Browsing Institutt for fysikk by Title
Now showing items 107-126 of 2711
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Aeronomy of hydroxyl airglow variability by means of high-resolution telescope observations and gravity wave simulations
(Doctoral theses at NTNU;2019:202, Doctoral thesis, 2019)Are there waves on the fjord right now? “Easy to find out”, you might think. Just go down to the water and have a look. Now imagine that you are in Oppdal, about 90 kilometres away, trying to see the waves on the fjord in ... -
Affect of Time Dependent Magnetization on SFS junctions: SFS, Josephson Current, Superconductor, Ferromagnetic, Time dependent field
(Master thesis, 2013)SFS junctions shows interesting properties, since these properties strongly related to geometry of device and current carriers status, one can control these properties with changing external conditions, such as changing ... -
After-gate attack on a quantum cryptosystem
(Journal article; Peer reviewed, 2011)We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside ... -
Aging and Failure of a Polymer Chain under Tension
(Peer reviewed; Journal article, 2021)The rupture of a polymer chain maintained at temperature T under fixed tension is prototypical to a wide array of systems failing under constant external stress and random perturbations. Past research focused on analytic ... -
Airglow Derived Measurements of Q-Branch Transition Probabilities for Several Hydroxyl Meinel Bands
(Journal article; Peer reviewed, 2019)Spectroscopic measurements of the hydroxyl (OH) airglow emissions are often used to infer neutral temperatures near the mesopause. Correct Einstein coefficients for the various transitions in the OH airglow are needed to ... -
Akselerasjonen går vel inn mot sentrum, ikke sant?
(Master thesis, 2020)Sammendrag For å kunne gå opp til eksamen eller annen avsluttende vurdering i emner innen høyere utdanning må studentene ofte gjennomføre og få godkjent en viss andel obligatoriske arbeidskrav i løpet av et semester. ... -
Alexithymia and professional quality of life in radiation oncology: The moderator effect of the professional profile
(Peer reviewed; Journal article, 2021)Background and purpose Cancer care can be taxing. Alexithymia, a personality construct characterized by difficulties in identifying and describing feeling and emotions, an externally-oriented thinking style and scarcity ... -
Alginate Microsphere Encapsulation of Drug-Loaded Nanoparticles: A Novel Strategy for Intraperitoneal Drug Delivery
(Peer reviewed; Journal article, 2022)Alginate hydrogels have been broadly investigated for use in medical applications due to their biocompatibility and the possibility to encapsulate cells, proteins, and drugs. In the treatment of peritoneal metastasis, rapid ... -
Alkaline oxide interface modifiers for silicon fiber production
(Journal article; Peer reviewed, 2013)We demonstrate the ability to pull small diameter silicon-core fibers with low oxygen content by using interface modifiers between the silica cladding and the semiconductor. Alkali earths scavenge oxygen and form a ... -
All-Fiber Optical Supercontinuum Source at 1.7-2.9 μm
(Chapter, 2013)We report supercontinuum generation in the range of 1.7-2.9 μm at up to 3.08 W of output power from a Tm-doped pulsed fiber laser emitting between 1.9-2.5 μm, spliced with a nonlinear fluoride or germanate fiber. -
All-fiber optical supercontinuum sources in 1.7-3.2 μm range
(Journal article; Peer reviewed, 2014)We report supercontinuum generation in the 1.7-2.9 μm range with up to 3.08 W of output power and in the range of 1.93-3.18 μm with up to 3.8 W of output power from all-fiber MOPA pulsed systems with Tm-doped fiber mode-locked ... -
All-fibre heterogeneously-integrated frequency comb generation using silicon core fibre
(Peer reviewed; Journal article, 2022)Originally developed for metrology, optical frequency combs are becoming increasingly pervasive in a wider range of research topics including optical communications, spectroscopy, and radio or microwave signal processing. ... -
All-laser-microprocessed waveguide Cr:ZnS laser
(Peer reviewed; Journal article, 2022)We report the proof-of-concept of an operational laser active medium with a depressed cladding waveguide manufactured in the volume of a Cr2+:ZnS single-crystalline sample and antireflection microstructures fabricated on ... -
All-optical high-speed modulation of THz transmission through silicon core optical fibers
(Journal article; Peer reviewed, 2021)High speed optical modulation of THz radiation is of interest for information processing and communications applications. In this paper infrared femtosecond pulses are used to generate free carriers that reduce the THz ... -
All-optical Magnetisation Switching in Two-dimensional Metallic Ferro- and Antiferromagnetic Systems
(Master thesis, 2018)Motivated by recent experimental and theoretical work on ultrafast optical switching of magnetic order in ferromagnetic and antiferromagnetic materials, we study the influence of polarised light on the spin polarisation ... -
Alloy structure of rare earth Ce with Pt base metal, and the adsorption of CO
(Peer reviewed; Journal article, 2019)The alloy structure of Ce and Pt inter-metallics is investigated with density functional theory. A systematic analysis of different alloy structures and surface terminations, as well as adsorption of CO in different sites ... -
Alpha-Synuclein Strain Variability in Body-First and Brain-First Synucleinopathies
(Peer reviewed; Journal article, 2022)Pathogenic alpha-synuclein (asyn) aggregates are a defining feature of neurodegenerative synucleinopathies, which include Parkinson's disease, Lewy body dementia, pure autonomic failure and multiple system atrophy. Early ... -
Alternative coalescence model for deuteron, tritium, helium-3 and their antinuclei
(Peer reviewed; Journal article, 2020)Antideuteron and antihelium nuclei have been proposed as a detection channel for dark matter annihilations and decays in the Milky Way, due to the low astrophysical background expected. To estimate both the signal for ... -
Amphinex-(TPCS2a)-based photodynamic therapy and photochemical internalization of bleomycin and temozolomide: - in vitro studies on the glioma cell line F98
(Master thesis, 2013)Presented in this master's thesis are studies on the response of glioma cells from rat (F98) to in vitro photodynamic therapy (PDT) and photochemical internalization (PCI), utilizing as photosensitizer the amphiphilic ... -
Amphiphilic Protoporphyrin IX Derivatives as New Photosensitizing Agents for the Improvement of Photodynamic Therapy
(Peer reviewed; Journal article, 2022)Photodynamic therapy (PDT) is a non-invasive therapeutic modality based on the interaction between a photosensitive molecule called photosensitizer (PS) and visible light irradiation in the presence of oxygen molecule. ...