Browsing Fysisk institutt by Title

Now showing items 54-73 of 3672

  • A Study of Transport Properties in Cu and P doped ZnSb 
    Valset, Kjetil; Song, Xin; Finstad, Terje (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    ZnSb samples have been doped with copper and phosphorus and sintered at 798 K. Electronic transport properties are interpreted as being influenced by an impurity band close to the valence band. At low Cu dopant concentrations, ...
  • A toroidal Zr70 oxysulfate cluster and its diverse packing structures 
    Øien-Ødegaard, Sigurd; Bazioti, Kalliopi; Redekop, Evgeniy; Prytz, Øystein; Lillerud, Karl Petter; Olsbye, Unni (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Herein, we report the discovery of a toroidal inorganic cluster of zirconium(IV) oxysulfate of unprecedented size with the formula Zr70(SO4)58(O/OH)146⋅x(H2O) (Zr70), which displays different packing of ring units and thus ...
  • A unified computational model for cortical post-synaptic plasticity 
    Mäki-Marttunen, Tuomo; Iannella, Nicolangelo Libero; Edwards, Andrew; Einevoll, Gaute; Blackwell, Kim T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Signalling pathways leading to post-synaptic plasticity have been examined in many types of experimental studies, but a unified picture on how multiple biochemical pathways collectively shape neocortical plasticity is ...
  • A unified field theory of topological defects and non-linear local excitations 
    Skogvoll, Vidar; Rønning, Jonas; Salvalaglio, Marco; Angheluta, Luiza (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Topological defects and smooth excitations determine the properties of systems showing collective order. We introduce a generic non-singular field theory that comprehensively describes defects and excitations in ...
  • A unified perspective on two-dimensional quantum turbulence and plasticity 
    Skaugen, Audun (Doctoral thesis / Doktoravhandling, 2018)
    We investigate two-dimensional quantum turbulence and plasticity from a common mathematical perspective, focusing on topological defects as the most important degrees of freedom. Quantum turbulence features quantized ...
  • Ab initio molecular dynamics simulation of phosphorus diffusion in silicon 
    Heggø, Dan Michael (Master thesis / Masteroppgave, 2012)
  • Ab Initio Molecular Dynamics: A Virtual Laboratory 
    Hobbi Mobarhan, Milad (Master thesis / Masteroppgave, 2014)
    In this thesis, we perform ab initio molecular dynamics (MD) simulations at the Hartree-Fock level, where the forces are computed on-the-fly using the Born-Oppenheimer approximation. The theory behind the Hartree-Fock ...
  • Ab Initio Studies of Molecules 
    Eiding, Henrik Mathias (Master thesis / Masteroppgave, 2014)
    The goal of this thesis has been to develop from scratch an ab initio computer program for calculating the electronic structure and properties of molecules. In order to obtain a good compromise between accuracy and ...
  • Absence of paired crossing in the positive parity bands of Cs 124 
    Singh, A.K.; Basu, A.; Nag, Somnath; Hubel, H.; Domscheit, J.; Ragnarsson, I; al-Khatib, A.; Hagemann, G.B.; Herskind, B.; Elema, D.R.; Wilson, J. N.; Clark, R.M.; Cromaz, M.; Fallon, P.; Görgen, Andreas; Lee, I.Y.; Ward, D.; Ma, W.C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    High-spin states in 124 Cs were populated in the 64 Ni ( 64 Ni , p 3 n ) reaction and the Gammasphere detector array was used to measure γ -ray coincidences. Both positive- and negative-parity bands, including bands with ...
  • Absolute radiation tolerance of amorphous alumina coatings at room temperature 
    Zaborowska, A.; Kurpaska, L.; Clozel, M.; Olivier, E.J.; O'Connell, J.H.; Vanazzi, M.; Di Fonzo, Fonzo; Azarov, A.; Jóźwik, I.; Frelek-Kozak, M.; Diduszko, R.; Neethling, J.H.; Jagielski, J. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    In this study structural and mechanical properties of a 1 μm thick Al2O3 coating, deposited on 316L stainless steel by Pulsed Laser Deposition (PLD), subjected to high energy ion irradiation were assessed. Mechanical ...
  • Absorbing random walks interpolating between centrality measures on complex networks 
    Gurfinkel, Alexander Jacob; Rikvold, Per Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Centrality, which quantifies the importance of individual nodes, is among the most essential concepts in modern network theory. As there are many ways in which a node can be important, many different centrality measures ...
  • Accelerated Magnetic Resonance Imaging Using Deep Learning Reconstruction 
    Ottesen, Jon Andre (Master thesis / Masteroppgave, 2021)
  • Accelerated material development for laser powder-bed fusion using the arc melting process 
    Reiersen, Magnus; Gunnæs, Anette Eleonora; S. Azar, Amin; Diplas, Spyridon; Du, Qiang; M'hamdi, Mohammed (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Metal additive manufacturing has in recent years gained an increasing amount of attention, especially the subgroup of laser powder-bed fusion and aluminium alloys. However, established alloys are designed for casting and ...
  • Accelerating Spike Metrics Using Siamese Neural NetworksRestricted Access 
    Oftedahl, Maria Lunde (Master thesis / Masteroppgave, 2023)
  • Acceleration of electrons in the plasma wakefield of a proton bunch 
    Adli, Erik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    High-energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. To increase the energy of the particles or to reduce the size ...
  • 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 ...
  • Acceptor-like deep level defects in ion-implanted ZnO 
    Vines, Lasse; Wong-Leung, J.; Jagadish, C.; Quemener, Vincent; Monakhov, Edouard; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    N-type ZnO samples have been implanted with MeV Zn+ ions at room temperature to doses between 1×108 and 2×1010cm−2, and the defect evolution has been studied by capacitance-voltage and deep level transient spectroscopy ...
  • Accessing the strong interaction between Λ baryons and charged kaons with the femtoscopy technique at the LHC 
    Acharya, S.; Adamová, D.; Adler, A.; Aglieri Rinella, Rinella; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S.U.; Ahuja, I.; Akindinov, A.; Al-Turany, M.; Aleksandrov, D.; Alessandro, B.; Alfanda, H.M.; Alfaro Molina, Molina; Ali, B.; Alici, A.; Alizadehvandchali, N.; Alme, Johan; Bodova, Tea; Bylinkin, Aleksandr; Djuvsland, Øystein; Ersdal, Magnus Rentsch; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Langøy, Rune; Lien, Jørgen André; Lofnes, Ingrid Mckibben; Arsene, Ionut Cristian; Malik, Qasim Waheed; Neagu, Alexandra; Nese, Sigurd; Nystrand, Joakim Ingemar; Rauch, Max Philip; Rehman, Attiq Ur; Reme-Ness, Haakon André; Richter, Matthias; Røed, Ketil; Röhrich, Dieter; Sætre, Jon-Are; Skaali, Toralf Bernhard; Solheim, Emilie Haugland; Storehaug, Ida Torkjellsdatter; Tveter, Trine Spedstad; Ullaland, Kjetil; Wikne, Jon Christopher; Yang, Shiming; Yuan, Shiming; ALICE, Collaboration (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
  • Accurate determination of domain boundary orientation in LaNbO4 
    Prytz, Øystein; Taftø, Johan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
    The orientation relationship between ferroelastic domains in LaNbO4 (with 0.5 at.% Sr) is studied by selected area electron diffraction and high-resolution electron microscopy. At room temperature the domains are related ...
  • 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 ...