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    • CLEASE: a versatile and user-friendly implementation of cluster expansion method 

      Chang, Jin Hyun; Kleiven, David; Melander, Marko; Akola, Jaakko; Garcia-Lastra, Juan Maria; Vegge, Tejs (Journal article; Peer reviewed, 2019)
      Materials exhibiting a substitutional disorder such as multicomponent alloys and mixed metal oxides/oxyfluorides are of great importance in many scientific and technological sectors. Disordered materials constitute an ...

    • Climate Change and Fate of Arctic Oil Spills 

      Nordam, Tor; Beegle-Krause, Cynthia Juyne; Reed, Mark (Chapter, 2017)
      To investigate how the fate of oil released in the Arctic Ocean may change with a warmer climate, we have performed ensembles of oil spill simulations using Arctic environmental information (winds, currents, ice cover, ...

    • Climatological Westward‐Propagating Semidiurnal Tides and Their Composite Response to Sudden Stratospheric Warmings in SuperDARN and SD‐WACCM‐X 

      Zhang, Z.; Limpasuvan, Varavut; Orsolini, Yvan J.; Espy, Patrick Joseph; Hibbins, Robert (Peer reviewed; Journal article, 2021)
      Using the Super Dual Auroral Radar Network observations (clustered around 60°N) and NCAR CESM2.0 extended Whole Atmosphere Community Climate Model nudged with reanalyzes, we examine the climatology of semidiurnal tides in ...

    • Climatology of gravity wave activity in Antarctica 

      Kringlebotn, Ole Martin Granhus (Master thesis, 2020)
      Målinger har blitt gjort av natthimmellys fra OH ved å bruke et Michelson interferometer. Målingene ble gjennomført ved Rothera (68°S, 68°W) over en periode på åtte år fra 2002 til slutten av 2009. I denne oppgaven studeres ...

    • Closing of Micro-cavities in Well Cement upon Exposure to CO2 Brine 

      Chavez Panduro, Elvia Anabela; Torsæter, Malin; Gawel, Kamila; Bjørge, Ruben; Gibaud, Alain; Yang, Yi; Sørensen, Henning; Frykman, Peter; Kjøller, Claus; Breiby, Dag Werner (Journal article; Peer reviewed, 2017)
      Long-lasting cement plugging of wells is crucial for successful CO2 storage in underground reservoirs. It requires a profoundly improved understanding of the behavior of fractured cement under realistic subsurface conditions ...

    • Cluster Analysis of Multiparametric Magnetic Resonance Images of Rectal Cancer 

      Abrahamsen, Bendik Skarre (Master thesis, 2019)
      Sammendrag: Formål: Klyngeanalyse utført på funksjonelle magnetresonans (MR) bilder har blitt foreslått som en metode for å dele heterogene tumorvolum inn i mer homogene subvolum. Målet med denne studien er å undersøke ...

    • Clustering and Vacancy Behavior in High- and Low-Solute Al-Mg-Si Alloys 

      Wenner, Sigurd; Nishimura, Katsuhiko; Matsuda, Kenji; Matsuzaki, Teiichiro; Tomono, Dai; Pratt, Francis L.; Marioara, Calin Daniel; Holmestad, Randi (Journal article, 2014)
      The precipitate microstructure and vacancy distribution in Al-Mg-Si alloys with different amounts of solute and different heat treatments were investigated by transmission electron microscopy and muon spin relaxation ...

    • Clustering during Natural Aging and its Effect on Precipitation Hardening in Al-Mg-Si Alloys 

      Martinsen, Fredrik Aleksander (Master thesis, 2011)
      The effect of clustering during natural aging of three different Al-Mg-Sialloys with equal Mg/Si-ratios, but different Mg+Si contents have beenstudied through hardness measurements and transmission electron mi-croscopy ...

    • CO desorption from nickel-decorated muscovite mica 

      Hunvik, Kristoffer William Bø; Støvneng, Anna; Pacáková, Barbara; Raaen, Steinar (Journal article; Peer reviewed, 2019)
      Adsorption and desorption of CO from Ni nanostructures deposited on muscovite mica substrates have been studied by TPD and characterized by XPS and AFM. In agreement with previous reports it is found that CO does not adsorb ...

    • CO2 Adsorption Enhanced by Tuning the Layer Charge in a Clay Mineral 

      Hunvik, Kristoffer William Bø; Loch, Patrick; Wallacher, Dirk; Kirch, Alexsandro; Cavalcanti, Leide Passos; Rieß, Martin; Daab, Matthias; Josvanger, Vegard; Grätz, Sven; Yokaichiya, Fabiano; Knudsen, Kenneth Dahl; Miranda, Caetano Rodrigues; Breu, Josef; Fossum, Jon Otto (Peer reviewed; Journal article, 2021)
      Due to the compact two-dimensional interlayer pore space and the high density of interlayer molecular adsorption sites, clay minerals are competitive adsorption materials for carbon dioxide capture. We demonstrate that ...

    • CO2 adsorption on pure and oxidised Ni nano-structures deposited on mica surfaces 

      Hunvik, Kristoffer William Bø; Pacáková, Barbara; Raaen, Steinar (Peer reviewed; Journal article, 2020)
      Adsorption and desorption of CO2 on metallic and oxidised Ni nano-structures supported on mica (muscovite) substrates have been studied by temperature-programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and ...

    • CO2 Capture and Storage in Fluorohectorite Clay. Role of Pressure, Temperature and Interlayer Cation: XRD Studies 

      Konstanse Kvalem Seljelid (Master thesis, 2019)
      Som konsekvens av aukande CO2 utslepp i atmosfæren vert fleire teknologiar innanfor karbonfangst og lagring undersøkt. I denne samanhengen vert også leiremineral studert på grunn av deira evner til å absorbere CO2, i tillegg ...

    • CO2 laser annealed SiGe core optical fibers with radial Ge concentration gradients 

      Wu, Wei; Balci, Mustafa H.; Song, Seunghan; liu, chunxin; Fokine, Michael; Laurell, Fredrik; Hawkins, Thomas A.; Ballato, John; Gibson, Ursula (Peer reviewed; Journal article, 2020)
      CO2 laser annealing of SiGe core, glass-clad optical fibers is a powerful technique for the production of single-crystal cores with spatially varying Ge concentrations. Laser power, laser scan speed and cooling air flow ...

    • Coating for Metal Bipolar Plates in PEM Water Electrolysers 

      Krakhella, Kjersti Sandvik (Master thesis, 2015)
      To increase the efficiency of hydrogen as an energy storage medium, this project's goal is to lower the cost of Proton Exchange Membrane Water Electrolysers (PEMWE) by decreasing the cost of the most expensive component: ...

    • Coherent and Correlated Spin Transport in Nanoscale Superconductors 

      Morten, Jan Petter (Doktoravhandlinger ved NTNU, 1503-8181; 2008:72, Doctoral thesis, 2008)
      Motivated by the desire for better understanding of nanoelectronic systems, we theoretically study the conductance and noise characteristics of current flow between superconductors, ferromagnets, and normal-metals. Such ...

    • Coherent octave-spanning mid-infrared supercontinuum generated in As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser 

      Xie, Shangran; Tolstik, Nikolai; Travers, J.; Sorokin, Evgeni; Caillaud, Celine; Troles, Johann; Russell, Philip St.J.; Sorokina, Irina T (Journal article; Peer reviewed, 2016)
      A more than 1.5 octave-spanning mid-infrared supercontinuum (1.2 to 3.6 μm) is generated by pumping a As2S3-silica “double-nanospike” waveguide via a femtosecond Cr:ZnS laser at 2.35 μm. The combination of the optimized ...

    • Coherent Plane-Wave Compounding in Medical Ultrasound Imaging: Quality Investigation of 2D B-mode Images of Stationary and Moving Objects. 

      Øvland, Ragnhild (Master thesis, 2012)
      Coherent plane-wave compounding is the coherent summation of several successive plane waves incident at different angles. This thesis presents results from simulations and in vitro and in vivo measurements of stationary ...

    • Collective effects in low-dimensional systems with coupled quasiparticles 

      Thingstad, Even (Doctoral theses at NTNU;2021:279, Doctoral thesis, 2021)
      Many of the most fascinating and challenging phenomena in condensed matter physics occur in systems with coupling between quasiparticles of different nature. This thesis is concerned with the study of collective effects ...

    • Colloidal crystals as templates for light harvesting structures in solar cells 

      Haugan, Einar; Granlund, Håvard; Gjessing, Jo; Marstein, Erik Stensrud (Journal article; Peer reviewed, 2011)
      Monolayer colloidal crystals are formed using silica- and polystyrene beads and used as etch masks for the formation of regular, _m period hexagonal arrays of indentations in a silicon wafer. Such patterns can be used as ...

    • Colloidal Crystals as Templates for Light Harvesting Structures in Solar Cells 

      Haugan, Einar (Master thesis, 2011)
      Monolayer colloidal crystals are formed using silica- and polystyrene beads and used as templates in nanosphere lithography for creating various hexagonal periodic structures intended for light harvesting in crystalline ...