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Viscous Phenomena and Entropy Production in the Early Universe
(Doctoral theses at NTNU;2017:197, Doctoral thesis, 2017)During the very first fraction of a second after the Big Bang, the Universe were populated by all the particles in the Standard Model of elementary particles: From the massive top quark to the massless photons and gluons. ... -
Visualizing Ferroelectric Domain Structures in ErMnO3 and Pb5Ge3O11 by Electron Microscopy
(Master thesis, 2019)Ferroelektriske domenevegger har nylig tiltrukket økende oppmerksomhet som nye kandidater for funksjonelle 2D-systemer. Disse atomskarpe grensesnittene som kan flyttes, opprettes og fjernes med elektriske felt, kan brukes ... -
VMAT for small cell lung cancer
(Master thesis, 2015)Limited stage small cell lung cancer (SCLC-LS) is an aggressive cancer form affecting a relatively small group of patients. The prognosis for these patients is poor, and those who are treated with radiotherapy often develop ... -
Voltage control of superconducting exchange interaction and anomalous Josephson effect
(Journal article; Peer reviewed, 2019)Exerting control over the magnetic exchange interaction in heterostructures is of both basic interest and has potential for use in spin-based applications relying on quantum effects. We show that the sign of the exchange ... -
Voltage tuning of spin and charge supercurrents in a spin-active Josephson Junction
(Master thesis, 2018)Charge and spin-supercurrents in a spin-active Josephson junction is investigated through the quasiclassical theory of superconductivity. Analytical work has been performed and numerical results are presented, showing that ... -
Voltage-induced thin-film superconductivity in high magnetic fields
(Journal article; Peer reviewed, 2018)We predict that superconductivity in mesoscopic thin films can be stabilized in high magnetic fields if the superconductor is driven out of equilibrium by a DC voltage bias. For realistic material parameters and temperatures, ... -
Vortex spin valve on a topological insulator
(Journal article; Peer reviewed, 2018)Spin-valve structures are usually associated with the ability to modify the resistance of electrical currents. We here demonstrate a profoundly different effect of a spin-valve. In combination with a topological insulator ... -
Walker Breakdown in Magnon-Induced Ferromagnetic Domain Wall Motion
(Master thesis, 2015)We derive for the first time the collective coordinate equations for magnon-driven domain wall motion in ferromagnets from the Landau-Lifshitz-Gilbert equation. By performing a consistent calculation to second order we are ... -
Water waves with compactly supported vorticity: A functional-analytic approach to bifurcation theory and the mathematical theory of traveling water waves
(Master thesis, 2014)We study the mathematical theory of water waves. Local bifurcation theory is also discussed, including the Crandall-Rabinowitz theorem; an abstract theorem used to establish the presence of bifurcation points in the zero ... -
Watt-level Kerr-Lens Mode-Locked Cr:ZnS Laser at 2.4 μm
(Chapter, 2013)Power scaling of Kerr-lens mode-locked Cr:ZnS femtosecond oscillator allows reaching 1 W output power and pulse energies over 8 nJ. Soliton and chirped-pulse regimes result in 68 fs and 0.8-2 ps pulses, respectively. -
Wave scattering and transmission from penetrable self-affine surfaces
(Master thesis, 2009) -
Wave scattering theory applied to inversion and design
(Doctoral theses at NTNU;2018:310, Doctoral thesis, 2018)The scattering of waves from objects can be used as a tool for both characterization and manipulation. The way waves interact and scatter from objects can give us information about their structure and composition. Additionally, ... -
Wavelength conversion and supercontinuum generation in silicon optical fibers
(Journal article, 2018)This paper describes the state of the art in wavelength conversion and supercontinuum generation using glass-clad silicon core optical fibers. Such semiconductor fibers have enjoyed considerable attention due to their ... -
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 ... -
“We learn it [mathematics] at school so one thinks that one will use it …”: Learners’ beliefs about relevance and importance of learning mathematics.
(Journal article; Peer reviewed, 2023)Denne artikkelen viser at når skoleledere og lærere samhandler i et regionalt utviklingsprosjekt som forutsetter bruk av eksterne kunnskapsressurser som kartleggingsdata og kompetansepakker, forholder de seg til ... -
What causes the mid-winter cooling?
(Master thesis, 2016)This thesis investigated the influence and conditions of vertical propagation of planetary waves on the mid-winter cooling in the southern hemispheric polar meso- sphere. MERRA zonal wind data was used to extract planetary ... -
What do quantum computing students need to know about quantum physics?
(Journal article; Peer reviewed, 2022) -
Wide field-of-view Fourier Ptychography microscopy based on Fresnel propagation scheme
(Peer reviewed; Journal article, 2022)Fourier ptychographic microscopy (FPM) is a computational imaging method that gives a significantly increased space-bandwidth product, in practice high resolution combined with a wide field of view. In this article, we ... -
Winds and tides in the mid-latitude southern hemisphere upper mesosphere recorded with the Falkland Islands SuperDARN radar
(Journal article; Peer reviewed, 2011)Meteor wind data from the first year of operation of the Falkland Islands SuperDARN radar (52 S, 59 W) are used to characterize the atmospheric tides and background winds in the upper mesosphere above the South Atlantic. ...