Recent Submissions

  • Selective Charging Behavior in an Ionic Mixture Electrolyte- Supercapacitor System for Higher Energy and Power 

    Wang, Xuehang; Mehandzhiyski, Aleksandar Yordanov; Arstad, Bjørnar; Van Aken, Katherine L.; Tyler S., Mathis; Gallegos, Alejandro; Tian, Ziqi; Ren, Dingding; Sheridan, Edel; Grimes, Brian Arthur; Jiang, De-en; Wu, Jianzhong; Gogotsi, Yury; Chen, De (Journal article; Peer reviewed, 2017)
    Ion–ion interactions in supercapacitor (SC) electrolytes are considered to have significant influence over the charging process and therefore the overall performance of the SC system. Current strategies used to weaken ionic ...
  • A Single Point, Multi-Parameter, Fiber Optic Sensor Based on a Combination of Interferometry and LSPR 

    Muri, Harald Ian; Bano, Andon; Hjelme, Dag Roar (Journal article; Peer reviewed, 2018)
    We demonstrate a new single point, multi-parameter, fiber optic sensor concept based on a combination of interferometric and plasmonic sensor modalities on an optical fiber end face. The sensor consists of an extrinsic ...
  • Characterization of the Body-to-Body Propagation Channel for Subjects during Sports Activities 

    Mohamed, Marshed Kassim; Cheffena, Michael; Moldsvor, Arild (Journal article; Peer reviewed, 2018)
    Body-to-body wireless networks (BBWNs) have great potential to find applications in team sports activities among others. However, successful design of such systems requires great understanding of the communication channel ...
  • 11 years of Experts in teamwork at NTNU 

    Larsen, Bjørn B. (Chapter, 2012)
    “Experts in teamwork” is an obligatory subject for all master students at the Norwegian University of Science and Technology (NTNU). The students are organised in interdisci-plinary teams of 5 from at least 3 different ...
  • Dopant incorporation in Al0.9Ga0.1As0.06Sb0.94 grown by molecular beam epitaxy 

    Patra, Saroj Kumar; Tran, Thanh-Nam; Vines, Lasse; Kolevatov, Ilia; Monakhov, Edouard; Fimland, Bjørn-Ove (Journal article, 2017)
    Incorporation of beryllium (Be) and tellurium (Te) dopants in epitaxially grown Al0.9Ga0.1As0.06Sb0.94 layers was investigated. Carrier concentrations and mobilities of the doped layers were obtained from room temperature ...
  • Laboratory experiments on ultrasonic logging through casing for barrier integrity validation 

    Talberg, Andreas Sørbrøden; Johansen, Tonni Franke; Larsen, Idar (Chapter, 2017)
    Verification of annular barriers is essential for well integrity, with ultrasonic methods being central in well integrity testing for many decades. By doing ultrasonic pitch-catch measurements on a bench top laboratory ...
  • IEI-EMF Provocation Case Studies: A Novel Approach to Testing Sensitive Individuals 

    Verrender, Adam; Loughran, Sarah; Andersson, Vitas; Hillert, Lena; Rubin, G. James; Oftedal, Gunnhild (Journal article; Peer reviewed, 2017)
    The etiology of Idiopathic Environmental Intolerance attributed to Electromagnetic Fields (IEI-EMF) is controversial. While the majority of studies have indicated that there is no relationship between EMF exposure and ...
  • Spatially Confined Spin Polarization and magnetic sublattice control in (La,Sr)MnO3−δ Thin Films by Oxygen Vacancy Ordering 

    Moreau, Magnus; Selbach, Sverre Magnus; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2017)
    Perovskite oxides are known for their strong structure property coupling and functional properties such as ferromagntism, ferroelectricity and high temperature superconductivity. While the effect of ordered cation vacancies ...
  • First-principles study of the effect of (111) strain on octahedral rotations and structural phases of LaAlO3 

    Moreau, Magnus; Marthinsen, Astrid; Selbach, Sverre Magnus; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2017)
    The structural and electronic response of LaAlO3 to biaxial strain in the (111) plane is studied by density functional theory (DFT) and compared with strain in the (001) plane and isostatic strain. For (111) strain, in-plane ...
  • High resolution spectral estimation for radar in a pipe 

    Schei, Henning (Master thesis, 2017)
    In this project I have studied and evaluated several high resolution spectral estimation algorithms to improve accuracy and robustness in a FMCW radar tank gauge (RTG). The system parameters are taken from KONGSBERG's ...
  • An 11.0 bit ENOB, 9.8 fJ/conv.-step noise-shaping SAR ADC calibrated by least squares estimation 

    Garvik, Harald; Wulff, Carsten; Ytterdal, Trond (Journal article; Peer reviewed, 2017)
    A noise-shaping SAR ADC implemented in 28 nm UTBB FDSOI is presented. A cascaded FIR-IIR loop filter topology is used, and implemented as an inverter-based switched-capacitor circuit. The loop filter also employs input ...
  • LSPR and Interferometric Sensor Modalities Combined Using a Double-Clad Optical Fiber 

    Muri, Harald Ian; Bano, Andon; Hjelme, Dag Roar (Journal article; Peer reviewed, 2018)
    We report on characterization of an optical fiber-based multi-parameter sensor concept combining localized surface plasmon resonance (LSPR) signal and interferometric sensing using a double-clad optical fiber. The sensor ...
  • Interferometric and localized surface plasmon based fiber optic sensor 

    Muri, Harald Ian Di; Bano, Andon; Hjelme, Dag Roar (Journal article; Peer reviewed, 2017)
    We demonstrate a novel single point, multi-parameter, fiber optic sensor concept based on a combination of interferometric and plasmonic sensor modalities on an optical fiber end face. The sensor consists of a microFabry-Perot ...
  • Real-Time Data for Risk Assessment in the Offshore Oil and Gas Industry 

    Paltrinieri, Nicola; Landucci, Gabriele; Salvo Rossi, Pierluigi (Chapter, 2017)
    Recent major accidents in the offshore oil and gas (O&G) industry have showed inadequate assessment of system risk and demonstrated the need to improve risk analysis. While direct causes often differ, the failure to update ...
  • Towards Making a Cyborg: A Closed-Loop Reservoir-Neuro System 

    Aaser, Peter; Knudsen, Martinius; Huse Ramstad, Ola; van de Wijdeven, Rosanne; Nichele, Stefano; Sandvig, Ioanna; Tufte, Gunnar; Bauer, Ulrich Stefan; Halaas, Øyvind; Hendseth, Sverre; Sandvig, Axel; Valderhaug, Vibeke Devold (Chapter; Peer reviewed, 2017)
    The human brain is a remarkable computing machine, i.e. vastly parallel, self-organizing, robust, and energy efficient. To gain a better understanding into how the brain works, a cyborg (cybernetic organism, a combination ...
  • Nonlinear optical response and structural properties of MBE-grown Fe:ZnS films 

    Polyakov, Stanislav; Karhu, Eric Andrew; Zamiri, Reza; Moisset, Charles; Iliopoulos, Konstantinos; Vullum, Per Erik; Österberg, Ulf; Gibson, Ursula (Journal article; Peer reviewed, 2018)
    Fe-doped ZnS films of high optical quality were fabricated using vacuum vapor deposition. Preferential crystalline orientation and phase purity of the host ZnS films were increased by the addition of small amounts of Fe, ...
  • Ab Initio Studies of Functional Oxides for Thin Film Applications 

    Moreau, Magnus (Doctoral theses at NTNU;2017:352, Doctoral thesis, 2017)
    To continue the tremendous growth that the electronics industry has experienced over the last half-century, new energy efficient nanoscale devices are needed. One promising route towards this end is to introduce novel ...
  • Bathymetric and seasonal effects on the propagation of airgun signals to long distances in the Ocean 

    Tronstad, Tron; Hovem, Jens Martin (Chapter; Conference object, 2011)
    Marine seismic exploration uses air guns or air gun arrays to generate high energy, short duration acoustic pulses deep into the ocean floor but some of the seismic/acoustic energy remains in the water column and can ...
  • Propagation of anthropogenic noise in the ocean 

    Hovem, Jens Martin; Tronstad, Tron (Conference object; Lecture, 2012)
    Acoustic modeling technique is used to study long range propagation of airgun signals with emphasis on the low frequencies having impact on fish species of commercial interest, the frequency range from 25 Hz to 300 Hz. The ...
  • Determination of GaAs zinc blende/wurtzite band offsets utilizing GaAs nanowires with an axial GaAsSb insert 

    Ahtapodov, Lyubomir; Kauko, H; Munshi, A Mazid; Fimland, Bjørn-Ove; Van Helvoort, Antonius; Weman, Helge (Journal article; Peer reviewed, 2017)
    By applying a correlated micro-photoluminescence spectroscopy and transmission electron microscopy (TEM) approach, we have utilized molecular beam epitaxy grown self-catalysed GaAs nanowires (NWs) with an axial GaAsSb ...

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