Browsing Institutt for fysikk by Title
Now showing items 2599-2618 of 2667
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Using Photon Entanglement as a Fundamental Resource in Experimental Physics
(Master thesis, 2019)I denne masteroppgaven beskriver jeg to ulike eksperimenter relatert til bruken av sammenfiltrede fotonpar for metrologi og kvantenøkkeldistribusjon. Innenfor metrologi undersøkes et oppsett for å synkronisere klokker ... -
Using STEM-DPC with a Conventional ADF Detector to Explore FIB Patterned Artificial Spin Ice Structures in Permalloy
(Master thesis, 2023)Vi befinner oss midt i en bemerkelsesverdig teknologisk revolusjon, der utviklingen innenfor områder som kunstig intelligens, robotikk og informasjonsteknologi er enorm. Som følge av dette er det et stort behov for mer ... -
Utregning av det elektromagnetiske feltet i Monte Carlo transport simulering
(Master thesis, 2017)Løsning av poissons ligning under monte carlo simulering av en CdHgTe fotoskred-diode. Vi har tatt i bruk ikke-uniform mesh med adaptivt grid og gjort noen elementære simuleringer av CMT dioden. -
Utvikling og implementering av et nytt spektroskopisk ellipsometer ved bruk av liquid crystal variable retaders
(Master thesis, 2012)Denne avhandlingen tar for seg design, utvikling og bygging av et nytt forslåttMueller matrise ellipsometer (MME) ved hjelp av fire flytende krystall variable re-tardere (LCVR) som hovedkomponenter. Instrumentet har blitt ... -
UV-doser til psoriasispasienter og behandlingseffekt i løpet av tre ukers klimabehandling på Gran Canaria
(Master thesis, 2011)Psoriasis er en kronisk, inflammatorisk hudsykdom som gir tykke skjelldannelser på en rød hudoverflate. Sykdommen rammer 2-3% av den europeiske befolkningen. Ultrafiolett (UV) stråling som bruk i behandling av psoriasis ... -
Vacancy and solute co-segregated η1 interface in over-aged Al-Zn-Mg alloys
(Journal article; Peer reviewed, 2021)We present a combined first-principles and scanning transmission electron microscopy (STEM) study of the η1/Al interfaces in an over-aged Al-Zn-Mg alloy. As one of the major η-MgZn2 precipitate types, η1 tends to form ... -
Vacuum Polarization Instead of “Dark Matter” in a Galaxy
(Journal article; Peer reviewed, 2022)We considered a vacuum polarization inside a galaxy in the eikonal approximation and found that two possible types of polarization exist. The first type is described by the equation of state p=ρ/3, similar to radiation. ... -
Vacuum ultraviolet optical properties of GaSb determined by synchrotron rotating analyzer ellipsometry: applications in nanopillars and plasmonics
(Peer reviewed; Journal article, 2023)The vacuum ultraviolet (VUV) optical properties in the range 4 eV to 15 eV of GaSb have been determined by rotating analyzer ellipsometry (RAE) using synchrotron light. The localized surface plasmon resonances (LSPRs) and ... -
Valence states in sub-monolayer samarium films on graphene supported on ruthenium and nickel
(Master thesis, 2023)Denne oppgaven undersøker overflateegenskapene til enkeltsubstrater av overgangsmetall Ru(001) og Ni(111) mettet med grafendopet Samarium(Sm) monolag av sjeldne jordarter. Fire komplementære overflatevitenskapsteknikker ... -
Validating the algorithms AAA and Acuros for calculation of dose from flattening filter free beams in heterogenous tissue - Application to stereotactic radiotherapy of lung tumors
(Master thesis, 2015)In radiation therapy of cancer, modeling the dose to the patient is very important. Several computational algorithms are available, where some model dose in heterogeneous tissue better than others. After implementation of ... -
Validating the laminar population analysis for decomposing cortical multielectrode data on a model of the mouse primary visual cortex
(Master thesis, 2019)Teknologisk innovasjon har ført til en stor økning i mengden nevrale data som kan innhentes på en gang, noe som har avlet et behov for nye metoder for å analysere disse store, multidimensjonale datasettene. Laminære ... -
Validation of middle-atmospheric campaign-based water vapour measured by the ground-based microwave radiometer MIAWARA-C
(Journal article; Peer reviewed, 2013)Abstract. Middle atmospheric water vapour can be used as a tracer for dynamical processes. It is mainly measured by satellite instruments and ground-based microwave radiometers. Ground-based instruments capable of measuring ... -
Validation of SSUSI-derived auroral electron densities: comparisons to EISCAT data
(Peer reviewed; Journal article, 2021)The coupling of the atmosphere to the space environment has become recognized as an important driver of atmospheric chemistry and dynamics. In order to quantify the effects of particle precipitation on the atmosphere, ... -
Van der Waals interactions: Corrections from radiation in fluids
(Journal article; Peer reviewed, 2013) -
Vapor deposited Cr-doped ZnS thin films: Towards optically pumped mid-infrared waveguide lasers
(Journal article; Peer reviewed, 2016)Compact, affordable mid-IR lasers require the development of gain materials in waveguide form. We report on the high vacuum deposition of Cr:ZnS films with concentration ranging from 1018-1020 dopants/cm3 . At low ... -
Variability of the Quasi Two-Day Wave in the Mesosphere
(Master thesis, 2013)The Quasi-Two-Day-Wave (QTDW) is examined through analysis of data given by the SKiYMET-radar at Dragvoll, Trondheim (63◦N,10◦E). Through spectral analysis the occurrence and generation mechanisms of the different wave ... -
Variation of elastic energy shows reliable signal of upcoming catastrophic failure
(Journal article; Peer reviewed, 2019)We consider the Equal-Load-Sharing Fiber Bundle Model as a model for composite materials under stress and derive elastic energy and damage energy as a function of strain. With gradual increase of stress (or strain) the ... -
Varying oxygen coverage on Cu55 and its effect on CO oxidation
(Journal article; Peer reviewed, 2019)Adsorption of molecular oxygen on a Cu55 cluster and the resulting oxidation effects have been investigated by spin-polarized density functional theory (DFT). The optimal structure for each Cu55O2N (N = 1–20) complex has ...