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 18 of 18 for “"Magnetic field gradient"”.
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Thermometry and cooling of ultracold atoms in an optical lattice
… system was then studied in the presence of a magnetic field gradient and an optical lattice. The presence of a magnetic field gradient separated the atoms into regions of opposite spin, with a boundary region of mixed spin in the center. In the presence of an optical lattice, the width of this …
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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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High pressure carbon-13 NMR studies of dynamics in disordered systems
… system that allows a direct determination of the magnetic field gradient used in NMR diffusion studies.
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Characterization of a two-color magneto-optical trap for a spin-squeezed optical lattice clock
… transitions, in order to reduce the minimum magnetic field gradient required for trapping atoms. From the experimental data, we propose a model of the MOT where one transition is responsible for trapping the atoms the other transition is responsible for cooling the atoms. In order to test …
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Magnetic forces for surface-based bioanalysis in microfluidic devices
… rapid, simple to use and can be utilised in the field or at the point-of-care. Microfluidic technology has gone some way to producing such systems, however many of the current devices still incorporate batch methods of analysis, which are still time consuming or do not integrate all steps of the …
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Magnetically activated and guided isotope separation
… a technique for stable isotope enrichment called Magnetically Activated and Guided Isotope Separation (MAGIS) (1). Over the past century a large number of enriched isotopes have become available, thanks largely to electromagnetic separators called calutrons that were developed during World War II. …
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Dynamic spatially resolved unilateral NMR measurements of liquid ingress and vapour adsorption and desorption in heterogeneous layered fabrics
… This project was undertaken with a low-field unilateral profile NMR Mouse® (MObile Universal Surface Explorer) which can collect signal from a thin and flat sensitive volume (ca. 1.5 cm x 1.5 cm x 0.6 mm) up to 10 mm above it, and in a non-invasive manner. The instrument uses a strong …
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Study of microscopic structure via NMR diffusive scattering
Scattering experiments can be carried out by gradient nuclear magnetic resonance(NMR) methods. Magnetic field gradient pulses are utilized to create linear phase ramps of the spin magnetization across the sample along arbitrary directions. The linear phase ramps are defined as dynamic spin …
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ENGINEERING MAGNETIC DEVICE AND NANOPARTICLES PLATFORMS TO IMPROVE DRUG ACCUMULATION AND PENETRATION IN TUMORS FOR ENHANCED CANCER TREATMENT
… Among various external stimulus strategies, magnetic fields induced by single external static magnets have been employed to improve the delivery of magnetic nanocarriers to tumors. However, their effectiveness is limited to superficial tumors due to the rapid decline in magnetic field …
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Nuclear magnetic resonance microscopy
… design and applications of an improved Nuclear Magnetic Resonance (NMR) microscope, which permits MRI to study small sample sizes ( < 2mm) at high resolution (up to 2[mu]m). The effects of molecular diffusion and local variations in the magnetic susceptibility in NMR microscopy are described, …
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NMR-Bildgebung an periodisch bewegten Systemen
The Usage of the magnetic resonance imaging (mri) technique to determine material properties inside a body without destroying the corpus is a major advantage of this method. In this context the aim of mapping local stiffness in a body and representing it in form of an image is commonly refered to …
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Enhanced Navigation Using Aerial Magnetic Field Mapping
… applies the methods of previous work in aerial magnetic field mapping and use in state estimation to the Virginia Tech Swing Space motion capture indoor facility. State estimation with magnetic field data acquired from a quadrotor is comparatively performed with Gaussian process regression, a …
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Locally Tuneable Quantum Hamiltonians with Neutral Atoms in Optical Lattices
… modulations can also be harnessed to yield a magnetic field gradient in 2D. The ability to encode and study Hamiltonians with arbitrary local tunnelling co-efficients will allow optical lattice experiments to simulate an incredibly diverse range of problems and quantum phenomena well beyond …
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Nonlocal correlations between freely propagating pairs of atoms
… considered its weakness, to opening up vibrant fields of research and enabling classically untenable technologies. Perhaps the most striking aspect of quantum mechanics is exhibited in the infamous Einstein-Podolsky-Rosen (EPR) paradox, as the violation of locality from distant entangled …
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Nonlocal correlations between freely propagating pairs of atoms
… considered its weakness, to opening up vibrant fields of research and enabling classically untenable technologies. Perhaps the most striking aspect of quantum mechanics is exhibited in the infamous Einstein-Podolsky-Rosen (EPR) paradox, as the violation of locality from distant entangled …
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Nanoscale magnetometry with a microcontroller-based magnetometer using a single nitrogen-vacancy defect in nanodiamond
… that presents extraordinary sensitivity to magnetic fields and allows sensing schemes with high spatial resolution. Moreover, its paramagnetic triplet ground state evidences predominantly spin-spin interaction that splits the spin projection mgs = 0 from the degenerate state mgs = ±1 by Dgs …
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Pulsed field gradient magnetic resonance measurements of lithium-ion diffusion
… and the resulting macroscopic transport. Gradient nuclear magnetic resonance measurements are a mature and effective means of investigating macroscopic transport phenomena and posses several advantages over competing measures of transport in ionic solids. However, short coherence times, …