Browsing Institutt for fysikk by Subject "Fysikk og matematikk, Teknisk fysikk"
Now showing items 41-60 of 135
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The Development of Structural and Morphological Features during Gel-Spinning of UHMWPE Fibers
(Master thesis, 2018)This thesis reports on the effect of processing conditions, including the presence and chemical nature of solvents, on the structure, morphology, and properties of concentrated ultra-high molecular weight polyethylene ... -
Dimensional reduction of the Two-Higgs Doublet Model with a softly broken Z2 symmetry at one-loop
(Master thesis, 2017)In the collaboration between NTNU, the University of Stavanger, and the University of Helsinki we pursue a satisfactory answer to the problem of baryogenesis, i.e. the origin of the asymmetry in the amount of baryons and ... -
Doped ZnS Thin Films for Intermediate Band Solar Cells - Deposition and Characterization
(Master thesis, 2015)Intermediate band solar cells (IBSCs) has the potential of increasing the efficiency and reducing the cost of commercial solar cells. The realization of such cells relies on the development of intermediate band (IB) ... -
Drivers of the high frequency variability of gravity wave forcing in the mesosphere and lower thermosphere
(Master thesis, 2015)In this thesis the influence of gravity waves (GWs) in the mesosphere/lower thermosphere (MLT) was analysed. This was inspired by the work done in the paper by de Wit et al. (2014), which used the SKiYMET meteor radar in ... -
The effect of deformation and natural ageing in an Al-Mg-Si-Cu alloy with high Cu-content: A transmission electron microscopy study
(Master thesis, 2018)The effect of the combination of natural ageing and deformation to 80 % on precipitation in an Al-Mg-Si-Cu alloy has been investigated by different transmission electron microscopy (TEM) techniques. Similar research is ... -
Effective Polyakov Loop Modeling of QCD - A Field Theoretical Study of the Phase Diagram of Quark Matter
(Master thesis, 2018)In this thesis we study the phase diagram of two-flavor quantum chromodynamics with effective models. We investigate the phase diagram in the baryon chemical potential temperature and magnetic field temperature planes. As ... -
Effekter av manglende Lorentz-invarians på Nambu-Goldstone bosoner
(Master thesis, 2015)I denne avhandlingen diskuterer vi symmetrier av feltteorier både med og uten Lorentz-invarians. Vi konstruerer en feltteori fri for interaksjoner som er invariant under den Euklidske gruppen E(2), har tilhørende Euler-Lagrange ... -
Electric Control of Skyrmion Dynamics and Spin Torque Oscillators in Magnetic Materials with Inversion Asymmetry
(Master thesis, 2016)In this thesis the skyrmion velocity in the presence of spin-transfer torques, Rashba spin-orbit coupling and a constant electric field gradient is derived analytically based on a collective coordinate approach in the ... -
Electrical Excitation of Water Drops in Oil
(Master thesis, 2015)Water drops in oil are excited by the use of electric fields. This thesis looks at the behavior of water drops subjected to different fields. These fields vary in shape and strength. The motivation behind is separation of ... -
Electron Microscopy Characterization of III-Nitride Nanowires grown on Graphene
(Master thesis, 2018)GaN nanowires grown on graphene glass using molecular beam epitaxy have been studied using scanning electron microscopy and different transmission electron microscopy techniques. The nanowires have an AlN nucleation particle ... -
Electron-phonon coupling in graphene
(Master thesis, 2018)The aim of this Master thesis was to perform a theoretical study of the electron-phonon coupling in graphene. The main results of the thesis are the electron-phonon coupling constant as a function of ... -
Emisjon av ultrafiolett lys fra positive streamere i sykloheksan
(Master thesis, 2016)Isolerende væsker for elektriske komponenter, går til gjennomslag ved høyt elektrisk felt grunnet et fenomen kalt streamere. Streamere er elektrisk ledende kanaler av gass eller plasma som propagerer raskere desto høyere den ... -
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, ... -
Evaluation of Acousto-Optic Tunable Filter for Wavelength Dependent Measurements of Waveguides
(Master thesis, 2017)The main part of the work done for this master's thesis have been to implement and characterize a setup that would allow for wavelength dependent measurements of losses in waveguides. A plasma enhanced white light source ... -
Evanescent light field trapping and transport of micro- and nanocrystals of biological macromolecules on a waveguide for serial crystallography.
(Master thesis, 2016)A microfluidic evanescent field optical tweezer system was tested and developed for sample delivery of micro- and nanocrystals in serial crystallography. The fluid line was enforced, and the setup changed from vacuum ... -
Experimental Evaluation of Broadband Wave Propagation in Plates
(Master thesis, 2016)As the number of aging oil field in the North Sea is increasing, the number of plug and abandonment (P&A) jobs which has to be conducted on the wells going out of production, e.g. to prevent hydrocarbons from leaking out ... -
Exploring avenus for compressed sensing in X-ray tomography
(Master thesis, 2018)In this paper different ways to reduce the amount of data associated with tomographic scans were explored. The L-BFGS algorithm was tested using a SIRT back-projection as its gradient. It showed faster and better convergence ... -
Exploring Biopolymers by the Fibre Bundle Model
(Master thesis, 2017)Bundles of polymeric chains in biological systems represent the analogue of macroscopic fibrous materials such as textile, wood or paper, scaled down to nanometric dimensions, and performing the same mechanical functions ... -
Feasibility of Using Phototherapy with Sunlight for Treatment of Neonatal Jaundice in Low-Income Countries
(Master thesis, 2016)This thesis aimed to investigate the feasibility of using sunlight exposure as treatment for neonatal jaundice in low-income countries. The investigation answered four questions: 1. Is it feasible to treat infants with ... -
Finite Element Modeling of Heat Generation in 1-3 Piezocomposite Transducers for Underwater Ultrasonic Applications
(Master thesis, 2018)Today, piezoelectric ultrasound transducers are used extensively for underwater applications such as sonar. In such transducers, operating in thickness mode, the active part is often a 1-3 piezocomposite, usually made of ...