Browsing Institutt for fysikk by Issue Date

Now showing items 181-200 of 2677

    • Applikasjon av fokusert ionestråle (FIB) og skanning elektronmikroskop (SEM) for karakterisering av vev, celler og biomaterialer. 

      Ervik, Ken Roger (Master thesis, 2011)
      Dette prosjektet har den intensjon å utforske karakteriseringsmuligheter med fokusert ionestråle (FIB) kombinert med skanning elektronmikroskop (SEM). Aspekter ved prøvepreparering, bilde prosessering har blitt diskutert. ...

    • After-gate attack on a quantum cryptosystem 

      Wiechers, Carlos; Lydersen, Lars Vincent Van de Wiel; Wittmann, Christoffer; Elser, Dominique; Skaar, Johannes; Marquardt, Christoph; Makarov, Vadim; Leuchs, Gerd (Journal article; Peer reviewed, 2011)
      We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside ...

    • Assessment of sensitivity, degradation and treatment response in two breast cancer xenograft models using HR MAS MRS 

      Flatabø, Silje (Master thesis, 2011)
      Breast cancer is the most frequently form of cancer in women and new methods fordiagnostics and monitoring of treatment are desired. High resolution magic angle spin-ning magnetic resonance spectroscopy (HR MAS MRS) has ...

    • Scanning transmission electron microscopy studies of precipitation in Al-Mg-Ge alloys 

      Bjørge, Ruben (Doktoravhandlinger ved NTNU, 1503-8181; 2011:234, Doctoral thesis, 2011)
      Precipitation in three Al-Mg-Ge(-Si-Cu) alloys has been investigated using transmission electron microscopy. The alloy compositions were chosen to be similar to previously studied Al-Mg-Si(-Cu) alloys to facilitate direct ...

    • Experimental Mueller Matrix Images of Liquid Crystalline Domains in Synthetic Clay Dispersions. 

      Theisen, Erik Bjørge (Master thesis, 2011)
      This report is a study of how polarized light can improve our understandings of physical phenomena, such as local organization of anisometric nanoparticles dispersed in a liquid.The first part of the thesis considers the ...

    • Three-loop HTL QCD thermodynamics 

      Andersen, Jens Oluf; Leganger, Lars Erlend; Strickland, Michael; Su, Nan (Journal article; Peer reviewed, 2011)
      The hard-thermal-loop perturbation theory (HTLpt) framework is used to calculate the thermodynamic functions of a quark-gluon plasma to three-loop order. This is the highest order accessible by finite temperature perturbation ...

    • Chirped dissipative soliton absorption spectroscopy 

      Kalashnikov, Vladimir L; Sorokin, Evgeni; Sorokina, Irina T (Journal article; Peer reviewed, 2011)
      We present analytical theory of dissipative soliton absorption spectroscopy. A dissipative soliton formed in an all-normal-dispersion oscillator with a narrowband intracavity absorber acquires spectral features that follow ...

    • Experimental Studies of Finger and Fracture Instabilities in Clays Throughout the Sol-Gel Transition 

      Cappelen, Beate Ulrikke Krefting (Master thesis, 2011)
      This report concerns preliminary studies of fingering and fracturing in gelling materials, with the aim of identifying how the phenomena of fingering transitions into fracturing as the breaking medium gradually becomes ...

    • Lévy Processes and Path Integral Methods with Applications in the Energy Markets 

      Oshaug, Christian A. J. (Master thesis, 2011)
      The objective of this thesis was to explore methods for valuation of derivatives in energy markets. One aim was to determine whether the Normal inverse Gaussian distributions would be better suited for modelling energy ...

    • Optical coatings for enhancement of the longitudinal Magneto-optic Kerr Effect from magnetic ultra-thin films 

      Tveten, Erlend Grytli (Master thesis, 2011)
      The effect of optical coatings on the longitudinal magneto-optic Kerr effect response from 10 nm thin films of permalloy (Ni84Fe16) has been studied. Enhancement of the magneto-optic Kerr effect signal contrast of a factor ...

    • Symmetry and mass degeneration in multi-Higgs-doublet models 

      Olaussen, Kåre; Osland, Per; Solberg, Marius Aase (Journal article; Peer reviewed, 2011)
      We investigate possible symmetry properties of the scalar sector of Multi-Higgs-Doublet Models, and, to some extent, the generalization of such models to gauge groups other than SU(2) L  × U(1) Y . In models with C (charge ...

    • Majorana fermions in spin-orbit-coupled ferromagnetic Josephson junctions 

      Black-Schaffer, Annica; Linder, Jacob (Journal article; Peer reviewed, 2011)
      We study all possible Majorana modes in two-dimensional spin-orbit-coupled ferromagnetic superconductor–normal state–superconductor (SNS) Josephson junctions and propose experiments to detect them. With the S region in a ...

    • Partial Discharges on an Epoxy Surface due to Water Droplets 

      Grieg, Bernt Milne (Master thesis, 2011)
      Offshore wind turbines are exposed to a very harsh environment and can sustain significant damage during operation. In this thesis work, the possibilities of partial discharges in an insulation system of an offshore wind ...

    • CFD Study of a 10 MW Offshore Horizontal Axis Wind Turbine Blade 

      Tande, Jørgen Jensen (Master thesis, 2011)
      This Master thesis is a study of wind turbine aerodynamics on a 10 MW offshore wind turbine blade with a Computational Fluid Dynamics, CFD, approach.The objectives for the thesis were, (i) make a Computer Aided Design, ...

    • Development of a spectrometer system to remotely sense mesospheric temperature. 

      Berge, Frank Terje (Master thesis, 2011)
      At nighttime the strongest source of radiation is the hydroxyl night glow. By measuringthe different lines within a band it is possible to calculate the temperature of the mesosphere more than 85km above ground. In order ...

    • Effects of Cyclic Hypoxia in Tumor Tissue. 

      Acosta Roa, Ana María (Master thesis, 2011)
      The presence of hypoxia in tumors has been related to poor prognosis and low overall survival. In particular, cyclic hypoxia has been related to higher metastatic potential. Hence, it is important to study the mechanisms ...

    • Characterization of GaN:ZnO p-n junctions 

      Knutsen, Hege (Master thesis, 2011)
      In this master thesis, thin lms of ZnO doped with various cobalt concentra-tions have been grown using Pulsed Laser Deposition (PLD). This growthtechnique is preferred because it is able to grow thin lms from a targetmaterial ...

    • Plasmonics for Light Trapping in Thin Silicon Solar Cells 

      Fosli, Carl Huseby (Master thesis, 2011)
      The cost of the wafer represents a significant share of the cost of a solar module. One way to reduce it is to reduce the wafer thickness. However, this leads to increases in the transmission of the sunlight through the ...

    • Supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers 

      Linder, Jacob; Yokohama, Takehito (Journal article; Peer reviewed, 2011)
      We investigate supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers and demonstrate a variety of effects by solving numerically the Landau-Lifshitz-Gilbert equation. ...

    • Tm3+-doped CW fiber laser based on a highly GeO2-doped dispersion-shifted fiber 

      Dvoyrin, Vladislav; Sorokina, Irina T; Mashinsky, Valery M.; Ischakova, Lyudmila D.; Dianov, Evgenii M; Kalashnikov, Valdimir L; Yashkov, Mikhail V.; Khopin, Vladimir F.; Guryanov, Aleksey N. (Journal article; Peer reviewed, 2011)
      A novel all-fiber laser based on a highly GeO2-doped dispersion-shifted Tm-codoped fiber, pumped at 1.56 µm wavelength and lasing at 1.862 µm wavelength with a slope efficiency up to 37% was demonstrated. The single-mode ...