Browsing Det matematisk-naturvitenskapelige fakultet by Title
Now showing items 430-449 of 838
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)The carbon vacancy (VC) is a major limiting-defect of minority carrier lifetime in n-type 4H-SiC epitaxial layers and it is readily formed during high temperature processing. In this study, a kinetics model is put forward ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)We herein report tests at high temperatures of a 4-leg oxide thermoelectric generator consisting of two pairs of p-type Ni0.98Li0.02O (Li–NiO) and n-type Zn0.98Al0.02O (Al–ZnO), assembled with various conducting perovskite ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)La2Ce2O7 is known to be a disordered fluorite, i.e., 50% La-doped CeO2, exhibiting oxide ion conduction with contributions from protons in wet atmospheres and minority electrons under reducing conditions. Here, we report ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Geophysical granular flows exert basal forces that generate seismic signals, which can be used to better monitor and model these severe natural hazards. A number of empirical relations and existing models link these signals' ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The mechanics of magma emplacement in the Earth's crust corresponds to the flow of a viscous fluid into a deforming solid. The Earth's crust through which magma is emplaced is visco-elasto-plastic, and field observations ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Climate and land-use changes are leading to impacts on individual ecosystems as well as shifts in transfer dynamics between interconnected systems. At the land-ocean interface, changes in riverine inputs of organic matter ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Agricultural, forestry‐impacted and natural catchments are all vectors of nutrient loading in the Nordic countries. Here, we present concentrations and fluxes of total nitrogen (totN) and phosphorus (totP) from 69 Nordic ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Issues related to use of metallic interconnects in oxide thermoelectric generators (TEGs) need to be addressed to secure performance and durability. Metal interconnects suffer from high cost of noble metals or chemical ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Abstract The Fennoscandian Shield in central Sweden displays a complex structural and compositional architecture that is mainly related to the Proterozoic history of the Baltica paleocontinent. In its western ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Humeri of Pessopteryx nisseri and vertebrae referred to Cymbospondylus sp. are described from the Lower Saurian niveau at Marmierfjellet, Spitsbergen. This is the most well-preserved Cymbospondylus material described from ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The implantation of aluminum into 4H-SiC is studied using secondary ion mass spectrometry. In particular, two-dimensional concentration profiles are obtained, which allow the investigation of lateral straggling and its ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Subarctic peatlands underlain by permafrost contain significant amounts of organic carbon. Our ability to quantify the evolution of such permafrost landscapes in numerical models is critical for providing robust predictions ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2021)Low lattice thermal conductivity is essential for high thermoelectric performance of a material. Lattice thermal conductivity is often computed using density functional theory (DFT), typically at a high computational cost. ...
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(Master thesis / Masteroppgave, 2023)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)II–IV nitrides and their alloys represent an earth-abundant and potentially cost-efficient alternative to the well-developed AlN-GaN-InN system. A major drawback with the II–IV nitrides is that ZnSnN2, the lowest band gap ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Lithium fluoride (LiF) is an integral part of UV optics. Recently, it has also gained attention for its role in the solid-electrolyte interphase on the anode of lithium-ion batteries. Atomic layer deposition (ALD) is the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Demographic buffering and lability have been identified as adaptive strategies to optimise fitness in a fluctuating environment. These are not mutually exclusive, however, we lack efficient methods to measure their relative ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Crystallization pressure drives deformation and damage in monuments, buildings, and the Earth’s crust. Even though the phenomenon has been known for 170 years, there is no agreement between theoretical calculations of the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)We present detailed characteristics of linear polarization features (LPFs) in the quiet-Sun photosphere from high-resolution observations obtained with SUNRISE/IMaX. We explore differently treated data with various noise ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)To constrain the impact of preexisting mechanical weaknesses on strain localization culminating in macroscopic shear failure, we simulate triaxial compression of layered sedimentary rock using three-dimensional discrete ...