Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 226-245 of 838

  • Effects of Substrate and Post-Deposition Annealing on Structural and Optical Properties of (ZnO)1-x(GaN)x Films 
    Olsen, Vegard Skiftestad; Bazioti, Kalliopi; Baldissera, Gustavo; Azarov, Alexander; Prytz, Øystein; Persson, Clas; Svensson, Bengt Gunnar; Kuznetsov, Andrej; Vines, Lasse (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The structural and optical properties of magnetron sputtered thin films of (ZnO)1−x(GaN)x deposited on zinc oxide, sapphire, and silicon oxide are studied as a function of strain accumulation and post‐deposition anneals ...
  • Effects of uniaxial pressure on the spin ice Ho2Ti2 O7 
    Edberg, R.; Bakke, Ingrid; Kondo, H.; Sandberg, L. Ørduk; Haubro, M.L.; Guthrie, M.; Holmes, A.T.; Engqvist, J.; Wildes, A.; Matsuhira, K.; Lefmann, Kim; Deen, P.P.; Mito, M.; Henelius, P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The spin ice materials Ho2Ti2O7 and Dy2Ti2O7 are experimental and theoretical exemplars of highly frustrated magnetic materials. However, the effects of applied uniaxial pressure are not well studied, and here we report ...
  • Effekt av fettsyren EPA på genekspresjon i celler infisert med infeksiøs lakseanemi virus (ISAV), En analyse av RNA sekvenseringsdataRestricted Access 
    Ahmadi, Samira (Master thesis / Masteroppgave, 2023)
  • Efficient solutions of fermionic systems using artificial neural networks 
    Nordhagen, Even Marius; Kim, Jane M.; Fore, Bryce; Lovato, Alessandro; Hjorth-Jensen, Morten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    In this study, we explore the similarities and differences between variational Monte Carlo techniques that employ conventional and artificial neural network representations of the ground-state wave function for fermionic ...
  • Electric and magnetic properties of Lanthanum Barium Cobaltite 
    Szpunar, Iga; Wachowski, Sebastian; Miruszewski, Tadeusz; Dzierzgowski, Kacper; Górnicka, Karolina; Klimczuk, Tomasz; Sørby, Magnus Helgerud; Balaguer, María; Serra, José M.; Strandbakke, Ragnar; Gazda, Maria; Mielewczyk-Gryń, Aleksandra (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The cubic Ba0.5La0.5CoO3‐δ was synthesized using solid state reaction. The structural properties were determined by the simultaneous refinement of Synchrotron Powder X‐ray Diffraction and Neutron Powder Diffraction data. ...
  • Electrical charge state identification and control for the silicon vacancy in 4H-SiC 
    Bathen, Marianne Etzelmüller; Galeckas, Augustinas; Müting, Johanna; Ayedh, Hussein Mohammed Hussein; Grossner, Ulrike; Coutinho, José; Frodason, Ymir Kalmann; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Reliable single-photon emission is crucial for realizing efficient spin-photon entanglement and scalable quantum information systems. The silicon vacancy (VSi) in 4H-SiC is a promising single-photon emitter exhibiting ...
  • 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 ...