Materials Literature
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In dieser Diplomarbeit wurde die elektrostatische Partikelbeladung von Aerosolteilchen durch Weichröntgenstrahlung sowie die Nanopartikelbildung unter dem Einfluss von Weichröntgenstrahlung experimentell untersucht. Es wurde auch das Mobilitätsspektrum der durch die Weichröntgenstrahlung gebildeten Ionen beider Polari…
The increase in the energy consumption and the expected growth in the nuclear capacity make it necessary to look on for new technologies based in more sustainable and safe principles, such as lead-cooled reactors. This technology has been studied intermittently since the 1950s and is being considered nowadays as one o…
Over half of the carbon (C) taking part in the global C cycle is held in terrestrial systems. \nBecause of the sensitivity of the C cycle to changes in such soil-based pools of carbon, it is \nimportant to understand the basic mechanisms by which soil C is stored and cycled between the \nrange of di erent pools which…
This thesis focuses on the preparation of functional synthetic polymer fibers and films using the process called solvent crazing. Solvent crazing is a very complex phenomenon, which is realized by polymer drawing in the presence of liquid environment. Four principle stages of solvent crazing i.e. craze nucleation, cra…
Chalcogenide glasses possess exceptional infrared transparency, large non-linear refractive indexes and low phonon energies, making them good candidates for infrared optical applications. Previous studies in the Ge-Sb-S glass system have shown an increase in the nonlinear refractive index with an iso-structural substi…
Chromated copper arsenate (CCA) has been the most commonly used wood preservative in the UK; up until its partial ban in 2004. The preservative prolongs the service life of wood by 20-50 years by making it resistant to biological attack. As such, in-service CCA treated wood is expected to be a major component of the U…
Diatoms are key contributors for both, the global oceanic primary production and the export of carbon toward the deep oceanic layer. Their peculiar metabolism coupled Silicium and Carbon via the synthesis of their frustule made of biogenic silica. During this thesis, Si-C interactions inside diatoms were characterized…
This PhD project aims to develop lead-free thin-film dielectric materials for fixed value, voltage tunable and high-k zipping variable capacitors using growth techniques that can be scaled for silicon batch fabrication. The thesis specifically details the growth and characterisation of barium zirconate titanate (BZT)…
Paper presented at the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July, 2010.
A comprehensive study of domain switching process in different ferroelastic and ferroelastic/ferroelectric perovskite structured ceramics has been performed. The effects of thermal fluctuations on domain switching dynamics were investigated in the ferroelastic and in the ferroelectric case under static and dynamic ele…
This dissertation reported an experimental answer to the long-standing question of how three-dimensionality appears in wall-bounded magnetohydrodynamic flows and presented also an experimental study on the transition to turbulence in a confined, mostly quasi two-dimensional flow. Accordingly, it was shown the analysis…
TiO2 has been extensively studied in the last decades due to its interesting optical and electronic properties, which, combined with low fabrication costs, renders this material very attractive for applications in photovoltaic and photocatalysis. However, the performances of titania in specific device applications wer…
A novel localized surface plasmon resonance (LSPR) sensor that differentiates between background refractive index changes and surface-binding of a target analyte (e.g. a target molecule, protein, or bacterium) is presented. Standard, single channel LSPR sensors cannot differentiate these two effects as their design al…
Offshore wind farm structures may have the potential to affect marine navigation and communication systems by reflecting radar signals.With ever increasing size of wind turbines it is necessary to better understand the influence of radar signals on wind turbine blades in order to minimise the radar reflecting potentia…
Magnetic refrigeration at room temperature, an alternative to conventional refrigeration, requires efficient magnetocaloric materials. The magnetocaloric effect is reflected by an entropy variation or a temperature variation of the material undergoes a magnetic field. The LaFe13-xSix type compounds present interesting…
Proton-coupled electron transfer (PCET) is one of the elementary reactions occurring in many chemical and biological systems, such as photosystem II where the oxidation of tyrosine (TyrZ) is coupled to deprotonation of the phenolic proton. This reaction is here modelled by the oxidation of a phenol covalently linked t…
Final incorporates comments by Ned Sauthoff and Brad Nelson Version dated 02-16-10 incorporates comments from Neill Taylor, IO Nuclear Safety and Environment Division Director.
Fatigue properties of the tungsten-based alloys IT180 (W-3.5Ni-1.5wt%Cu) and D176 (W-5Ni-2.5wt%Fe) have been determined using constant amplitude stress-controlled fatigue tests. These tests were performed at room temperature at relatively high cycle fatigue lives. The results indicate that the endurance limit for the…
Hydrogels, which are three-dimensional crosslinked hydrophilic polymers, have been used and studied widely as vehicles for drug delivery due to their good biocompatibility. Traditional methods to load therapeutic proteins into hydrogels have some disadvantages. Biological activity of drugs or proteins can be compromis…
The barnacle Balanus improvisus is a major fouling organism in Swedish waters. Settling of barnacles onto ship hulls leads to biofouling. Antifouling paints are used to prevent the settlement of the barnacles on ship hulls, but some of these have severe impact on marine ecosystems. G-protein-coupled octopamine recepto…