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.
Results
Showing 1 to 16 of 16 for “"Dc Magnetic Field"”.
-
Modelling of liquid droplet dynamics in a high DC magnetic field
… droplet both in free space and with a high DC magnetic field used to balance gravitational forces. The numerical model is a grid point formulation of the pseudo-spectral collocation method discretised in a spherical coordinate system with the implicit Euler method used to advance the …
-
Ferrohydrodynamic flows in uniform and non-uniform rotating magnetic fields
Ferrofluids are conventionally used in such DC magnetic field applications as rotary and exclusion seals, stepper motor dampers, and heat transfer fluids. Recent research demonstrates ferrofluid use in alternating and rotating magnetic fields for MEMS/NEMS application of microfluidic devices and …
-
Magnetic Material Effects On Rf Circuits
This thesis discusses the interaction of magnetic materials and high frequency signals inside of microstrip transmission line circuits. This work is based on microstrip circuit designs that use magnetic materials for either the ground plane and/or as an insert inside the microstrip substrate. The …
-
Melt motion in floating-zone process for single crystal growth with an axial magnetic field
… the floating-zone process with an applied axial magnetic field, for a dislocation-free single crystal, is studied by using asymptotic expansion. Centrifugal force, crystal growth speed, buoyancy, thermocapillarity and electromagnetic body force are the driving forces involved in the floating-zone …
-
Ferrofluid dynamics in a Hele-Shaw cell simultaneously stressed by DC and rotating magnetic fields
… experiments have been repeated to evaluate magnetic fluid behavior in DC, AC and rotating magnetic fields. Understanding these behaviors are essential to the ferrohydrodynamic applications of ferrofluids in biomedicine. Careful measurements in Hele-Shaw cells with simultaneous perpendicular …
-
Magnetoelectric Composites for On-Chip Near-Resonance Applications
… polarization (P) of a material under an applied magnetic field (H) or an induced magnetization (M) under an external electric field (E). ME materials have attracted number of investigators due to their potential for improving applications such as magnetic field sensors, filters, transformers, …
-
Elf magnetic field influence on ION Channels studied by Patch Clamp Technique: exposure set up and "Whole Cell" measurements on Potassium currents
… effects of extremely low frequency (ELF) electromagnetic magnetic fields on potassium currents in neural cell lines ( Neuroblastoma SK-N-BE ), using the whole-cell Patch Clamp technique. Such technique is a sophisticated tool capable to investigate the electrophysiological activity at a single …
-
Resistive-type Superconducting Fault Current Limiter (RSFCL) and Its Application in Power Systems
… of experiments were performed to study the magnetic field-angular dependence of the critical current of different commercial YBCO samples. We selected ten 2G-HTS tapes with broad differences in width, fabrication process, and laminar structure. The obtained I_c (B,θ) characteristics of HTS …
-
Magnetic fluid flow phenomena in DC and rotating magnetic fields
An investigation of magnetic fluid experiments and analysis is presented in three parts: a study of magnetic field induced torques in magnetorheological fluids, a characterization and quantitative measurement of properties relating to the transition of a ferrofluid drop from a continuous phase into …
-
Radio frequency miniature passive devices: ferrite antennas and inductors
… of magnetization dynamics with electromagnetic waves in the RF devices allows electromagnetic radiation, wave propagation, and RF signal processing. Ferrites possess both frequency-dependent permeability and permittivity. Thus, miniaturization and electromagnetic scaling of antennas and …
-
Rotating, hydromagnetic laboratory experiment modelling planetary cores
… conductive fluid can give rise to a spontaneous magnetic field. Our experimental apparatus, meant to be a laboratory model of Earth's core, contains liquid sodium between an inner, solid sphere and an outer, spherical shell. The fluid is driven by the differential rotation of these two …
-
Magnetic quartz crystal microbalance
… for using quartz crystal microbalance (QCM) in magnetic field was explored. This technique would take advantage of the sensitive nature of QCM to vibration changes. The idea is to perturb the QCM vibrations with magnetic materials on it by applying magnetic field. A new instrument called …
-
Paramagnetic resonance studies of trivalent dysprosium and cerium in the cubic host dicesium sodium yttrium hexachloride
We have used X-band electron paramagnetic resonance (EPR) to study octahec1rally coordinated rare earth ions in the host lattice CSNaYC16, This host is ,ideal for EPR work, because all the trivalent rare earths will substitute into the Y3+ site which has exactly octahedral symmetry, Previous EPR …
-
Magnetoelectric (ME) composites and functional devices based on ME effect
… (ME) effect, a cross-coupling effect between magnetic and electric orders, has stimulated lots of investigations due to the potential for applications as multifunctional devices. In this thesis, I have investigated and optimized the ME effect in Metglas/piezo-fibers ME composites with a …
-
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 …
-
Magneto-mechanical systems for ultra-low frequency data transmission: Dynamics, losses, and driving mechanisms
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01