Now showing items 162-181 of 1740

    • Backscattering in helical edge states from a magnetic impurity and Rashba disorder 

      Kimme, Lukas; Rosenow, Bernd; Brataas, Arne (Journal article; Peer reviewed, 2016)
      Transport by helical edge states of a quantum spin Hall insulator is experimentally characterized by a weakly temperature-dependent mean free path of a few microns and by reproducible conductance oscillations, challenging ...
    • Backward magnetostatic surface spin waves in coupled Co/FeNi bilayers 

      Song, Wenjie; Wang, Xiansi; Wang, Wenfeng; Jiang, Changjun; Wang, Xiangrong; Chai, Guozhi (Peer reviewed; Journal article, 2020)
      Spin waves (SWs) in coupled Co/FeNi bilayers are probed by the Brillouin light‐scattering technique. Two types of SWs, magnetostatic surface spin waves (MSSWs) and perpendicular standing SWs, are identified. The dispersion ...
    • Bacterial Microarrays by Microcontact Printing: Development of a Method for Immobilizing Live Bacteria on Microarrays 

      Ottesen, Vegar (Master thesis, 2014)
      Traditional microbiological experimental methods generally reveal population-wide statistics and are not capable of revealing variations between individual cells. In an effort to address this, a cheap, quick and easy means ...
    • Band gaps in jagged and straight graphene nanoribbons tunable by an external electric field 

      Saroka, Vasil; Batrakov, K.G.; Demin, V.A.; Chernozatonskii, L.A. (Journal article; Peer reviewed, 2015)
      Band gap control by an external field is useful in various optical, infrared and THz applications. However, widely tunable band gaps are still not practical due to a variety of reasons. Using the orthogonal tight-binding ...
    • Band-edge modification and mid-infrared absorption of co-deposited FexZn1-xS thin films 

      Molland, Nelly-Ann; Ghadyani, Zahra; Karhu, Eric Andrew; Poggio, Stefano; Nematollahi, Mohammadreza; Kildemo, Morten; Reenaas, Turid Worren; BelBruno, Joseph; Gibson, Ursula (Journal article; Peer reviewed, 2015)
      The bandgap of iron-doped ZnS has been reported by others to change significantly under the addition of a few atomic percent of iron, which would have significant implications for solar energy. Here, thin films of FexZn1-xS ...
    • Bandgap measurement of high refractive index materials by off-axis EELS 

      Vatanparast, Maryam (Journal article; Peer reviewed, 2017)
      In the present work Cs aberration corrected and monochromated scanning transmission electron microscopy electron energy loss spectroscopy (STEM-EELS) has been used to explore experimental set-ups that allow bandgaps of ...
    • Behaviour of the S1 and S2 Components of the Semidiurnal Tide in the MLT 

      Backer-Owe, Kåre (Master thesis, 2016)
      9 years (2000-2008) of wind data from a longitudinal chain of up to 10 Super Dual Auroral Radar Network (SuperDARN) radars spanning over 184 degrees in longitude and ranging in latitude from 51.4 - 65.7 degrees N is used ...
    • Beregninger med sikte på et DFT-basert reaktivt kraftfelt for strontium, bly, titan og oksygen. 

      Olsen, Kjetil Tesaker (Master thesis, 2009)
      Denne oppgaven tar utgangspunkt i et prosjekt som hadde til hensikt å studere groing av en PbTiO3-perovskittfilm på kubisk SrTiO3, hvor bruksområdene for dette inkluderer minnehåndtering i databrikker og lignende. Denne ...
    • Betti designature and elastic demultiple of multi-component seismic data 

      Holvik, Egil (Doktoravhandlinger ved NTNU, 1503-8181, Doctoral thesis, 2003)
      In this work I show that Bettis's theorem provides the theoretical basis for eliminating the physical response of the medium above the receiver surface (overburden) in the multi-component source, multi-component receiver ...
    • Bio-instructive materials for musculoskeletal regeneration 

      Gonzalez-Fernandez, Tomas; Sikorski, Pawel; Leach, J. Kent (Journal article; Peer reviewed, 2019)
      The prevalence and cost of disorders affecting the musculoskeletal system are predicted to rise significantly in the coming years due to the aging global population and the increase of associated risk factors. Despite being ...
    • Biochemical and Structural Characterization of Neocartilage Formed by Mesenchymal Stem Cells in Alginate Hydrogels 

      Magnus Østgård, Olderøy; Lilledahl, Magnus Borstad; Beckwith, Marianne; Melvik, Jan Egil; Reinholt, Finn P.; Sikorski, Pawel; Brinchmann, Jan E. (Journal article; Peer reviewed, 2014)
      A popular approach to make neocartilage in vitro is to immobilize cells with chondrogenic potential in hydrogels. However, functional cartilage cannot be obtained by control of cells only, as function of cartilage is largely ...
    • Biocomposites prepared by alkaline phosphatase mediated mineralization of alginate microbeads 

      Xie, Minli; Magnus Østgård, Olderøy; Zhang, Zhibing; Andreassen, Jens-Petter; Strand, Berit Løkensgard; Sikorski, Pawel (Journal article; Peer reviewed, 2012)
      This study set out to develop a biomimetic scaffold by incorporating osteoinductive hydroxyapatite (HA) particles into a porous alginate gel matrix via a cell-friendly pathway. Two types of alginate/calcium phosphate ...
    • Biophysical Studies of Light Sensitive Chromophores in Rat Glioma and Chinese Hamster Ovary Cancer Cells 

      Siksjø, Monica Kløvstad (Master thesis, 2015)
      The aim of this study was to investigate the biophysical properties of four light sensitive chromophores as a fluorescence dye for bioimaging applications, or photosensitizer in photodynamic therapy (PDT). Characterization ...
    • Bosons and Fermions in Curved Spacetime 

      Sjøstrøm, Dag-Morten (Master thesis, 2013)
      The Klein-Gordon and Dirac equations are formulated for a classical curved background.The equations are then expressed in Friedmann-Robertson-Walker Universe.Further the equations are solved in R×S3 spacetime. We present ...
    • Boundary artifact analysis in diffusion modelling with stochastic differential equations 

      Yip, Mauhing (Master thesis, 2019)
      In many research areas, it is common to model advection-diffusion problems with Lagrangian particle methods. This is the same as solving a stochastic differential equation, with drift and diffusion coefficients derived ...
    • Brittle to Quasi-Brittle Transitions in the Soft Clamp Fiber Bundle Model 

      Stormo, Arne (Doktoravhandlinger ved NTNU, 1503-8181; 2013:307, Doctoral thesis, 2013)
      In this thesis I describe a soft clamped quasi static fiber bundle model for two dimensional interfacial fracture. The soft clamps distribute the stress amongst the fibers through elastic forces. The model display three ...
    • Broad-band GVD Measurement of Specialty Fibers in mid-IR 

      Klimentov, Dmitry; Dvoyrin, Vladislav; Tolstik, Nikolai; Sorokina, Irina T (Chapter, 2012)
      We demonstrate a novel interferometeric setup for broad-band (>300nm) GVD measurements in short-length optical fibers in the mid-IR wavelength range using a superluminescent fiber source and investigate specialty fibers ...
    • Broadband Dispersion Measurement of ZBLAN, Germanate and Silica Fibers in MidIR 

      Klimentov, Dmitry; Tolstik, Nikolai; Dvoyrin, Vladislav; Kalashnikov, Valdimir L; Sorokina, Irina T (Journal article, 2012)
      We report the first ultra-broad band dispersion measurements in short-length ZBLAN, germanate and silica-based optical fibers in the near- and midIR wavelength ranges between 1.7 and 2.0 μm and from 2.3 to 2.45 μm, using ...
    • Broadband infrared and THz transmitting silicon core optical fiber 

      Sørgård, Trygve; Song, Seunghan; Vullum, Per Erik; Kores, Cristine; Mølster, Kjell Martin; Laurell, Fredrik; Hawkins, Thomas A.; Ballato, John; Österberg, Ulf Lennart; Gibson, Ursula (Peer reviewed; Journal article, 2020)
      Silicon waveguide structures are a viable alternative for the transmission of signals over a wide range of frequencies, and new fabrication methods are key to increased applications. In this work, THz transparency of ...
    • Broadband method for group velocity dispersion measurements in the mid-infrared 

      Klimentov, Dmitry; Tolstik, Nikolai; Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2011)
      A setup for broadband measurements of dispersion parameter in optical fibers based on the Mach–Zehnder interferometer is developed. Tm-doped fiber pumped at 1.61 μm was used as a source of broadband emission, that allowed ...