Browsing Det matematisk-naturvitenskapelige fakultet by Title
Now showing items 358-377 of 838
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)A solid-state photoelectrochemical (SSPEC) cell is an attractive approach for solar water splitting, especially when it comes to monolithic device design. In a SSPEC cell the electrodes distance is minimized, while the use ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Elasto-plastic fracture toughness tests of a commercially pure iron were performed in air and in hydrogen gas at two different pressures. Some unique characteristics of hydrogen-enhanced cracking were exhibited at both the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Hydrogen (H) is thought to be strongly involved in the light and elevated temperature-induced degradation observed predominantly in p-type silicon wafers, but the nature of the defect or defects involved in this process ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Metal–organic frameworks (MOFs) show great prospect as catalysts and catalyst support materials. Yet, studies that address their dynamic, kinetic, and mechanistic role in target reactions are scarce. In this study, an ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)With the increasing demand for green energy, there is a great urgency to develop perm-selective, economical and robust membranes for applications in fuel cells. Metal–organic frameworks are attractive materials for this ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)The ability to achieve highly resistive beta-phase gallium oxide (β-Ga2O3) layers and substrates is critical for β-Ga2O3 high voltage and RF devices. To date, the most common approach involves doping with iron (Fe), which ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2022)Surface treatment after dry etching is vital to enhance the surface quality of the material and thus improve device performance. In this Letter, we identified the majority surface states induced by the dry etching of β-Ga2O3 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Photoelectron spectroscopy is a powerful characterisation tool for semiconductor surfaces and interfaces, providing in principle a correlation between the electronic band structure and surface chemistry along with quantitative ...
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(Chapter / Bokkapittel / SubmittedVersion, 2021)High-Entropy Alloys are advanced technological materials composed of several (typically five) elements in nearly equal atomic concentration. By forming these alloys, previously unknown phase fields of multidimensional phase ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)Strain localisation structures, such as shear fractures and compaction bands, are of importance due to their influence on permeability and therefore outgassing, a factor thought to influence eruptive style. In this study, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Hydrogenases are attractive biocatalysts for utilization in electrochemical devices as potential replacement for Pt in hydrogen evolving electrodes. In this work, we investigate the immobilization of ferredoxin tagged ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Rock failure accommodating the emplacement of magmatic intrusions is controlled by the local stress regime within the host rock. Most of the mechanical models addressing rock failure conditions (e.g., for a given tectonic ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)In this study, the results of hydrogen plasma treatments of β-Ga2O3, α-Ga2O3, κ-Ga2O3 and γ-Ga2O3 polymorphs are analyzed. For all polymorphs, the results strongly suggest an interplay between donor-like hydrogen configurations ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Here, we report the synthesis and magnetic properties of a novel, centrosymmetric, quasi-1D spin chain system La3VWS3O6, with hexagonal crystal structure (P63/m, a = 9.460 76(3), c = 5.518 09(2) Å). Pure powders were ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)We use 3D magnetohydrodynamic CO5BOLD model atmospheres to study the interplay between magnetic fields and convection in the atmospheres of red giant stars. We find that vortex-like structures occur prominently in stars ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Sills emplaced in organic-rich sedimentary rocks trigger the generation and migration of hydrocarbons in volcanic sedimentary basins. Based on seismic and geological observations, numerical modeling studies of hydrothermal ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Polycrystalline cuprous oxide (Cu2O) thin films were sputtered, annealed (900 °C rapid thermal annealing) and subsequently implanted with various hydrogen ion (H+) doses from 5E13 to 2E15 cm−2 with a low acceleration energy ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)In the present study, a series of H-ZSM-22 mesoporous catalysts resulting from three different desilication treatments (NaOH treatment, treatment using mixtures of NaOH/CTAB and using mixtures of NaOH/TBAOH) and sequential ...