Browsing NTNU Open by Title
Now showing items 70541-70560 of 101211
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Photocorrosion of n- and p-Type Semiconducting Oxide-Covered Metals: Case Studies of Anodized Titanium and Copper
(Peer reviewed; Journal article, 2022)Illumination affects corrosion of oxide-covered metals via photoinitiated dissolution processes. Herein, anodized titanium with n-type semiconducting anatase TiO2 and anodized copper with p-type semiconducting cuprite Cu2O ... -
Photodynamic Effects with 5-Aminolevulinic Acid on Cytokines and Exosomes in Human Peripheral Blood Mononuclear Cells
(Peer reviewed; Journal article, 2022)Photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA), a precursor to the potent photosensitizer, protoporphyrin IX (PpIX), is an established modality for several malignant and premalignant diseases. This treatment ... -
Photodynamic effects with 5-aminolevulinic acid on cytokines and exosomes in human peripheral blood mononuclear cells from patients with Crohn’s disease
(Peer reviewed; Journal article, 2023)Photodynamic therapy (PDT) using 5-aminolevulinic acid (ALA) which is the precursor of the photosensitizer protoporphyrin IX (PpIX) is an available treatment for several diseases. ALA-PDT induces the apoptosis and necrosis ... -
Photodynamic Therapy with Novel Glycosylated Chlorin Complexes on Bladder Cancer Cells from Rat (AY-27) and Human (T-24)
(Master thesis, 2021)Formålet med dette masterprosjektet var å utforske fotodynamiske, fotofysiske og fotokjemiske egenskaper til noen nye glykosylerte kloriner. Dette prosjektet er en del av et pågående samarbeid mellom Institutt for fysikk, ... -
Photoelectrochemical Characterization of Dye-sensitized Solar Cells
(Master thesis, 2018)Dye-sensitized solar cells, DSSCs, are thin film solar cells based on a photoelectrochemical system where a photo-sensitized anode and an electrolyte forms a semiconductor. Upon exposure of sunlight, the surface of the ... -
Photoelectrochemical Hydrogen Production
(Master thesis, 2012)The possibilities for using CaNb2O6 as a photocatalyst in direct water splitting have been evaluated by investigating the electronic structure of the material. In addition the oxide was doped with nitrogen in order to ... -
Photoemission spectroscopies and their application in solid state and material physics
(Doctoral thesis at NTNU;2016:97, Doctoral thesis, 2016)Understanding the electronic properties of solid state systems is of fundamental importance to all matter. In particular, understanding and tailoring the properties of bound electrons in materials is an indispensable step ... -
Photogrammetry for Drone Inspections: Introducing Advanced Path Planning for Automated Drone Operations
(Master thesis, 2018)Some ideas and procedures for realizing a system for automated inspection of structures have been presented throughout this thesis. The few presented results shows a reliable procedure for estimating normals in a coarse ... -
Photogrammetry-based 3D scanning for supporting design activities and testing in early stage product development
(Peer reviewed; Journal article, 2021)In the early stages of product development and design, physical prototypes are designed and built from varying materials with the aim of providing valuable experience and decision support for the project team. In the era ... -
Photography - A New Tool in Needfinding
(Chapter, 2015)In this paper we are proposing the use of photography as a dedicated tool to capture latent needs and create anchor points for future solutions in engineering design. We are grounded in user centric design. Based on a ... -
Photography - Bridging the Gap between Needfinding and Visual Thinking
(Master thesis, 2015)Founding on the pre-master project Photography a new tool in needfinding (Wulvik et al., 2015) as starting point and based on theory from the fields of needfinding and visual thinking, an explorative experiment has ... -
Photoionization model for streamer propagation mode change in simulation model for streamers in dielectric liquids
(Journal article; Peer reviewed, 2019)Radiation is important for the propagation of streamers in dielectric liquids. Photoionization is a possibility, but the effect is difficult to differentiate from other contributions. In this work, we model radiation from ... -
Photoluminescence of InAs/Ga(N)As quantum dot intermediate band solar cells
(Master thesis, 2014)In this thesis InAs/Ga(N)As quantum dot intermediate band solar cells (QDIBSCs) are studied using photoluminescence (PL) spectroscopy. The samples in this thesis have been complete QD-IBSCs with doping in the substrate, the ... -
Photoluminescence study of as-grown self-catalyzed GaAs/AlGaAs core-shell nanowires
(Master thesis, 2012)A macro-photoluminescence study of self-catalyzed nanowires, using a specializedsetup for this purpose, has been performed. Several samples were even comparedto single nanowire micro-photoluminescence measurements, on the ... -
Photoluminescence Study of Enhanced Light Emission from HgCdTe Thin Films due to a Surface Pattern
(Master thesis, 2015)HgCdTe thin film samples with a CdTe passivation layer have been grown by molecular beam epitaxy, and photolithography has been used to etch a triangular pattern of holes into the passivation layer. The enhancement in ... -
Photon Activity from Partial Discharges in Liquid Dielectrics: Experimental test setup and measurements
(Master thesis, 2014)New subsea processing plants are planned to operate at large depths, down to 5000 meters. Power electronic converters are a crucial part of the plants hardware. In order for the converters to operate at such deep depths, ... -
Photon-ALP oscillations at CTA energies
(Peer reviewed; Journal article, 2023)Axions and axion-like-particles (ALPs) are well motivated beyond the standard model particles that can explain a variety of unsolved problems in physics, such as the strong CP problem and the nature of dark matter. These ... -
Photon-ALP oscillations at TeV energies
(Peer reviewed; Journal article, 2022)Axion and axion-like-paricles (ALPs) are well motivated cold dark matter candidates. Nevertheless, an astoundingly huge parameter space remains unexplored despite much effort, ranging from fuzzy dark matter at ma∼10−22 eV ... -
Photon-ALP oscillations with ELMAG
(Peer reviewed; Journal article, 2022)ELMAG is a Monte Carlo program made to simulate electromagnetic cascades initiated by high-energy photons interacting with the extragalactic background light. Photons propagating in an external magnetic field may oscillate ...