Browsing Institutt for fysikk by Title
Now showing items 1946-1965 of 2657
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Renormalised Intrinsic and Extrinsic Impurity Induced Spin-orbit Scattering in Graphene
(Master thesis, 2012)We study the effect of an impurity potential on spin-memory loss in graphene. Various general methods for finding the spin-orbit related effect of a slowly varying impurity potential on a semiconductor have been examined. ... -
Replacement of Ensemble Averaging by the Use of a Broadband Source in Scattering of Light from a One-Dimensional Randomly Rough Interface between Two Dielectric Media
(Journal article; Peer reviewed, 2018)By the use of phase perturbation theory we show that if a single realization of a one-dimensional randomly rough interface between two dielectric media is illuminated at normal incidence from either medium by a broadband ... -
Research and development in ocean-wave energy in Norway
(Chapter, 1993) -
Residual strain in free-standing CdTe nanowires overgrown with HgTe
(Journal article; Peer reviewed, 2019)We investigate the crystal properties of CdTe nanowires overgrown with HgTe. Scanning electron microscopy and scanning transmission electron microscopy confirm that the growth results in a high ensemble uniformity and that ... -
Residual stress measurements in offshore wind monopile weldments using neutron diffraction technique and contour method
(Journal article; Peer reviewed, 2018)Reliable assessment of the fatigue life of offshore wind monopiles operating in harsh offshore environments relies on quantifying the level of residual stresses locked-in at circumferential weld regions. This study presents, ... -
Resolved gravity waves in a high-resolution model
(Master thesis, 2022)Denne avhandlingen undersøker interaksjonen mellom planetære bølger og gravitasjonsbølger i en høyoppløst atmosfære modell. Luftstrømning over fjellterreng på jordens overflate kan skape gravitasjonsbølger. Amplituden ... -
Resonant Ultrasonic System Design, and Measurements of Critical Behaviour and Flux-Line Elasticity in High Temperature Superconductors
(Dr. ingeniøravhandling, 0809-103X; 2000:82, Doctoral thesis, 2001) -
Responsive Hydrogels for Label-Free Signal Transduction within Biosensors
(Journal article; Peer reviewed, 2010)Hydrogels have found wide application in biosensors due to their versatile nature. This family of materials is applied in biosensing either to increase the loading capacity compared to two-dimensional surfaces, or to support ... -
Restriction spectrum imaging with elastic image registration for automated evaluation of response to neoadjuvant therapy in breast cancer
(Peer reviewed; Journal article, 2023)Purpose: Dynamic contrast-enhanced MRI (DCE) and apparent diffusion coefficient (ADC) are currently used to evaluate treatment response of breast cancer. The purpose of the current study was to evaluate the three-component ... -
Results from the intercalibration of optical low-light calibration sources 2011
(Journal article; Peer reviewed, 2011)Following the 38th Annual European Meeting on Atmospheric Studies by Optical Methods in Siuntio in Finland, an intercalibration workshop for optical low light calibration sources was held in Sodankyla, Finland. The main ¨ ... -
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution
(Journal article; Peer reviewed, 2014)In situ synchrotron X-ray radiography of columnar dendritic growth in Al–15 wt.% Cu–9 wt.% Si–0.015 wt.% Sr alloy has been carried out with the temporal and spatial resolutions of 100 ms and 0.65 μm, respectively. ... -
Revealing internal flow behaviour in arc welding and additive manufacturing of metals
(Journal article; Peer reviewed, 2018)Internal flow behaviour during melt-pool-based metal manufacturing remains unclear and hinders progression to process optimisation. In this contribution, we present direct time-resolved imaging of melt pool flow dynamics ... -
Revealing the Heterogeneous Nucleation and Growth Behaviour of Grains in Inoculated Aluminium Alloys During Solidification
(Peer reviewed; Journal article, 2019)An in situ X-ray radiographic study on the grain nucleation and grain growth of inoculated Al–10Cu and Al–20Cu alloys during isothermal melt solidification and directional solidification conditions with constant cooling ... -
Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification
(Journal article, 2018)An in-situ study on the directional solidification of an inoculated Al-20 wt%Cu alloy under well-controlled constant cooling rates and temperature gradients has been carried out using a microfocus X-radiography set-up. The ... -
Reversal and termination of current-induced domain wall motion via magnonic spin-transfer torque
(Journal article; Peer reviewed, 2012)We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba ... -
Reversal of the negative natural aging effect in Al-Mg-Si alloys
(Journal article, 2012)The effect of solute clustering on subsequent precipitation has been investigated for three different Al–Mg–Si alloys with similar Mg/Si ratios but different Mg + Si contents. Hardness measurements were carried out (i) ... -
Reversed Hysteresis during CO Oxidation over Pd75Ag25(100)
(Journal article; Peer reviewed, 2016)CO oxidation over Pd(100) and Pd75Ag25(100) has been investigated by a combination of near-ambient-pressure X-ray photoelectron spectroscopy, quadrupole mass spectrometry, density functional theory calculations, and ... -
Revisiting cosmic ray antinuclei fluxes with a new coalescence model
(Peer reviewed; Journal article, 2020)Antideuteron and antihelium nuclei have been proposed as promising detection channels for dark matter because of the low astrophysical backgrounds expected. To estimate both potential exotic contributions and their ... -
Rheology of high-capillary number two-phase flow in porous media
(Journal article; Peer reviewed, 2019)Flow of immiscible fluids in porous media at high capillary numbers may be characterized by an effective viscosity. We demonstrate that the effective viscosity is well-described by the Lichtenecker-Rother equation. Depending ... -
Rigid Body Attitude Control
(Master thesis, 2014)Geometric numerical integration schemes have been studied for rigid body attitudecontrol problems. We consider symplectic integrators and present a Lie group varia-tional integrator and a discrete gradient method. The two ...