Browsing Institutt for fysikk by Title
Now showing items 1294-1313 of 2712
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Light Emission of Streamers in Dielectric Liquids
(Master thesis, 2017)Liquid insulation is widely used in various high voltage equipments crucial to a modern electrical grid. It is thus important to understand the behaviour and limits of performance for such liquids. In these experiments, ... -
Light trapping in horizontally aligned silicon microwire solar cells
(Journal article; Peer reviewed, 2015)In this study, we demonstrate a solar cell design based on horizontally aligned microwires fabricated from 99.98% pure silicon via the molten core fiber drawing method. A similar structure consisting of 50 μm diameter close ... -
Limits on primordial black holes
(Master thesis, 2024)Primordiale sorte hull kan bidra til den totale massefraksjonen av den kalde mørke materien. I massevinduet $10^{16}-10^{17} g$ kan bidraget deres være signifikant. Emisjon av Hawking-stråling fra de primordiale sorte ... -
Linac Specific Quality Assurance and Risk Analysis as a Tool for Improving Quality Assurance in Radiotherapy
(Master thesis, 2019)Moderne stråleterapi krever høyt nivå av nøyaktighet for å oppnå behandlingsmålet; tumor kontroll kombinert med lav sannsynlighet for normalvevskomplikasjoner. For å oppnå dette må alle stegene i stråleterapiprossesen være ... -
Linearized general relativity and its quantization
(Master thesis, 2017)We begin by deriving the Einstein equation from the Einstein-Hilbert action integral using variational methods; Variation with respect to the metric and the Palatini variation. The vacuum solution (Schwarzschild solution) ... -
Linking mechanical properties to precipitate microstructure in three Al-Mg-Si(-Cu) alloys
(Peer reviewed; Journal article, 2021)The mechanical properties of age hardenable Al alloys depend strongly on the precipitate microstructure. This work has investigated the relationship between properties such as strength and ductility and the distribution ... -
Lithium ion conductivity and phase composition of 3Li2S + P2S5 - 2LiBH4 + LiBr composites.
(Master thesis, 2018)The crystal structure and electrochemical properties of a mixed 3Li2S + P2S5 - 2LiBH4 LiBr system have been studied, with the aim to investigate relations between ionic conductivity and sample content, and to evaluate ... -
Local dynamics of a randomly pinned crack front: a numerical study
(Journal article; Peer reviewed, 2014)We investigate numerically the dynamics of crack propagation along a weak plane using a model consisting of fibers connecting a soft and a hard clamp. This bottom-up model has previously been shown to contain the competition ... -
Local mechanical properties and precipitation inhomogeneity in large-grained Al–Mg–Si alloy
(Peer reviewed; Journal article, 2022)Al–Mg–Si (6xxx series) alloys show excellent mechanical properties due to the precipitates formed during heat treatment. However, heat treatment of these alloys results in a soft precipitation free zone (PFZ) close to grain ... -
Local Resistivity Measurement on Multicrystalline Silicon
(Master thesis, 2012)Even though in the past the photovoltaic industry was dominated by single-crystalline silicon this days multi-crystalline silicon is consider to be on of the most promising material for application in low manufacturing ... -
Local statistics of immiscible and incompressible two-phase flow in porous media
(Peer reviewed; Journal article, 2023)We consider immiscible and incompressible two-phase flow in porous media under steady-state conditions using a dynamic pore network model. We focus on the fluctuations in a Representative Elementary Area (REA), with the ... -
Local structure of Ca2+ alginate hydrogels gelled via competitive ligand exchange and measured by small angle X-ray scattering
(Journal article; Peer reviewed, 2019)Alginates, being linear anionic co-polymers of 1,4-linked residues β-d-ManA (M) and α-l-GulA (G), are widely applied as hydrogel biomaterials due to their favourable in vivo biocompatibility and convenient ionic crosslinking. ... -
Local versus Equal Load Sharing in the Fiber Bundle Model
(Doctoral theses at NTNU;2019:368, Doctoral thesis, 2019)Fracture is a huge field of research that includes physics, geology, materials science, and engineering. Most approaches are very specialized, but what if we instead want to focus on the big picture to look for general ... -
Localised structuring of metal-semiconductor cores in silica clad fibres using laser-driven thermal gradients
(Peer reviewed; Journal article, 2022)The molten core drawing method allows scalable fabrication of novel core fibres with kilometre lengths. With metal and semiconducting components combined in a glass-clad fibre, CO2 laser irradiation was used to write ... -
Localization of Novel Chlorin Photosensitizers and Commercial Stains in the AY-27 Cell Model Using Advanced Fluorescence Microscopy
(Master thesis, 2021)Gjennom et samarbeid mellom Linköping Universitet og Norges Tekniske og Naturvitenskapelige Universitet, har flere nye kloriner for bruk i fotodynamisk terapi blitt syntetisert. To av disse klorinene, KA20-11H og KA20-11H-proto ... -
Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
(Peer reviewed; Journal article, 2020)Antiferromagnetic materials can host spin-waves with polarizations ranging from circular to linear depending on their magnetic anisotropies. Until now, only easy-axis anisotropy antiferromagnets with circularly polarized ... -
Long-ranged triplet supercurrent in a single in-plane ferromagnet with spin-orbit coupled contacts to superconductors
(Journal article; Peer reviewed, 2019)By converting conventional spin-singlet Cooper pairs to polarized spin-triplet pairs, it is possible to sustain long-ranged spin-polarized supercurrents flowing through strong ferromagnets. Obtaining such a conversion via ... -
Loss Measurements in Silicon Core Optical Waveguides
(Master thesis, 2013)Silicon core fibers have, because of their non-linear optical properties and transmission in the IR, recently been the focus of several different research groups. At NTNU, a new method for production of silicon fibers has ... -
Low Energy Electronic Properties of Graphene and Molybdenum Disulfide
(Master thesis, 2013)We investigate the electronic structure of two-dimensional (2D)materials with and without spin-orbit coupling. Initially, we use thetight-binding model to derive the electronic structure of graphene with staggered sublattice ...