Browsing Institutt for fysikk by Title
Now showing items 1240-1259 of 2712
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Investigation of Methods for 2D Strain Imaging of Brain Tumors
(Master thesis, 2014)Intraoperative ultrasound strain imaging displays brain tissue stiffness rather than difference in mass density as regular B-mode imaging. A glioma (the most common type of brain tumor) has a tendency of infiltrating ... -
Investigation of Neural Network Auto Encoders as Means of Initialisation
(Master thesis, 2021)Initialisering av vekter i kunstige nevrale nettverk har fått mye oppmerksomhet i litteratur. Det kan ha en signifikant effekt på konvergensrate, varians, generalisering og ytelse. Til tross for dets viktighet, er ... -
Investigation of Raman scattering phenomena in the development of mid-IR ultra-short laser pulses
(Master thesis, 2015)In this thesis both a raman spectrometer and a dispersion measurement setup for fibers was designed, built and automatized. Furthermore several nonlinear phenomena were researched and with two different approaches simulated. ... -
Investigation of some compounds and gold nanoparticles for photodynamic therapy
(Master thesis, 2018)In this thesis several chemical compounds for possible use as photosensitizers (PS) in photodynamic therapy (PDT) have been investigated. First a photophysical characterization was performed using different spectroscopic ... -
Investigation of Spin Coating Cerium-Doped Hydroxyapatite Thin Films with Antifungal Properties
(Peer reviewed; Journal article, 2021)In this study, the cerium-doped hydroxyapatite (Ca10−xCex(PO4)6(OH)2 with xCe = 0.1, 10Ce-HAp) coatings obtained by the spin coating method were presented for the first time. The stability of the 10Ce-HAp suspension particles ... -
Investigation of Transfection Using Silica-coated Cupric Oxide Nanowires
(Master thesis, 2013)One-dimensional high aspect ratio nanostructures grown from a copper foil are considered for intracellular delivery of bioactive molecules, such as drugs and genetic material. The cupric oxide (CuO) nanowires are coated ... -
Investigation of Unoccupied Electronic Bands in Graphene
(Master thesis, 2018)In recent years, a lot attention has been paid to various two-dimensional materials due to their unique properties stemming from the spacial refinement of one of the material's dimensions. Regardless of the incredible ... -
Iron oxide nanocrystals clustered in oil-in-water nanoemulsions: Preparation, characterization, and transverse relaxivities
(Master thesis, 2015)Iron oxide nanocrystals (IONCs) have attracted extensive interest due to their high magnetization that efficiently decreases the transverse relaxation times of water protons. The increase in their transverse relaxivities ... -
Iron-Mediated Growth of Graphene on SiC for Radiation Detection
(Master thesis, 2017)A proposed radiation sensor exploits graphene's high electron mobility and sensitivity to miniscule electric fields to attain a novel approach for radiation detection. Realizing such a sensor is contingent on controlled ... -
Is the doped MoS2 basal plane an efficient hydrogen evolution catalyst? Calculations of voltage-dependent activation energy
(Peer reviewed; Journal article, 2023)Transition metal dichalcogenides are cheap and earth-abundant candidates for the replacement of precious metals as catalyst materials. Experimental measurements of the hydrogen evolution reaction (HER), for example, have ... -
Jamming-flow transitions of confined self-propelled rods
(Master thesis, 2021)Denne oppgaven presenterer en numerisk undersøkelse av egenskapene til en hybridmodell av selvdrevne stav-aktige partikler i 2D som vekselvirker via apolar vinkeltilpasning og myk frastøtning. Såkalte aktive partikler ... -
Josephson effect in graphene bilayers with adjustable relative displacement
(Peer reviewed; Journal article, 2020)The Josephson current is investigated in a superconducting graphene bilayer where pristine graphene sheets can make in-plane or out-of-plane displacements with respect to each other. The superconductivity can be of an ... -
Josephson effect in S/F/S junctions: Spin bandwidth asymmetry versus Stoner exchange
(Journal article; Peer reviewed, 2011)We analyze the dc Josephson effect in a ballistic superconductor/ferromagnet/superconductor junction by means of the Bogoliubov–de Gennes equations in the quasiclassical Andreev approximation. We consider the possibility ... -
Josephson effect through magnetic skyrmions
(Journal article; Peer reviewed, 2015)We discover that the multiple degrees of freedom associated with magnetic skyrmions—size, position, and helicity—can all be used to control the Josephson effect and 0 − π transitions occurring in superconductor/magnetic ... -
Jurkatcellers følsomhet for høye temperaturer: En flowcytometriundersøkelse
(Master thesis, 2008)Målet med denne oppgaven var blant annet å nærmere studere effekten av varmebehandling av cellene innenfor intervallet 37-50°C. Dette ble gjort ved å la cellene ligge 30 min i vannbad med den aktuelle temperaturen, ta ut ... -
K-nearest neighbour methods for value of information in petroleum decision making
(Master thesis, 2014)In this thesis a parametric and non-parametric model are proposed for the study of value of information regarding decision making in petroleum industry. More specifically, a Gaussian method is introduced and analysed for ... -
Kalman filters applied to target tracking with multiple sensors
(Master thesis, 2013)The objective of this master thesis is to look at an air surveillance system with the ability to integrate observations from multiple radars. A fictional plane is detected by the system, and the goal is to estimate the ... -
"Kan du velge fysikk uten å vite hva det er?": En undersøkelse av fysikkens posisjon i naturfaget.
(Master thesis, 2009)Denne masteroppgaven tar for seg naturfaget på ungdomstrinnet og første klasse på videregående skole, med spesielt fokus på fysikkfagets stilling innen dette faget. Oppgaven tar for seg naturfaget på tre nivåer; ... -
” Kan du velge fysikk uten å vite hva det er?”: en undersøkelse av fysikkens posisjon i naturfaget
(Master thesis, 2009)Denne masteroppgaven tar for seg naturfaget på ungdomstrinnet og første klasse på videregående skole, med spesielt fokus på fysikkfagets stilling innen dette faget. Oppgaven tar for seg naturfaget på tre nivåer; Formål, ... -
Karakterisering av BTO tynnfilmer ved elektrondiffraksjon
(Master thesis, 2019)Ferroelektriske tynnfilmer av bariumtitanat (BTO) produsert ved kjemisk løsningsavsetning på substrater av strontiumtitanat (STO) har vist en forbedret polarisasjon i planet til film-substrat grenseflaten. En domenestruktur ...