Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 28-47 of 838

  • Acceptor complex signatures in oxygen-rich ZnO thin films implanted with chlorine ions 
    Azarov, Alexander; Galeckas, Augustinas; Venkatachalapathy, Vishnukanthan; Mei, Zengxia; Du, Xiaolong; Monakhov, Eduard; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Spectroscopic identification of defects and impurities is crucial for understanding doping asymmetry issues in ZnO and, therefore, realization of true ZnO-based bipolar devices. Chlorine (Cl) is an amphoteric impurity in ...
  • Accuracy and efficiency of germline variant calling pipelines for human genome data 
    Zhao, Sen; Agafonov, Oleg; Azab, Abdulrahman; Stokowy, Tomasz; Hovig, Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract Advances in next-generation sequencing technology have enabled whole genome sequencing (WGS) to be widely used for identification of causal variants in a spectrum of genetic-related disorders, and provided new ...
  • Acidity effect on benzene methylation kinetics over substituted H-MeAlPO-5 catalysts 
    Mortén, Magnus; Cordero Lanzac, Tomas; Cnudde, Pieter; Redekop, Evgeniy; Svelle, Stian; Van Speybroeck, Veronique; Olsbye, Unni (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Methylation of aromatic compounds is a key reaction step in various industrial processes such as the aromatic cycle of methanol-to-hydrocarbons chemistry. The study of isolated methylation reactions and of the influence ...
  • Acoustic Emissions of Nearly Steady and Uniform Granular Flows: A Proxy for Flow Dynamics and Velocity Fluctuations 
    Bachelet, V.; Mangeney, A.; Toussaint, Renaud; de Rosny, Rosny; Arran, M.I.; Farin, M.; Hibert, C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The seismic waves emitted during granular flows are generated by different sources: high frequencies by interparticle collisions and low frequencies by global motion and large scale deformation. To unravel these ...
  • Activation energy of silicon diffusion in gallium oxide: Roles of the mediating defects charge states and phase modification 
    Azarov, Alexander; Venkatachalapathy, Vishnukanthan; Vines, Lasse; Monakhov, Eduard; Lee, In-Hwan; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    Silicon (Si) is an efficient n-type dopant in gallium oxide (Ga2O3)—an ultra-wide bandgap semiconductor promising in a number of applications. However, in spite of the technological importance for device fabrication, the ...
  • Adjustable reach in a network centrality based on current flows 
    Gurfinkel, Aleks J.; Rikvold, Per Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Centrality, which quantifies the “importance” of individual nodes, is among the most essential concepts in modern network theory. Most prominent centrality measures can be expressed as an aggregation of influence flows ...
  • Advanced and Emerging Negative Electrodes for Li-Ion Capacitors: Pragmatism vs. Performance 
    Lai, Samson Yuxiu; Cavallo, Carmen; Abdelhamid, Muhammad; Lou, Fengliu; Koposov, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Li-ion capacitors (LICs) are designed to achieve high power and energy densities using a carbon-based material as a positive electrode coupled with a negative electrode often adopted from Li-ion batteries. However, such ...
  • Al Implantation in SiC; Where Will the Ions Come to Rest? 
    Linnarsson, Margareta; Vines, Lasse; Hallen, Anders (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    In all implantations into crystalline targets, quite a few ions find a path along a crystal channel or plane, so called channeling, and these ions travel deep into the crystal. This paper treats aluminum (Al) implantation ...
  • Al-implantation induced damage in 4H-SiC 
    Kumar, Piyush; Martins, Maria I. M.; Bathen, Marianne Etzelmüller; Prokscha, Thomas; Grossner, Ulrike (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
  • Alkali dispersion in (Ag,Cu)(In,Ga)Se2 thin film solar cells – Insight from theory and experiment 
    Aboulfadl, Hisham; Sopiha, Kostiantyn; Keller, J; Larsen, J; Scragg, Jonathan; Persson, Clas; Thuvander, Mattias; Edoff, Marika (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Silver alloying of Cu(In,Ga)Se2 absorbers for thin film photovoltaics offers improvements in open-circuit voltage, especially when combined with optimal alkali-treatments and certain Ga concentrations. The relationship ...
  • ALKBH8-mediated formation of a novel diastereomeric pair of wobble nucleosides in mammalian tRNA 
    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)
  • An inside perspective on magma intrusion: Quantifying 3d displacement and strain in laboratory experiments by dynamic X-ray computed tomography 
    Poppe, Sam; Holohan, Eoghan; Galland, Olivier; Buls, Nico; Van Gompel, Gert; Keelson, Benyameen; Tournigand, Pierre-Yves; Brancart, Joost; Hollis, Dave; Nila, Alex; Kervyn, Matthieu (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Magma intrusions grow to their final geometries by deforming the Earth's crust internally and by displacing the Earth's surface. Interpreting the related displacements in terms of intrusion geometry is key to forecasting ...
  • Analytical solution for the stress field in elastic half-space with a spherical pressurized cavity or inclusion containing eigenstrain 
    Zhong, Xin; Dabrowski, Marcin; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We present an analytical solution based on the series expansion of Papkovich-Boussinesq's displacement potentials to derive the elastic solution of a spherical inclusion containing an eigenstrain or pressurized cavity in ...
  • Anisotropic and plane-selective migration of the carbon vacancy in SiC: Theory and experiment 
    Bathen, Marianne Etzelmüller; Coutinho, José; Ayedh, Hussein Mohammed Hussein; Hassan, Jawad U; Farkas, Ildiko; Öberg, Sven; Frodason, Ymir Kalmann; Svensson, Bengt Gunnar; Vines, Lasse (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We investigate the migration mechanism of the carbon vacancy (VC) in silicon carbide (SiC) using a combination of theoretical and experimental methodologies. The VC, commonly present even in state-of-the-art epitaxial SiC ...
  • Anisotropic and trap-limited diffusion of hydrogen/deuterium in monoclinic gallium oxide single crystals 
    Reinertsen, Vilde Mari; Weiser, Philip Michael; Frodason, Ymir Kalmann; Bathen, Marianne Etzelmüller; Vines, Lasse; Johansen, Klaus Magnus H (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    The effect of lattice anisotropy on the diffusion of hydrogen (H)/deuterium (2H) in β-Ga2O3 was investigated using secondary ion mass spectrometry (SIMS) and hybrid-functional calculations. Concentration-depth profiles of ...
  • Anisotropy of the proton kinetic energy in ice Ih 
    Yacov, Finkelstein; Raymond, Moreh; Bianchini, Federico; Vajeeston, Ponniah (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The partial vibrational density of states (pVDOS) of ice Ih, as simulated by first principle modeling based on density functional theory (DFT), is utilized for computing the Cartesian components of the proton and oxygen ...
  • Antifluorite-type Na5FeO4 as a low-cost, environment-friendly cathode with combined cationic/anionic redox activity for sodium ion batteries: a first-principles investigation 
    Thøgersen, Rasmus Vester; Bianchini, Federico; Fjellvåg, Helmer; Ponniah, Vajeeston (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The rapid electrification of our society and the transition towards a larger share of intermittent renewable energy sources in our electricity grids will dramatically increase the demand for cheap energy storage. Sodium ...
  • Application of machine learning-based selective sampling to determine BaZrO3 grain boundary structures 
    Bondevik, Tarjei; Kuwabara, Akihide; Løvvik, Ole Martin (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    A selective sampling procedure is applied to reduce the number of density functional theory calculations needed to find energetically favorable grain boundary structures. The procedure is based on a machine learning algorithm ...
  • Archaea in boreal Swedish lakes are diverse, dominated by Woesearchaeota and follow deterministic community assembly 
    Juottonen, Heli; Fontaine, Laurent; Wurzbacher, Christian; Drakare, Stina; Peura, Sari; Eiler, Alexander (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Despite their key role in biogeochemical processes, particularly the methane cycle, archaea are widely underrepresented in molecular surveys because of their lower abundance compared with bacteria and eukaryotes. Here, we ...
  • Area-selective atomic layer deposition of molybdenum oxide 
    Kvalvik, Julie Nitsche; Borgersen, Jon; Hansen, Per-Anders Stensby; Nilsen, Ola (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Area-selective bottom-up synthesis routes of thin films are required to overcome the current limits in lithography, and such growth can be achieved with high quality and nanometer thickness control by area-selective atomic ...