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Cooling of Transducer array used for Ultrasound radiation Force
(Master thesis, 2015)This thesis proposed a way to cool an ultrasound transducer. The cooling method is to have a an area on the casing of the transducer that has a high thermal conductivity, and a high emissivity. This layer is meant to ... -
Spin-Motive Forces and Coulomb Interaction in a Ferromagnetic Wire
(Master thesis, 2015)In metallic ferromagnets, external voltages induce charge and spin-polarized currents. Additionally, there can be magnetization dynamics, where the magnetic moments precess in time in response to external magnetic fields. ... -
Maximum Likelihood Analysis of IceCube Data: - Could Decaying Dark Matter explain the high energy Neutrino Excess?
(Master thesis, 2015)In this theoretical physics master thesis I've looked at a set of observations from a neutrino observatory in Antarctica called IceCube. This observatory has observed more high energy neutrinos than expected. I wanted to ... -
Single Cell Confocal Raman Spectroscopy of Human Osteoarthritic Chondrocytes: A Preliminary Study
(Journal article; Peer reviewed, 2015)A great deal of effort has been focused on exploring the underlying molecular mechanism of osteoarthritis (OA) especially at the cellular level. We report a confocal Raman spectroscopic investigation on human osteoarthritic ... -
Properties of Transition Metal Substituted Zinc Sulfide Hexamers and Dodecamers
(Journal article, 2015)Density functional theory was used to study the structural and electronic properties of endohedrally- and substitutionally-doped Zn6S6 and Zn12S12 clusters with first-row transition metal atoms. Generally, the lowest energy ... -
Effects of Germanium, Copper, and Silver Substitutions on Hardness and Microstructure in Lean Al-Mg-Si Alloys
(Journal article; Peer reviewed, 2015)It is shown that strength loss in a 6060 Al-Mg-Si alloy caused by reduction in solute can be compensated by adding back smaller quantities of Ag, Ge, and Cu. Nine alloys were investigated. Ge was found to be the most ... -
Examining the three-dimensional structure of an AlGaAs shell on GaAs nanowires
(Master thesis, 2015)Semiconducting direct-bandgap nanowires (NWs) are a promising material system for future optoelectronic devices. In this work, the effect of shell growth temperature has been examined on the structural and optical properties ... -
Design of an End-Pumped Laser Source for Generation of High-Energy Nanosecond Pulses at 1.6 µm Wavelength
(Master thesis, 2015)A numerical model for simulating a pulsed laser has been implemented. The modelled laser can generate pulses with a duration of a few nanoseconds and a tunable wavelength. The laser consists of a diode-pumped neodymium-LiYF4 ... -
Signature of magnetic-dependent gapless odd frequency states at superconductor/ferromagnet interfaces
(Journal article; Peer reviewed, 2015)The theory of superconductivity developed by Bardeen, Cooper and Schrieffer (BCS) explains the stabilization of electron pairs into a spin-singlet, even frequency, state by the formation of an energy gap within which the ... -
Inverse magnetic catalysis and regularization in the quark-meson model
(Journal article; Peer reviewed, 2015)Motivated by recent work on inverse magnetic catalysis at finite temperature, we study the quark-meson model using both dimensional regularization and a sharp cutoff. We calculate the critical temperature for the chiral ... -
Radiation fields and viscous cosmology - Friction in General Relativity
(Master thesis, 2015)Certain aspects of the Lorentz transformation, sometimes called beaming, aberration or transverse Doppler effect, induce viscosity-like effects on extended objects moving through radiation fields. In this thesis, these ... -
Rapid Directional Recrystallisation of SiGe Fibres
(Master thesis, 2015)Fibre av \ce{SiGe} fremstilt ved flytende kjerne-trekking har blitt rekrystallisert ved bruk av to forskjellige teknikker: Sakte kj{\o}ling i en tubeovn og bevegende smeltesone-rekrystallisering med en \ce{CO2}-laser. To ... -
Waves Propagating on Fluids with Piecewise Constant Vorticity
(Master thesis, 2015)The purpose of this study was to find the dispersion relation for waves on an arbitrary current velocity profile approximated by N linear layers. Using a Stokes expansion to first order in the steepness parameter ka the ... -
Stereotactic Radiation Treatment of Lung Cancer by VMAT.
(Master thesis, 2015)Radiotherapy of early stage non-small cell lung cancer (NSCLC) is a challenging treatment due to the varying tissue densities in the irradiated volume and the moving target. At Haukeland University Hospital (HUH) the ... -
Degradation of the Chemotherapy Drug 5-Fluorouracil on Surfaces
(Master thesis, 2015)The catalytic effect of different materials concerning degradation of the chemo therapy drug 5-Fluorouracil (5-Fu) has been studied using X-ray Photoelectron Spectroscopy and X-ray Absorption Spectroscopy. The materials ... -
Coating for Metal Bipolar Plates in PEM Water Electrolysers
(Master thesis, 2015)To increase the efficiency of hydrogen as an energy storage medium, this project's goal is to lower the cost of Proton Exchange Membrane Water Electrolysers (PEMWE) by decreasing the cost of the most expensive component: ... -
NAO-Influence on Temperature Trends in Norway and Canada for the last 50 Years
(Master thesis, 2015)The paper looks at how much of the temperature changes the last 50 years in Norway and East Canada/West Greenland that can be explained by NAO, and how much that must be explained by other weather drivers. Finally it also ... -
Method development and automated analysis of ultrasound images of phase-shift bubbles.
(Master thesis, 2015)Ultrasound mediated drug delivery is an important tool in the fight against cancer. A new concept called Acoustic Cluster Therapy (ACT ) is under development, and two pilot imaging studies have been performed on prostate cancer ... -
Energy Considerations of Initiation of Fast Streamers in Cyclohexane
(Master thesis, 2015)The purpose of this study is to improve a model of streamer propagation in dielectric liquid by Hestad et al. at Sintef Energy Research, by considering the energy in an initiated second mode streamer. This is important, ... -
Nanoparticle delivery to the brain - By focused ultrasound and self-assembled nanoparticle-stabilized microbubbles
(Journal article, 2015)The blood–brain barrier (BBB) constitutes a significant obstacle for the delivery of drugs into the central nervous system (CNS). Nanoparticles have been able to partly overcome this obstacle and can thus improve drug ...