Now showing items 1-20 of 377

  • Tønsberg, Einar (Master thesis / Hovedoppgave, 1937)
  • Universitetet i Oslo, Det matematisk-naturvitenskapelige fakultet (Series / Serietittel, 2006)
  • Børseth, Thomas J. Moe; Tuomisto, F; Christensen, Jens S.; Monakhov, Edouard; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2008)
    The role of vacancy clustering and acceptor activation on resistivity evolution in N ion-implanted n-type hydrothermally grown bulk ZnO has been investigated by positron annihilation spectroscopy, resistivity measurements, ...
  • Dong, Yufeng; Tuomisto, F; Svensson, Bengt Gunnar; Kuznetsov, Andrej; Brillson, Leonard J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)
    We have used depth-resolved cathodoluminescence, positron annihilation, and surface photovoltage spectroscopies to determine the energy levels of Zn vacancies and vacancy clusters in bulk ZnO crystals. Doppler broadening-measured ...
  • Kilpelainen, S; Kuitunen, K; Tuomisto, F; Slotte, J; Radamson, H.H.; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)
    Thermal evolution of vacancy complexes was studied in P-doped ([P]=1018 cm−3) proton irradiated Si1−xGex with Ge contents of 10%, 20%, and 30% in the range of 250–350 °C using positron annihilation spectroscopy. The radiation ...
  • Venkatachalapathy, Vishnukanthan; Galeckas, Augustinas; Zubiaga, Asier; Tuomisto, Filip; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)
    The nature of intrinsic defects in ZnO films grown by metal organic vapor phase epitaxy was studied by positron annihilation and photoluminescence spectroscopy techniques. The supply of Zn and O during the film synthesis ...
  • Van den Born, Erwin; Vågbø, Cathrine Broberg; Songe-Møller, Lene; Leihne, VIbeke; Lien, Guro Flor; Leszczynska, G; Malkiewicz, A; Krokan, Hans Einar; Kirpekar, F; Klungland, Arne; Falnes, Pål (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
  • Leihne, VIbeke; Kirpekar, F; Vågbø, Cathrine Broberg; Van den Born, Erwin; Krokan, Hans Einar; Grini, Paul Eivind; Meza, Trine Johansen; Falnes, Pål (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Uridine at the wobble position of tRNA is usually modified, and modification is required for accurate and efficient protein translation. In eukaryotes, wobble uridines are modified into 5-methoxycarbonylmethyluridine (mcm ...
  • Shirzadi, Reza; Andersen, Ellen Dehnes; Bjerkan, Katrine; Gloeckle, Barbara M; Heese, Maren; Ungru, Alexander; Winge, Per; Koncz, C; Aalen, Reidunn B.; Schnittger, Arp; Grini, Paul Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Seed development in angiosperms is dependent on the interplay among different transcriptional programs operating in the embryo, the endosperm, and the maternally-derived seed coat. In angiosperms, the embryo and the endosperm ...
  • Venkatachalapathy, Vishnukanthan; Galeckas, Augustinas; Trunk, Mareike; Zhang, Tianchong; Azarov, Alexander; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    A phenomenon of wurtzite (w), zincblende (zb), and rock-salt (rs) phase separation was investigated in ZnCdO films having Cd contents in the range of 0%–60% settling a discussion on the phase stability issues in ZnCdO. ...
  • Johansen, Klaus Magnus H; Zubiaga, Asier; Tuomisto, Filip; Monakhov, Edouard; Kuznetsov, Andrej; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    The interaction of hydrogen (H) with lithium (Li) and zinc vacancies (VZn) in hydrothermally grown n-type zinc oxide (ZnO) has been investigated by positron annihilation spectroscopy (PAS) and secondary ion mass spectrometry. ...
  • Azarov, Alexander; Hallén, Anders; Du, Xiaolong; Liu, Z. L.; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Thermal stability of originally single crystalline wurtzite MgxZn1−xO (x ⩽ 0.3) films implanted at room temperature with 166Er ions is studied by a combination of Rutherford backscattering spectrometry, time-of-flight ...
  • Zhang, Tianchong; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Single-phase rock-salt CdZnO films were synthesized on r-plane sapphire substrates by metal–organic chemical vapor deposition. Evolutions in growth orientations were investigated in these films as a function of Zn content ...
  • Meza, Trine Johansen; Moen, Marivi; Vågbø, Cathrine Broberg; Krokan, Hans Einar; Klungland, Arne; Grini, Paul Eivind; Falnes, Pål (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    The Escherichia coli AlkB protein (EcAlkB) is a DNA repair enzyme which reverses methylation damage such as 1-methyladenine (1-meA) and 3-methylcytosine (3-meC). The mammalian AlkB homologues ALKBH2 and ALKBH3 display ...
  • Long, Ethan Schuyler; Azarov, Alexander; Kløw, Frode; Galeckas, Augustinas; Kuznetsov, Andrej; Diplas, Spyridon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    Several fundamental aspects of the oxidation-induced redistribution of Ge in thin films of SiGe are studied. This includes the incorporation of Ge into the oxide and the formation of what is alternatively referred to as ...
  • Løvlie, Lars Sundnes; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    High-purity epitaxial layers of n-type 4H-SiC have been implanted with 4.3-MeV Si ions to a dose of 3 × 108 cm−2 and then subjected to dry isothermal oxidation at temperatures between 1050 and 1175 °C. Analysis of the ...
  • Løvlie, Lars Sundnes; Vines, Lasse; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    The lateral distributions of intrinsic point defects in n-type (0001) 4H-SiC have been investigated following room temperature irradiation with a focused beam of 10 keV protons. Laterally resolved deep level transient ...
  • Knutsen, Knut Erik; Galeckas, Augustinas; Zubiaga, Asier; Tuomisto, Filip; Farlow, Gary C.; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    By combining results from positron annihilation and photoluminescence spectroscopy with data from Hall effect measurements, the characteristic deep level emission centered at ∼1.75 eV and exhibiting an activation energy ...
  • Cella, Tommaso; Orten, Pål; Hjelmstad, Jens (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    We show a way to optimize the capacity and at the same time achieve high coverage in LOS for a mm-wave system indoor. We optimize MIMO with regard to maximum Shannon capacity for a pure LOS channel. We describe the general ...
  • Chan, K.-S.; Vines, Lasse; Johansen, Klaus Magnus H; Monakhov, Edouard; Ye, J.D; Parkinson, P; Jagadish, C; Svensson, Bengt Gunnar; Wong-Leung, J (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    We studied the structural properties, defect formation, and thermal stability of H in hydrothermally grown ZnO single crystals implanted with H- dose ranging from 2.5×1016 to 1×1017 cm−2. H implantation is found to create ...