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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 15 of 15 for “"Ac Magnetic Field"”.
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Magnetisation of bulk superconductors for future light-weight electric motors
Bulk superconductors, in their capacity as trapped field magnets, offer a practical means of generating high magnetic fields in small volumes. This is desirable for applications in which portability is of primary concern. In particular, superconducting materials are seen as enablers leading towards …
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Study of porous magnetic nanocomposites for bio-catalysis and drug delivery
… for drug delivery applications. Utilising magnetic nanoparticles in drug delivery systems allowed for the synergistic effects of hyperthermia and heat triggered drug released. The drug delivery systems developed in this project include magnetoliposomes, magnetic micelles, mesoporous …
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Electrical characterization of high temperature superconductors as a function of temperature
… for two different BSCCO-2223/Ag tapes manufactured by Vacuumschmelze (VAC). The critical currents for the two VAC samples were measured as a function of magnetic field strength. The critical current of each sample was well described by the generalized Kim model. The critical current was also …
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Correlation lengths, disorder, and dynamics of vortex matter as heard through the noise
… broad-band noise is sensitive to extremely small AC magnetic field perturbations (at ~ 100 Hz); δH/H~ 10⁻⁵ can reduce the noise power at 1 Hz by a factor of2. This sensitivity of the broad-band noise reflects a loss of configurational memory, which is directly related to a correlation length (Ln) …
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Interaction of Nanoparticles with RF, AC, and Static Magnetic Fields in Thermal and Non-Thermal Cancer Therapy Applications
Electromagnetics plays a crucial role in the interdisciplinary science of addressing the complex problem of targeted cancer therapy. Thermal therapies such as radio-frequency and microwave hyperthermia and ablation techniques though effective in ablating tumors are non-target specific. The …
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Induced Phase Transition in Magnetoelectric BiFeO3 Crystals, Thin-layers and Ceramics
… simultaneously ferroelectric and antiferromagnetic properties. We have used high-field electron spin resonance (ESR) as a local probe of the magnetic order in the magnetic range of 0-25 Tesla. With increasing magnetic field, an induced transition has been found between incommensurately …
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Investigation Of Temperature Dependent Magnetic Hyperthermia In Fe3o4 Ferrofluids
<p>Magnetic nanoparticles (MNPs) of Fe3O4 and gamma-Fe2O3 have been exploited in the biomedical fields for imaging, targeted drug delivery and magnetic hyperthermia. Magnetic hyperthermia (MHT), the production of heat using ferrofluids, colloidal suspensions of MNPs, in an external AC magnetic …
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Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis
… Superconductors, which covers their electromagnetic characteristics and AC loss analysis. Lorentz Force Electrical Impedance Tomography (LFEIT) is one of the most promising hybrid diagnostic scanners with burgeoning potential for biological imaging, particularly in the detection of cancer …
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Ionic Copolymer-Magnetite Complexes for Magnetic Resonance Imaging and Drug Delivery
… is focused on the design, synthesis and characterization of magnetite-ionic copolymer complexes as nanocarriers for drug delivery and magnetic resonance imaging. The polymers included phosphonate and carboxylate-containing graft and block copolymers. Oleic-acid coated magnetite nanoparticles …
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MEMS Technologies for Energy Harvesting and Sensing
MEMS devices are finding application in diverse fields that include energy harvesting, microelectronics and sensors. In energy harvesting, MEMS scale devices are employed due to its efficiencies of scale. The miniaturization of energy harvesters permit them to be integrated as the power supply for …
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Nanoscale thermal transport for biological and physical applications
… and physical applications. For instance, magnetic fluid hyperthermia (MFH), an emerging cancer treatment, is a noninvasive method to selectively destroy a tumor by heating a ferrofluid-impregnated malignant tissue with minimal damage to the surrounding healthy tissue. We model the problem …
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Thermally Responsive Peptide Coated Superparamagnetic Iron Oxide Nanoparticles for Drug Delivery
… release, be directed towards desired site, track payloads via contrast imaging, heat the effected sites and trigger drug release. In this context, superparamagnetic iron oxide nanoparticles based drug delivery systems are highly desirable. Superparamagnetic iron oxide nanoparticles upon …
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HTS Magnets: Modelling, Charging and Large Scale Applications
… of engineering application areas such as high-field magnets for medical imaging and nuclear fusion. Despite the promise, the low industrial maturity of HTS has limited their adoption. In addition, cooling them to cryogenic levels requires careful design considerations. This thesis addresses …
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Ferrofluid spin-up flows from uniform and non-uniform rotating magnetic fields
… is subjected to a rotating azimuthally directed magnetic field, the fluid "spins up" into an almost rigid-body rotation where ferrofluid nanoparticles have both a linear and an angular "spin" velocity. Flow observations are often limited to the ferrofluid free surface due to the opaque nature of …
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Magneto-mechanical systems for ultra-low frequency data transmission: Dynamics, losses, and driving mechanisms
… under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01