Sökning: "directional emission"
Visar resultat 6 - 10 av 11 avhandlingar innehållade orden directional emission.
6. Exciton coupling and energy transfer in perylene-based systems
Sammanfattning : Understanding the nature of photoinduced processes in organic molecules is essential for the design and synthesis of compounds with desired photochemical properties. This dissertation aims for gaining knowledge and mechanistic understanding of energy transfer in perylene-based systems. LÄS MER
7. A Compact High-Brightness Liquid-Metal-Jet X-Ray Source
Sammanfattning : This thesis describes the development and characterization of a compact high-brightness liquid-metal-jet anode x-ray source. Initial calculations show that a source based on this concept could potentially lead to a >100-fold increase of the brightness compared to current state-of-the-art rotating-anode x-ray sources. LÄS MER
8. Nanostructured electromagnetic metasurfaces at optical frequencies
Sammanfattning : Electromagnetic metasurfaces are broadly defined as optically thin layersthat are structured on the subwavelength scale. In general, metasurfacesthus consist of nanoparticles, or other kinds of ”meta-atom”, arranged insome pattern where both the individual particle sizes and the inter-particledistances are much smaller than the wavelength. LÄS MER
9. Bioenergy, pollution, and economic growth
Sammanfattning : This thesis consists of four papers: two of them deal with the effects on the forest sector of an increase in the demand for forest fuels, and two of them concern the relation between economic growth and pollution. Paper [I] is a first, preliminary study of the potential effects on the Swedish forest sector of a continuing rise in the use of forest resources as a fuel in energy generation. LÄS MER
10. Industrial framework for hot-spot identification and verification in automotive composite structures
Sammanfattning : The automotive industry needs to reduce energy consumption to decrease environmental impact. This can be achieved by reducing the weight of cars, which would consequently reduce the energy consumption and emission of greenhouse gases. LÄS MER