• 10 nm deep, sub-nanoliter fluidic nanochannels on germanium for attenuated total reflection infrared (ATR-IR) spectroscopy 

      Sriram, K.K.; Nayak, Simantini; Pengel, Stefanie; Chou, Chia-Fu; Erbe, Andreas (Journal article; Peer reviewed, 2017)
      The fabrication of sub-nanoliter fluidic channels is demonstrated, with merely 10 nm depth on germanium, using conventional semiconductor device fabrication methods and a polymer assisted room-temperature sealing method. ...
    • 134Ba diffusion in polycrystalline BaMO3 (M = Ti, Zr, Ce) 

      Sazinas, Rokas; Sakaguchi, Isao; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2017)
      Cation diffusion in functional oxide materials is of fundamental interest, particularly in relation to interdiffusion of cations in thin film heterostructures and chemical stability of materials in high temperature ...
    • 1D oxide nanostructures from chemical solutions 

      Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2014)
      Nanotechnology has motivated a tremendous effort to grow free standing or hierarchical nanomaterials such as nanowires and nanorods. Bottom-up approaches based on chemistry are an important approach to nanomaterials, and ...
    • 3D aligned-carbon-nanotubes@Li2FeSiO4 arrays as high rate capability cathodes for Li-ion batteries 

      Zhou, Haitao; Lou, Fengliu; Vullum, Per Erik; Einarsrud, Mari-Ann; Chen, De; Vullum-Bruer, Fride (Journal article; Peer reviewed, 2013-09-27)
      3D aligned-carbon-nanotubes (ACNTs)@Li2FeSiO4 nanocomposite arrays on Al foil were developed as cathode materials for Li-ion batteries. The ACNTs were grown directly on an Al foil by a chemical vapor deposition method to ...
    • 3D non-isothermal phase-field simulation of microstructure evolution during selective laser sintering 

      Yang, Yangyiwei; Ragnvaldsen, Olav; Bai, Yang; Yi, Min; Xu, Bai-Xiang (Journal article; Peer reviewed, 2019)
      During selective laser sintering (SLS), the microstructure evolution and local temperature variation interact mutually. Application of conventional isothermal sintering model is thereby insufficient to describe SLS. In ...
    • 96Zr Tracer Diffusion in AZro3 (A = Ca, Sr, Ba) 

      Sazinas, Rokas; Sakaguchi, Isao; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2018)
      Cation tracer diffusion in polycrystalline AZrO3 (A = Ca, Sr, Ba) perovskites was studied at 1300–1500 °C in air using the stable isotope 96Zr. Thin films of 96ZrO2 were deposited on polished ceramic pellets by drop casting ...
    • A combined isotropic, kinematic and distortional hardening model for aluminum and steels under complex strain-path changes 

      Qin, Jisheng; Holmedal, Bjørn; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2018)
      In this work, a new model is proposed for predicting stress transients caused by strain path changes. The model is formulated in stress space, where a second order tensor, i.e., the microstructure stress deviator, is used ...
    • A comprehensive study on improved power materials for high-temperature thermoelectric generators 

      Bittner, Michael; Kanas, Nikola; Hinterding, Richard; Steinbach, Frank; Räthel, Jan; Schrade, Mattias; Wiik, Kjell; Einarsrud, Mari-Ann; Feldhoff, Armin (Journal article; Peer reviewed, 2019)
      Dense Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO-NCO-BCCO) nanocomposites were produced from sol-gel derived Ca2.25Na0.3Bi0.35Tb0.1Co4O9 powder by four methods: Hot-pressing (HP), spark plasma sintering (SPS) and pressureless ...
    • A concept for electrowinning of aluminium using depolarized gas anodes 

      Mokkelbost, Tommy; Kjos, Ole Sigmund; Paulsen, Ove Bjørn; Øye, Bjarte Arne; Gudbrandsen, Henrik; Ratvik, Arne Petter; Haarberg, Geir Martin (Journal article; Peer reviewed, 2014)
      Aluminium is today commercially produced by the Hall-Héroult process using consumable carbon anodes. Consumable anodes have some concerns such as CO2 emission, continuous anodecathode distance adjustments and replacements ...
    • A First-Principles Study of the Al (001)/Fe(0-11) Interface 

      Khalid, Muhammad Zeeshan; Friis, Jesper; Ninive, Per Harald; Marthinsen, Knut; Strandlie, Are (Journal article; Peer reviewed, 2018)
      Two phase Stefan problem was solved using analytical method in cylindrical domain. To solve governing equations Eigen conditions were formulated by using separation of variable technique. Eigenvalues of the eigencondition ...
    • A Method for Assessment of Recyclability of Aluminum from Incinerated Household Waste 

      Gökelma, Mertol; Meling, Ingrid; Soylu, Ece; Kvithyld, Anne; Tranell, Gabriella (Journal article; Peer reviewed, 2019)
      Aluminum is widely used in daily household consumable goods such as food and drink packaging materials, storage containers, etc. The disposal of such goods into household waste means that this waste stream contains a ...
    • A microfluidic electrochemical cell with integrated PdH reference electrode for high current experiments 

      Fanavoll, Espen Vinge; Harrington, David A.; Sunde, Svein; Singh, Gurvinder; Seland, Frode (Journal article; Peer reviewed, 2016)
      An on-chip thin-film palladium hydride reference electrode is described for use with microfluidic electrochemical cells. A Pd electrode fabricated by photolithographic methods is charged with hydrogen in-situ with a simple ...
    • A Photomagnetic Sponge: High-Temperature Light-Induced Ferrimagnet Controlled by Water Sorption 

      Magott, Michal; Reczynski, Mateusz; Gawel, Bartlomiej; Sieklucka, Barbara; Pinkowicz, Dawid (Journal article; Peer reviewed, 2018)
      “Converting” light energy to magnetization is the attribute of molecule-based compounds called photomagnets and is inaccessible for conventional magnetic solids. The design and synthesis of such compounds, however, is a ...
    • A physically-based constitutive model applied to AA6082 aluminium alloy at large strains, high strain rates and elevated temperatures 

      Vilamosa, Vincent; Clausen, Arild Holm; Børvik, Tore; Holmedal, Bjørn; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2016)
      This paper presents a physically-based constitutive model applied to an AA6082 aluminium alloy subjected to large strains, high strain rates and elevated temperatures. The model accounts for thermo-elasticity, thermo-vis ...
    • A semianalytical method for simulating mass transport at channel electrodes 

      Holm, Thomas; Sunde, Svein; Seland, Frode; Harrington, David A. (Journal article; Peer reviewed, 2015)
      A method for simulating electrode reactions in channel flow is developed and efficiently implemented in the symbolic algebra program Maple™. The steady-state convective diffusion equation for fully developed 2-D laminar ...
    • A Solute Pinning Approach to Solute Drag in Multi-Component Solid Solution Alloys 

      Hersent, Emmanuel C; Marthinsen, Knut; Nes, Erik Aasmund (Journal article; Peer reviewed, 2014)
      The Cahn, Lücke and Stüwe theory remains the backbone of more complex analysis dealing with solute drag, however, the mathematical treatment is rather involved. A new approach based on solute pinning the boundary has ...
    • A study of anode baking gas composition 

      Aarhaug, Thor Anders; Brandvik, Trond; Kjos, Ole Sigmund; Gaertner, Heiko; Ratvik, Arne Petter (Journal article; Peer reviewed, 2018)
      A method has been developed to measure gas composition inside the pit in open anode baking furnaces. The gas composition can be used to understand attack on and degradation of the refractory lining, baking behavior and ...
    • A thermodynamic assessment of the Nd-C system 

      Bian, Yuyang; Tang, Kai; Tranell, Gabriella (Journal article; Peer reviewed, 2015)
      The Nd–C binary system has been assessed based on the experimental investigation, thermodynamic calculations and the literature survey. The intermediate compounds Nd2C3 and βNdC2 (high-temperature form of NdC2 phase) were ...
    • A van der Waals Density Functional Study of MoO3 and Its Oxygen Vacancies 

      Inzani, Katherine; Grande, Tor; Vullum-Bruer, Fride; Selbach, Sverre Magnus (Journal article; Peer reviewed, 2016)
      The electronic structure of layered molybdenum trioxide MoO3 is highly sensitive to changes in oxygen stoichiometry as Mo6+ has an empty 4d shell. Applications of MoO3 are responsive to small changes in vacancy concentration, ...
    • A XANES Study of Sulfur Speciation and Reactivity in Cokes for Anodes Used in Aluminum Production 

      Jahrsengene, Gøril; Wells, Hannah C.; Rørvik, Stein; Ratvik, Arne Petter; Haverkamp, Richard G.; Svensson, Ann Mari (Journal article; Peer reviewed, 2018)
      Availability of anode raw materials in the growing aluminum industry results in a wider range of petroleum cokes being used to produce carbon anodes. The boundary between anode grade cokes and what previously was considered ...