel-base currents” also produce Electromagnetic Pulses (EMPs) which are powerful enough to be measured from the …
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Magnetic Skyrmions in Multilayers with Interfacial Dzyaloshinskii-Moriya Interactions
… stable spin textures that can be driven by electric currents efficiently, have both rich physics and potential applications in future technology such as spintronic devices for data storage. Magnetic skyrmions in multilayers with interfacial Dzyaloshinskii-Moriya interaction (DMI) were …
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