Department of Physics and Technology
Nye registreringer
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The nonlinearities in the galvanostatic charging curves of supercapacitors provide insights into charging mechanisms
(Journal article; Peer reviewed, 2022)Supercapacitors are often charged using constant currents. The capacitance can be determined from the slope of the voltage-time curve if the measured voltage over the supercapacitor increases linearly with time. However, ... -
Substantial Sparing of Organs at Risk with Modern Proton Therapy in Lung Cancer, but Altered Breathing Patterns Can Jeopardize Target Coverage
(Journal article; Peer reviewed, 2022-03-08)Enhancing treatment of locally advanced non-small cell lung cancer (LA-NSCLC) by using pencil beam scanning proton therapy (PBS-PT) is attractive, but little knowledge exists on the effects of uncertainties occurring between ... -
Pore-scale bubble population dynamics of CO2-foam at reservoir pressure
(Journal article; Peer reviewed, 2022)The flow of CO2 foam for mobility control in porous media is dictated by the foam texture, or bubble density, which is commonly expressed as the number of bubbles per unit of flowing gas. In most high-pressure laboratory ... -
Interaction of three-dimensional acoustic beam with fluid-loaded solid plate: Axial near- to far-field transmission at normal beam incidence
(Journal article; Peer reviewed, 2022)Axial radiation from leaky Lamb waves propagating in a 6.05 mm water-immersed steel plate being excited by a sound beam normally incident to the plate, is investigated as a function of axial distance, z, and frequency, f, ... -
Dynamic Susceptibility Contrast MRI May Contribute in Prediction of Stereotactic Radiosurgery Outcome in Brain Metastases
(Journal article; Peer reviewed, 2022)Background Following stereotactic radiosurgery (SRS), predicting treatment response is not possible at an early stage using structural imaging alone. Hence, the current study aims at investigating whether dynamic ... -
On the design of Neutral Scanning Helium Atom Microscopes (SHeM) : Optimal configurations and evaluation of experimental findings
(Doctoral thesis, 2021-11-09)Scanning Helium Microscopes (SHeMs) are novel microscopy tools using neutral helium atoms as the imaging probe. Helium atoms have several advantages compared to other probes such as electrons or helium ions. Helium atoms ... -
Finite-amplitude sound propagation effects in volume backscattering measurements for fish abundance estimation
(Journal article; Peer reviewed, 2022)Scientific advice for governmental management of marine resources relies on acoustical observation methods. Quantification and identification of fish and plankton species are often achieved using multi-frequency acoustic ... -
Photothermal conversion of biodegradable fluids and carbon black nanofluids
(Journal article; Peer reviewed, 2022)The paper is devoted to the topic of direct absorption solar collectors (DASCs). Various kinds of fluids can be used as heat transfer fluid in DASCs, and the main focus of our paper is on comparing nanofluids (water with ... -
Photothermal convection of a magnetic nanofluid in a direct absorption solar collector
(Journal article; Peer reviewed, 2022)Nanofluid-based direct absorption of solar heat results in thermal efficiencies superior to conventional solar thermal technology. In addition, convection of nanofluid can be sustained pump-free in the collector. In this ... -
Experimental investigation of erosion due to nanofluids
(Journal article; Peer reviewed, 2022)The demand for efficient and sustainable energy is continuously increasing. Among the many technologies with great potential within this field are nanofluids. Nevertheless, there is still a considerable lack of information ... -
Comparative study on the uniform energy deposition achievable via optimized plasmonic nanoresonator distributions
(Journal article; Peer reviewed, 2022)Plasmonic nanoresonators of core–shell composition and nanorod shape were optimized to tune their absorption cross-section maximum to the central wavelength of a short laser pulse. The number density distribution of randomly ... -
New, spherical solutions of non-relativistic, dissipative hydrodynamics
(Journal article; Peer reviewed, 2022)We present a new family of exact solutions of dissipative fireball hydrodynamics for arbitrary bulk and shear viscosities. The main property of these solutions is a spherically symmetric, Hubble flow field. The motivation ... -
Experimental study of hydrogen production using electrolyte nanofluids with a simulated light source
(Journal article; Peer reviewed, 2022)In this research, we conducted water electrolysis experiments of a carbon black (CB) based sodium sulfate electrolyte using a Hoffman voltameter. The main objective was to investigate hydrogen production in such systems, ... -
Search for flavour-changing neutral-current interactions of a top quark and a gluon in pp collisions at √s=13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2022)A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark. Two production processes are considered: ... -
Types of pulsating aurora: Comparison of model and EISCAT electron density observations
(Journal article; Peer reviewed, 2022)Energetic particle precipitation associated with pulsating aurora (PsA) can reach down to lower mesospheric altitudes and deplete ozone. It is well documented that pulsating aurora is a common phenomenon during substorm ... -
Readout Electronics for the Upgraded ITS Detector in the ALICE Experiment
(Doctoral thesis, 2022-06-03)ALICE is undergoing upgrades during the Long Shutdown (LS) 2 of the LHC to improve its performance and capabilities, and to prepare the experiment for the increases in luminosity provided by the LHC in Run 3 and Run 4. One ... -
Cutoff Latitudes of Solar Proton Events Measured by GPS Satellites
(Journal article; Peer reviewed, 2022)Solar energetic particles (SEPs), one of the main causes of particle radiation in interplanetary space, can disrupt radio communication, induce spacecraft failures and change the heating and cooling rates in the atmosphere ... -
Quantitative Magnetic Resonance Imaging of Tissue Microvasculature and Microstructure in Selected Clinical Applications
(Doctoral thesis, 2022-06-03)This thesis is based on four papers and aims to establish perfusion and diffusion measurements with magnetic resonance imaging (MRI) in selected clinical applications. While structural imaging provides invaluable geometric ... -
Problem solving in basic physics: Effective self-explanations based on four elements with support from retrieval practice
(Journal article; Peer reviewed, 2022)Self-explanation, a learning strategy where students explain to themselves the steps taken in a worked example, is an effective learning strategy in early cognitive skill acquisition. However, many physics students produce ... -
Modelling of gas hydrates in sedimentary systems : Methane hydrates impact on flow through porous media
(Doctoral thesis, 2022-04-06)In nature, gas hydrates exist in areas of permafrost and in shallow subsurface sediments at ocean depths of more than 300-500 metres. In terms of the Sustainable Development Goals (SDG) of the United Nations, better ...
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