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Ski lifts, bowling balls, pipe system or waterfall? Lower secondary students’ understanding of analogies for electric circuits.
(Peer reviewed; Journal article, 2020)Electric circuits are challenging for students to understand, and a wide range of analogies are developed in order to support their learning. This article investigates how lower secondary students understand four analogies ... -
Gender Differences in Norwegian Engineering Students’ Understanding of Newtonian Mechanics
(Peer reviewed; Journal article, 2020)An investigation of the gender gap in engineering students’ understanding of Newtonian physics has been done. The results indicate a noticeable gender gap, in addition to an effect due to differences in preparation, i.e. ... -
The Hubble tension and electromagnetic waves in curved spacetime
(Master thesis, 2022)Måling av dagens verdi av Hubble-parameteren H_0 med type 1a supernovaer som standard candles gir H_0 = 73.7+-1.4 km/s/Mpc, mens måling ved hjelp av CMB som standard ruler gir H_0 = 67.4+-0.5 km/s/Mpc. Dette er et problem. ... -
Migrating tide climatologies measured by a high-latitude array of SuperDARN HF radars
(Peer reviewed; Journal article, 2020)This study uses hourly meteor wind measurements from a longitudinal array of 10 high-latitude SuperDARN high-frequency (HF) radars to isolate the migrating diurnal, semidiurnal, and terdiurnal tides at mesosphere–lower-t ... -
Bose–Einstein condensation of nonequilibrium magnons in confined systems
(Peer reviewed; Journal article, 2020)We study the formation of a room temperature magnon Bose–Einstein condensate (BEC) in nanoscopic systems and demonstrate that its lifetime is influenced by the spatial confinement. We predict how dipolar interactions and ... -
“Never at rest”: developing a conceptual framework for descriptions of ‘force’ in physics textbooks
(Peer reviewed; Journal article, 2020)The concept of ‘force’ is abstract and challenging for many physics students, and many studies have revealed misconceptions that hinder students’ understanding and learning in classical physics. One reason for this may be ... -
Phase-controlled spin and charge currents in a superconductor-ferromagnet hybrid
(Peer reviewed; Journal article, 2020)We investigate spin-dependent quasiparticle and Cooper-pair transport through a central node interfaced with two superconductors and two ferromagnets. We demonstrate that voltage biasing of the ferromagnetic contacts induces ... -
Tyrosine Side-Chain Functionalities at Distinct Positions Determine the Chirooptical Properties and Supramolecular Structures of Pentameric Oligothiophenes
(Peer reviewed; Journal article, 2020)Control over the photophysical properties and molecular organization of π-conjugated oligothiophenes is essential to their use in organic electronics. Herein we synthesized and characterized a variety of anionic pentameric ... -
Insulin amyloid polymorphs: implications for iatrogenic cytotoxicity†
(Peer reviewed; Journal article, 2020)Amyloid specific fluorescent probes are becoming an important tool for studies of disease progression and conformational polymorphisms in diseases related to protein misfolding and aggregation such as localized and systemic ... -
Effective Rheology of Bi-viscous Non-newtonian Fluids in Porous Media
(Peer reviewed; Journal article, 2020)We model the flow of bi-viscous non-Newtonian fluids in porous media by a square lattice where the links obey a piece-wise linear constitutive equation. We find numerically that the flow regime, where the network transitions ... -
Highly tunable exchange-only singlet-only qubit in a GaAs triple quantum dot
(Peer reviewed; Journal article, 2020)We propose an implementation of a singlet-only spin qubit in a GaAs-based triple quantum dot with a (1, 4, 1) charge occupation. In the central multielectron dot, the interplay between Coulomb interaction and an out-of-plane ... -
Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
(Peer reviewed; Journal article, 2020)Antiferromagnetic materials can host spin-waves with polarizations ranging from circular to linear depending on their magnetic anisotropies. Until now, only easy-axis anisotropy antiferromagnets with circularly polarized ... -
Net optical parametric gain in a submicron silicon core fiber pumped in the telecom band
(Peer reviewed; Journal article, 2019)A silicon core fiber (SCF) has been designed and fabricated with a dispersion engineered profile to support broadband optical parametric amplification across the telecom window. The combination of low optical transmission ... -
Creep failure in a threshold-activated dynamics: Role of temperature during a subcritical loading
(Peer reviewed; Journal article, 2020)Creep is a time-dependent deformation of solids at relatively low stresses, leading to the breakdown with time. Here we propose a simple model for creep failure of disordered solids in which temperature and stress are ... -
Phase transitions and correlations in fracture processes where disorder and stress compete
(Peer reviewed; Journal article, 2020)We study the effect of the competition between disorder and stress enhancement in fracture processes using the local load sharing fiber bundle model, a model that hovers on the border between analytical tractability and ... -
Stochastic inflation from quantum field theory and the parametric dependence of the effective noise amplitude
(Journal article; Peer reviewed, 2022) -
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 ... -
Degradation of insulin amyloid by antibiotic minocycline and formation of toxic intermediates
(Peer reviewed; Journal article, 2021)Insulin balls, localized insulin amyloids formed at subcutaneous insulin-injection sites in patients with diabetes, cause poor glycemic control owing to impairments in insulin absorption. Our previous study has shown that ... -
Amphiphilic Protoporphyrin IX Derivatives as New Photosensitizing Agents for the Improvement of Photodynamic Therapy
(Peer reviewed; Journal article, 2022)Photodynamic therapy (PDT) is a non-invasive therapeutic modality based on the interaction between a photosensitive molecule called photosensitizer (PS) and visible light irradiation in the presence of oxygen molecule. ... -
Heat Treatment of Mg-Containing Aluminum Alloys 5182 and 6016 in an Oxidizing Atmosphere with 4% CO2
(Peer reviewed; Journal article, 2022)Oxidation of liquid aluminum (Al) during processing is a widely known problem, and magnesium (Mg), as a common alloying element, increases the oxidation rate of the alloy. It has been established that small additions of ...
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