Browsing Institutt for fysikk by Title
Now showing items 1334-1353 of 2677
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Manipulating Spins in Antiferromagnets with External Forces
(Doctoral thesis at NTNU;2016:114, Doctoral thesis, 2016)This thesis presents five papers on theoretical spintronics. Four of the papers describe antiferromagnets and the interactions between the magnetic order parameter and external forces induced by charge currents, spin ... -
Manipulating superconductivity in magnetic nanostructures in and out of equilibrium
(Doctoral theses at NTNU;2019:57, Doctoral thesis, 2019)We consider nanostructures that are constructed from superconducting, ferromagnetic, and spin–orbit-coupled materials. These structures are analyzed both theoretically and numerically, under both equilibrium and nonequilibrium ... -
Many-body effects on superconductivity mediated by double-magnon processes in altermagnets
(Journal article; Peer reviewed, 2024)Altermagnets exhibit a large electron spin splitting which can be understood as a result of strong coupling between itinerant electrons and localized spins. We consider superconductivity due to electron-magnon scattering, ... -
Mapping Orientation Distribution of Talc Particles in Polypropylene by Small-Angle X-ray Scattering Tomography
(Master thesis, 2013)Small-angle X-ray scattering tomography has for the first time been used toinvestigate the spatially resolved orientation distribution of talc particles in asample of injection molded isotactic polypropylene, where the ... -
Mapping the chemistry within, and the strain around, Al-alloy precipitates at atomic resolution by multi-frame scanning transmission electron microscopy
(Journal article; Peer reviewed, 2017)Al-Mg-Si(-Cu)alloys, used primarily in the transportation sector, are strengthened by nano-sized precipitate particles. There is a plethora of possible phases, depending onwhich elements are added to the alloy ... -
Markers of mitochondrial metabolism in tumor hypoxia, systemic inflammation, and adverse outcome of rectal cancer
(Journal article; Peer reviewed, 2019)Tumor hypoxia contributes to therapy resistance and metastatic progression of locally advanced rectal cancer (LARC). We postulated that the tumor mitochondrial metabolism, manifested by reactive oxygen species (ROS) and ... -
Masteroppgave - A Predictive Model for Biological Range Shift in Proton Therapy
(Master thesis, 2019)Protonterapi er en metode innenfor str˚alebehandling for kreft som har blitt tatt i bruk i mange land over hele verden i løpet av de siste ti˚arene. Et argument for ˚a bruke protonterapi er at protonene har en bedre ... -
Material properties of tapered crystalline silicon core fibers
(Journal article; Peer reviewed, 2017)Crystalline silicon optical fibers are emerging as a promising platform for a wide range of optoelectronic applications. Here we report a crystallographic study of the material properties within silicon fibers that have ... -
Material properties particularly suited to be measured with helium scattering: selected examples from 2D materials, van der Waals heterostructures, glassy materials, catalytic substrates, topological insulators and superconducting radio frequency materials
(Peer reviewed; Journal article, 2021)Helium Atom Scattering (HAS) and Helium Spin-Echo scattering (HeSE), together helium scattering, are well established, but non-commercial surface science techniques. They are characterised by the beam inertness and very ... -
Matlab Based Music Analyses of Piano Recordings: An Attempt to Connect Quantitative Acoustical Parameters to Subjective Performance Intention
(Master thesis, 2014)Timbre is a well known concept in music and denotes adjectives describing a sound or sound sensation. All instruments possess a characteristic timbre making it possible to distinguish one type of instrument from another. ... -
Matrix-Free Conjugate Gradient Methods for Finite Element Simulations on GPUs
(Master thesis, 2010)A block-structured approach for solving 2-dimensional finite element approximations of the Poisson equation on graphics processing units(GPUs) is developed. Linear triangular elements are used, and a matrix-free version ... -
Matter in extreme conditions: Resumming QCD thermodynamics
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:145, Doctoral thesis, 2011) -
Maximum Entropy and Maximum Entropy Production in Macroecology
(Master thesis, 2011)The Maximum Entropy Theory of Ecology (METE), developed by John Harte, presents an entirely new method of making inferences in ecology. The method is based on the established mathematical procedure of Maximum Information ... -
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 ... -
Måling og modellering av vanntransportegenskaper til svelleband til høyspenningskabler
(Master thesis, 2011)Vanntrevekst er en av de viktigste grunnene til elektrisk havari i høyspenningskabler.Vanntrær begynner å vokse når den relative fukten(RH) i kabelisolasjonenoverstiger 70 %RH. Det er derfor viktig å holde en lav fuktigheti ... -
Målinger i troposfæren med ALOMAR RMR lidar: Temperaturmålinger med bruk av rotasjons Raman spektrum og bestemmelse av dens optiske overlap.
(Master thesis, 2019)Alomar troposfæriske lidar var ikke operativ grunnet en feil med laseren og trengte en erstatter. Den fikk en ny laser under skrivingen av denne oppgaven. I denne oppgaven ble det prøvd en midlertidig løsning hvor RMR-lidaren ... -
MBE-grown Cr:ZnS Thin Film Laser Media
(Chapter, 2016)We report results of spectroscopic analysis of the first first laser-quality MBE-grown Cr:ZnS films. Comparison of spectral-luminescent properties with bulk Cr:ZnS indicates their good laser properties, opening the way ... -
Meaning Making Through Use of Interactive Whiteboards During Physics Group Work: A Case Study from Engineering Education
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:148, Doctoral thesis, 2014)This thesis investigates physics group work among engineering students. A case study is presented, in which first-year engineering students attended physics group work as part of a basic physics course. Each student group ... -
Measurement and Models of Solar Irradiance
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:152, Doctoral thesis, 2006)Solar radiation is the main driving force for the Earth’s weather and climate. It is also the prime source for renewable energy technologies.Solar energy technologies can satisfy the current energy demand and at the same ...