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Porous Coatings Containing Copper and Phosphorus Obtained by Plasma Electrolytic Oxidation of Titanium
(Journal article; Peer reviewed, 2020)To fabricate porous copper coatings on titanium, we used the process of plasma electrolyticoxidation (PEO) with voltage control. For all experiments, the three-phase step-up transformer withsix-diode Graetz bridge was used. ... -
Positive Partial Transpose States in Multipartite Quantum Systems
(Master thesis, 2012)In this master thesis I study the extremal positive partial transpose (PPT) states of the three qubit $(2times2times2)$ system using numerical methods. Using two algorithms which locate PPT states of a specified rank and ... -
Possible odd-frequency Amperean magnon-mediated superconductivity in topological insulator–ferromagnetic insulator bilayer
(Journal article; Peer reviewed, 2020)We study the magnon-mediated pairing between fermions on the surface of a topological insulator (TI) coupled to a ferromagnetic insulator with a tilted mean field magnetization. Tilting the magnetization toward the interfacial ... -
Potential Intermediate Band Materials: Fabrication and Ellipsometric studies
(Doctoral theses at NTNU;2023:268, Doctoral thesis, 2023)Dagens mest brukte solcelleteknologi nærmer seg den øvre teoretiske grensen for hvor effektivt den kan omgjøre sollys til elektrisitet. For å kunne lage enda mer effektive solceller trenger man derfor å benytte seg av ny ... -
Potential of Deep Learning in Quantitative Magnetic Resonance Imaging for Personalized Radiotherapy
(Peer reviewed; Journal article, 2022)Quantitative magnetic resonance imaging (qMRI) has been shown to provide many potential advantages for personalized adaptive radiotherapy (RT). Deep learning models have proven to increase efficiency, robustness and speed ... -
Potential Oxide-Based Intermediate Band Materials: Fabrication and Photoemission Studies
(Doctoral theses at NTNU;2020:83, Doctoral thesis, 2020)Intermediate band solar cells (IBSCs) is a so-called third generation solar cell concept, and are based on a new type of semiconductor materials which have an intermediate band (IB) within the bandgap. This IB works as a ... -
Precipitate formation in aluminium alloys: Multi-scale modelling approach
(Peer reviewed; Journal article, 2020)Ternary Al–Mg–Si alloys have been modelled based on a multi-scale approach that spans across atomistic and mesoscale models and uses theoretically determined parameters. First, a cluster expansion model for total energy ... -
Precipitate statistics in an Al-Mg-Si-Cu alloy from scanning precession electron diffraction data
(Journal article; Peer reviewed, 2017)The key microstructural feature providing strength to age-hardenable Al alloys is nanoscale precipitates. Alloy development requires a reliable statistical assessment of these precipitates, in order to link the microstructure ... -
Precipitate Structure Changes during Overaging in an Al-Mg-Si Alloy
(Master thesis, 2012)Starting from a super saturated solid solution and two different conditions withβ′′ precipitates (T6) an Al-Mg-Si alloy was heat treated at 200◦C and investigated byhardness measurements. One of the T6 conditions was ... -
Precipitate/matrix incompatibilities related to the {111}Al Ω plates in an Al-Cu-Mg-Ag alloy
(Journal article; Peer reviewed, 2021)The atomic structure of Ω plates forming on {111}Al planes in an Al-Cu-Mg-Ag alloy has been investigated by Z-contrast atomic-resolution scanning transmission electron microscopy imaging and ab initio density functional ... -
Precipitates in aluminium alloys
(Journal article; Peer reviewed, 2018)Precipitation strengthening is a highly complex phenomenon on the nanoscale, responsible for providing strength in Al-Cu, Al-Mg-Cu, Al-Mg-Zn and Al-Mg-Si alloys. Advances in methodology, especially high-angle annular ... -
Precipitation behavior in an Al-Cu-Mg-Si alloy during ageing
(Peer reviewed; Journal article, 2019)The precipitation behavior and aging response of an Al-4.9Cu-0.74Mg-0.51Si-0.48Mn-0.1Cr-0.08Ti-0.02Fe (wt. %) alloy was examined in detail after aging at 170 °C with different dwell times up to 96 h. Deformation by ... -
Precipitation behavior in an Al-Cu-Mg-Si alloy during ageing
(Peer reviewed; Journal article, 2019)The precipitation behavior and aging response of an Al-4.9Cu-0.74Mg-0.51Si-0.48Mn-0.1Cr-0.08Ti-0.02Fe (wt. %) alloy was examined in detail after aging at 170 °C with different dwell times up to 96 h. Deformation by ... -
Precipitation behavior of Al-Si-Cu-Mg(-Fe) alloys by a deformation-semisolid extrusion process
(Journal article; Peer reviewed, 2021) -
Precipitation behavior of Al-Si-Cu-Mg(-Fe) alloys by a deformation-semisolid extrusion process
(Journal article; Peer reviewed, 2021)Al-4.5Si-1Cu-0.3Mg(-1Fe) (wt%) alloys fabricated by a deformation-semisolid extrusion (D-SSE) process have been investigated by transmission electron microscopy, down to the atomic level. T5 and T6 heat treatments were ... -
Precipitation in a mixed Al-Cu-Mg/Al-Zn-Mg alloy system
(Journal article, 2016)The precipitation-hardened alloy systems Al–Cu–Mg (2xxx) and Al–Zn–Mg (7xxx) were compositionally combined from a base alloy containing 2% Cu and 1% Mg, added 1–4% Zn (weight fractions). Precipitates in these alloys were ... -
Precipitation in an Al-Mg-Cu alloy and the effect of a low amount of Ag
(Journal article, 2016)Two high-purity aluminium alloys based on composition Al–3.0Mg–1.0Cu (wt%), one with added 0.4 wt% Ag, were compared up to 11 days ageing at 443 K by means of transmission electron microscopy and hardness measurements. The ... -
Precipitation in an extruded AA7003 aluminium alloy: Observations of 6xxx-type hardening phases
(Journal article; Peer reviewed, 2019)Precipitation behaviour in an industrially extruded AA7003 alloy has been studied using Transmission Electron Microscopy (TEM) together with Differential Scanning Calorimetry (DSC). Air Cooling (AC) after solution heat ... -
Precipitation in multicomponent, lean, Al-Mg-Si alloys: A transmission electron microscopy study
(Doctoral thesis at NTNU;2016:266, Doctoral thesis, 2016)Aluminium alloys have a number of versatile applications, and there are numerous alloys in production today, where a variety of solute additions and heat treatments are applied. This work focusses on lean, age-hardenable ... -
Precipitation, mechanical properties and early slant ductile fracture in cyclic and naturally aged Al-Zn-Mg(-Cu) alloys
(Peer reviewed; Journal article, 2022)Natural and artificial ageing treatments are compared with ageing by cyclic deformation at room temperature. Atom probe tomography and transmission electron microscopy revealed that a fine distribution of GP-zones, was ...