Browsing Institutt for fysikk by Title
Now showing items 1676-1695 of 2661
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Optimizing hydroxyl airglow retrievals from long-slit astronomical spectroscopic observations
(Journal article; Peer reviewed, 2017)Astronomical spectroscopic observations from ground-based telescopes contain background emission lines from the terrestrial atmosphere's airglow. In the near infrared, this background is composed mainly of emission from ... -
Optimum operation of wave power converter
(Others, 1976) -
Ordering and Preferred Orientation in Films of Polymeric Semiconductors
(Dr. ingeniøravhandling, 0809-103X; 2002:145, Doctoral thesis, 2003)Various aspects related to molecular ordering and preferred orientation in films of polymeric semiconductors is presented. The polymers poly(alkylthiophene)s (PATs) and poly(3,4- ethylenedioxythiophene)s (PEDOTs), being ... -
Organic Contaminations in Sub-Marine AC and DC High-Voltage Cables
(Master thesis, 2012)In dielectric insulating materials subjected to alternating electric fields there are energy losses associated with polarization mechanisms and resistivity. A typical dielectric material used for insulation of high voltage ... -
Orientation dependent pinning of (sub)grains by dispersoids during recovery and recrystallization in an Al–Mn alloy
(Peer reviewed; Journal article, 2023)The recrystallized grain size and texture in alloys can be controlled via the microchemistry state during thermomechanical processing. The influence of concurrent precipitation on recovery and recrystallization is here ... -
Orientation effects on energy dispersive spectroscopy in TEM
(Master thesis, 2020)Energispredningsspektroskopi (EDX) er den mest brukte metoden for ̊a bestemme et ma-terials komposisjon p ̊a nanometer-skala ved transmisjonselektronmikroskoper(TEM). Re-sultatene p ̊avirkes av hvordan den innkommende ... -
Orientation relationship between b-Si3N4 and Si in multicrystalline silicon ingots for PV applications
(Journal article; Peer reviewed, 2018)β-Si3N4 particles are thought to be nucleation sites for silicon in multicrystalline silicon (mc-Si) ingots for PV applications. The orientation relationship (OR) between Si and β-Si3N4 has been investigated by transmission ... -
Orientation relationships of phase transformation in α-Al12Mn3Si pseudomorphs after plate-like Al6Mn precipitate in an AA3004 Al-Mn based alloy
(Journal article; Peer reviewed, 2017)The phase transformation in the plate-like precipitates of Al6Mn in an AA3004 Al-Mn based alloy, which was prepared by a chemical extraction technique, was investigated using transmission electron microscopy. The boiling-phenol ... -
Orientational mapping of minerals in Pierre shale using X-ray diffraction tensor tomography
(Peer reviewed; Journal article, 2021)Shales have a complex mineralogy with structural features spanning several length scales, making them notoriously difficult to fully understand. Conventional attenuation-based X-ray computed tomography (CT) measures density ... -
Origin of Leakage Currents and Nanowire-to-Nanowire Inhomogeneity in Radial p-i-n Junction GaAs Nanowire Array Solar Cells on Si
(Journal article; Peer reviewed, 2023)To realize the promising potential of radial junction nanowire (NW) array-based solar cells, it is crucial to get physical insight into how the overall photoconversion efficiency (PCE) is impacted by the hole mask properties, ... -
Oscillatory, ultradian movements in Arabidopsis: Biophysical studies of rhythms in plants onboard the International Space Station and on Earth
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:8, Doctoral thesis, 2009) -
Osteocyte-Like Cells Differentiated From Primary Osteoblasts in an Artificial Human Bone Tissue Model
(Peer reviewed; Journal article, 2023)In vitro models of primary human osteocytes embedded in natural mineralized matrix without artificial scaffolds are lacking. We have established cell culture conditions that favored the natural 3D orientation of the bone ... -
Osteogenic differentiation of human mesenchymal stem cells in mineralized alginate matrices
(Journal article; Peer reviewed, 2015)Mineralized biomaterials are promising for use in bone tissue engineering. Culturing osteogenic cells in such materials will potentially generate biological bone grafts that may even further augment bone healing. Here, ... -
Oxygen-Controlled Phase Segregation in Poly(N-isopropylacrylamide)/Laponite Nanocomposite Hydrogels
(Journal article; Peer reviewed, 2013) -
³¹P NMR- and high-resolution ¹H MAS NMR studies of intact cancer and bacterial cells : an experimental investigaton of the effects induced by the Ca2+-ionophore A23187, daunorubicin and ALA-PDT
(Doctoral thesis, 2001)NMR studies on cells have shown alterations in metabolic processes by the induction of apoptosis. The main purpose of the present study was to use NMR spectroscopic techniques to further elucidate metabolic and physiological ... -
p-wave triggered superconductivity in single layer graphene on an electron-doped oxide superconductor
(Journal article; Peer reviewed, 2017)Electron pairing in the vast majority of superconductors follows the Bardeen–Cooper–Schrieffer theory of superconductivity, which describes the condensation of electrons into pairs with antiparallel spins in a singlet state ... -
Palladium alloy model systems forunderstanding the surface properties of Pd-based membranes and catalysts
(Doctoral Theses at NTNU, 1503-8181; 2014:9, Doctoral thesis, 2014)Palladium has high solubility, permeability and selectivity for hydrogen, thus being a suitable membrane material for hydrogen separation. In addition, palladium is a versatile catalyst with applications in industrial ... -
Parallel Instabilities in Two-Phase Flow in Porous Media
(Master thesis, 2014)Two immiscible fluids flowing in parallel with respect to the interface separating them in a two-dimensional porous medium has been studied using a dynamic network model. Two immiscible fluids, one wetting and the other ... -
Parallel integration of aligned carbon strings in polymer composite: Dielectrophoretic preparation, finite element simulation, and electrical characterization
(Journal article; Peer reviewed, 2015)We report on dielectrophoretic alignment of carbon black particles into radially arranged string-like assemblies in oligourethane mixtures followed by photopolymerization. Using finite element modelling and optical microscopy ... -
Parallel Integration of Aligned Carbon Strings in Polymer Matrix: Dielectrophoretic Preparation, Electrical and Electromechanical Characterisation
(Master thesis, 2012)Carbon black particles have been aligned into string-like assemblies by dielectrophoresis. Particles were dispersed in Dymax Ultra Light-Weld 3094 oligomermixture, with 0.1 vol.% filler content. This mixture was spread ...