Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 232-251 of 838

  • Electrical conductivity of In2O3 and Ga2O3 after low temperature ion irradiation; Implications for instrinsic defect formation and charge neutrality level 
    Vines, Lasse; Bhoodoo, Chidanand; Von Wenckstern, H; Grundmann, M (Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)
    The evolution of sheet resistance of n-type In2O3 and Ga2O3 exposed to bombardment with MeV 12C and 28Si ions at 35 K is studied in situ. While the sheet resistance of Ga2O3 increased by more than eight orders of magnitude ...
  • Electrical transport in a molten-solid V2O5–ZrV2O7 composite 
    Emhjellen, Linn Katinka Susanne Shi; Strandbakke, Ragnar; Haugsrud, Reidar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Molten-solid composite oxides are candidates as oxygen transport membranes (OTMs) at intermediate temperatures (500–700 °C). Effects of the constituent phases and interphases on surface reactions and transport processes ...
  • Electrically-active defects in reduced and hydrogenated rutile TiO2 
    Bonkerud, Julie; Zimmermann, Christian; Weiser, Philip Michael; Herklotz, Frank; Seiffert, Christoph; Verhoeven, Espen Førdestrøm; Vines, Lasse; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
  • Electrochemically Assisted Growth of Hopper and Tabular Calcite under Confinement 
    Dziadkowiec, Joanna; Linga, Gaute; Kalchgruber, Lukas; Kavunga, Sunil; Cheng, Hsiu-Wei; Nilsen, Ola; Campsteijn, Coen; Pokroy, Boaz; Valtiner, Markus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Crystallization under confinement is commonplace in nature and offers new pathways to engineer crystals with the desired morphologies in a controlled and reproducible manner. In this work, we demonstrate the electrochemically ...
  • Electron-Beam Manipulation of Silicon Dopants in Graphene 
    Tripathi, Mukesh; Mittelberger, Andreas; Pike, Nicholas; Mangler, Clemens; Meyer, Jannik; Verstraete, Matthieu; Kotakoski, Jani; Susi, Toma (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The direct manipulation of individual atoms in materials using scanning probe microscopy has been a seminal achievement of nanotechnology. Recent advances in imaging resolution and sample stability have made scanning ...
  • Elucidating the origin of external quantum efficiency losses in cuprous oxide solar cells through defect analysis 
    Gan, Jiantuo; Hoye, Robert L.Z; Levskaya, Yulia; Vines, Lasse; Marin, Andrew T.; MacManus-Driscoll, Judith L.; Monakhov, Eduard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Heterojunction Cu2O solar cells are an important class of Earth-abundant photovoltaics that can be synthesized by a variety of techniques, including electrochemical deposition (ECD) and thermal oxidation (TO). The latter ...
  • Emerging nanomaterials in the detection and degradation of air pollutants 
    Samriti, NN; Rumyantseva, Marina; Sun, Shuhui; Kuznetsov, Andrej; Prakash, Jai (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2023)
    Air pollution implies significant threats for the human health and the surrounding environment. In recent years, a great deal of research has been carried out on the detection and removal of air pollutants through the ...
  • Emplacement mechanisms of a dyke swarm across the brittle-ductile transition and the geodynamic implications for magma-rich margins 
    Kjøll, Hans Jørgen; Galland, Olivier; Labrousse, Loic; Andersen, Torgeir Bjørge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    gneous dykes are the main magma transport pathways through the Earth’s crust, and they are considered to mainly accommodate for tectonic extension in volcanic rifts. Dykes are typically considered to result from brittle ...
  • Energetic Au ion beam implantation of ZnO nanopillars for optical response modulation 
    Macková, Anna; Malinský, Petr; Jagerová, Adéla; Mikšová, Romana; Lalik, Ondrej; Nekvindová, Pavla; Mistrík, Jan; Marvan, Petr; Sofer, Zdenek; Holý, Václav; Schutter, Jan David; Kentsch, Ulrich; Azarov, Alexander; Galeckas, Augustinas (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    Abstract Nanopillars of ZnO were implanted with Au-400 keV ions at various ion fluences from 1 × 10 15 cm −2 to 1 × 10 16 cm −2 and subsequently annealed at 750 °C for 15 min in order to reduce the implantation ...
  • Energetics, migration and trapping of Zn interstitials in ZnO 
    Azarov, Alexander; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Zn interstitial (Zni) is one of the fundamental intrinsic defects in ZnO and prominently affects the physical properties of the material. Here, the energetics and migration properties of Zni have been studied in ion implanted ...
  • Energy, phonon, and dynamic stability criteria of two-dimensional materials 
    Malyi, Oleksandr; Sopiha, Kostiantyn; Persson, Clas (Journal article / Tidsskriftartikkel / SubmittedVersion, 2019)
    First-principles calculations have become a powerful tool to exclude the Edisonian approach in search of novel two-dimensional (2D) materials. However, no universal first-principles criteria to examine the realizability ...
  • Enhanced activity of catalysts on substrates with surface protonic current in an electrical field – a review 
    Hisai, Yudai; Ma, Quanbao; Qureishy, Thomas; Watanabe, Takeshi; Higo, Takuma; Norby, Truls; Sekine, Yasushi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    It has over the last few years been reported that the application of a DC electric field and resulting current over a bed of certain catalyst-support systems enhances catalytic activity for several reactions involving ...
  • Enhanced hydrophobicity of CeO2 thin films: Role of the morphology, adsorbed species and crystallography 
    Mamedov, Damir; Åsland, Anna Cecilie; Cooil, Simon Phillip; Røst, Håkon; Bakkelund, Johannes; Allaniyazov, Atabek; Wells, Justin William; Karazhanov, Smagul (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    In order to guarantee the long-term efficiency of hydrophobic materials in real-world situations, it is necessary that their surfaces are highly resistant to scratching, fouling and misting. Furthermore, for the specific ...
  • Enhanced surface passivation of predictable quantum efficient detectors by silicon nitride and silicon oxynitride/silicon nitride stack 
    Stokkan, Therese Sørheim; Haug, Halvard; Tang, Chi Kwong; Marstein, Erik Stensrud; Gran, Jarle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    In this paper, we investigate three different passivating films for use in predictable quantum efficient detectors: two monolayer films of SiNx with different compositions and one double-layer stack of SiNxOy capped with ...
  • Enhancing chalcopyrite leaching by tetrachloroethylene-assisted removal of sulphur passivation and the mechanism of jarosite formation 
    Renard, Francois (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Chalcopyrite (CuFeS2) is the primary ore mineral for copper, but leaching of this mineral under atmospheric conditions is slow due to the formation of surface passivating phases such as elemental sulphur and jarosite. Here, ...
  • Enhancing giant magnetocaloric effect near room temperature by inducing magnetostructural coupling in Cu-doped MnCoGe 
    Pal, Santosh Kumar; Frommen, Christoph; Kumar, Susmit; Hauback, Bjørn; Fjellvåg, Helmer; Helgesen, Geir (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    High performance magnetocaloric materials are crucial to realize the energy efficient and environment friendly magnetic cooling/refrigeration technology. We have designed Mn1-xCuxCoGe compounds possessing a giant magnetocaloric ...
  • Enhancing the UV emission in ZnO-CNT hybrid nanostructures via the surface plasmon resonance of Ag nanoparticles 
    Rauwel, Protima; Galeckas, Augustinas; Rauwel, Erwan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The crystal quality and surface states are two major factors that determine optical properties of ZnO nanoparticles (NPs) synthesized through nonaqueous sol–gel routes, and both are strongly dependent on the growth conditions. ...
  • Entrepreneurial judgment and value capture, the case of the nascent offshore renewable industry 
    Erikson, Truls; Løvdal, Nicolai Solberg; Aspelund, Arild (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Entrepreneurship may be regarded as the mechanism of change towards sustainability. Any entrepreneur that seeks to start a new venture in an emerging industry will face resource and time constraints. The question we raise ...
  • Environmental Optima for Seven Strains of Pseudochattonella (Dictyochophyceae, Heterokonta) 
    Skjelbred, Birger; Edvardsen, Bente; Andersen, Tom (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
    The ichthyotoxic flagellate Pseudochattonella has formed recurrent blooms in the North Sea, Skagerrak and Kattegat since 1998. Five strains of Pseudochattonella farcimen and two strains of P. verruculosa were examined in ...
  • Equivalence of Electromagnetic Fluctuation and Nuclear (Yukawa) Forces: the π0 Meson, its Mass and Lifetime 
    Ninham, Barry W.; Brevik, Iver Håkon; Boström, Mathias (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    It is shown how Maxwell’s equations for the electromagnetic field with Planck quantisation of allowed modes appears to provide a semiclassical account of nuclear interactions. The mesons emerge as plasmons, collective ...