Search for dissertations about: "near fields"
Showing result 1 - 5 of 150 swedish dissertations containing the words near fields.
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1. Auroral Electric Fields From Satellite Observations and Numerical Modelling
Abstract : This thesis is about electrodynamics of thehigh-latitude/auroral region of near-Earth space. The work ismainly based on electric field measurements made by the doubleprobe instrument on the Freja satellite at altitudes ofapproximately 800-1700 km, together with measurements fromother instruments on the same satellite, and ground-basedinstrumentation. READ MORE
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2. Magnetic fields of cool stars from near-infrared spectropolarimetry
Abstract : Magnetic fields rule many physical processes in and around stars throughout their lifetime. All cool stars possess a magnetic field, likely generated by dynamo processes. In order to properly understand the evolution of cool stars, we need to understand their magnetism. READ MORE
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3. Ultrafast spin, lattice, and electron dynamics in thin metallic films : in the terahertz, near-infrared, and extreme ultraviolet regimes
Abstract : In this thesis, we studied the ultrafast spin and electron dynamics triggered by electromagnetic radiation belonging to three different regions of the electromagnetic spectrum, namely terahertz, near-infrared and extreme ultraviolet. By performing pump–probe measurements, we explored the role of the lattice in ultrafast spin and electron dynamics in metallic thin films. READ MORE
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4. Characterization and Design Requirements for Antennas in the Near-field and the Random-LOS Propagation Environment
Abstract : The choice of antenna for a particular application depends on the requirements imposed by that application. These can be, the application's field region (i.e., near-field or far-field), polarization, radiation pattern, radiation efficiency, system throughput, etc. READ MORE
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5. Measurement of trace components in aqueous solutions with near and mid infrared Fourier transform spectroscopy
Abstract : This thesis treats various aspects of the measurement of trace components in aqueous solutions with Fourier transform infrared spectroscopy. This technique has several applications from such diverse fields as dairy industry and biomedical optics. READ MORE