Browsing Institutt for fysikk by Title
Now showing items 1055-1074 of 2712
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Heterostructured GaAs/GaAsSb nanowires characterized by scanning precession electron microscopy
(Master thesis, 2020)III-V halvleder nanotråder kan være basisen for fremtidens optoelektroniske enheter. For å omptimalisere syntesen og egenskaper må strukturelle karakteristikker bestemmes. I denne oppgaven har krystall strukturen, orientering, ... -
Hidden correlation between absorption peaks in achiral carbon nanotubes and nanoribbons
(Journal article; Peer reviewed, 2018)In this paper we study the effect of absorption peak correlation in finite length carbonnanotubes and graphene nanoribbons. It is shown, in the orthogonalp-orbital tight-binding modelwith the nearest neighbor approximation, ... -
Hidden interplay of current-induced spin and orbital torques in bulk Fe3GeTe2
(Peer reviewed; Journal article, 2022)Low crystal symmetry of magnetic van der Waals materials naturally promotes spin-orbital complexity unachievable in common magnetic materials used for spin-orbit torque switching. Here, using first-principles methods, we ... -
High accuracy optical power measurements using silicon photodetectors as primary standards
(Master thesis, 2009) -
High capacity Mg batteries based on surface-controlled electrochemical reactions
(Journal article; Peer reviewed, 2018)Mg batteries are one of several new battery technologies expected to partially substitute lithium-based batteries in the future due to the lower cost and higher safety. However, the development of Mg batteries has been ... -
High concentration aqueous magnetic fluids: structure, colloidal stability, magnetic and flow properties
(Journal article; Peer reviewed, 2018)This paper is an in-depth analysis devoted to two basic types of water based magnetic fluids (MFs), containing magnetite nanoparticles with electrostatic and with electro-steric stabilization, both obtained by chemical ... -
High energy 2.1 micron short-pulsed fiber MOPA laser
(Master thesis, 2019)Denne master oppgaven er sammensatt av flere eksperimenter og numeriske modeller som sammen har ført til utviklingen av en ny kort-pulset, høy energi diode bassert Holmium "Master Oscillator Power Amplifier (MOPA)" laser ... -
High Energy Broadband Femtosecond Pulse Generation From Tm-doped Fiber MOPA
(Chapter, 2016)We report generation of high energy (up to 280 nJ), broadband (over 450 nm between 1.95 - 2.4 µm), 200 fs pulses at 2.1 W average power directly from a Tm-fiber MOPA laser. -
High energy radiation from Centaurus A
(Journal article; Peer reviewed, 2009)We calculate, for the nearest active galactic nucleus (AGN), Centaurus A (Cen A), the flux of high-energy cosmic rays (CR) and of accompanying secondary photons and neutrinos expected from hadronic interactions in the ... -
High level of circulating vitamin D during neoadjuvant therapy may lower risk of metastatic progression in high-risk rectal cancer
(Journal article; Peer reviewed, 2019)Background:Following curative-intent neoadjuvant therapy in locally advanced rectal cancer, metastaticprogression is still dominant. We investigated if patients’circulating 25-hydroxyvitamin D [25(OH)D] levels wereassociated ... -
High level of circulating vitamin D during neoadjuvant therapy may lower risk of metastatic progression in high-risk rectal cancer
(Journal article; Peer reviewed, 2019)Background: Following curative-intent neoadjuvant therapy in locally advanced rectal cancer, metastatic progression is still dominant. We investigated if patients’ circulating 25-hydroxyvitamin D [25(OH)D] levels were ... -
High peak power and energy scaling in the mid-IR chirped-pulse oscillator-amplifier laser systems
(Peer reviewed; Journal article, 2023)The paper introduces a new route towards the ultrafast high laser peak power and energy scaling in a hybrid mid-IR chirped pulse oscillator-amplifier (CPO-CPA) system, without sacrificing neither the pulse duration nor ... -
High Precision, Full Potential Electronic Transport Simulator: Implementation and First Results
(Master thesis, 2014)During the work with this master s thesis a number of important upgrades has been madeto the Full Band Monte Carlo program that is under development at FFI.The program is now able to simulate charge transport in Hg0.72Cd0.28Te, ... -
High resolution characterization of responsive hydrogels for biomedical application
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:72, Doctoral thesis, 2013)Hydrogels are 3D polymer network that, differing from conventional solids, can eliminate or absorb water and as a consequence undergo changes in volume, mechanical properties. Various properties of the hydrogels can be ... -
High resolution crystal orientation mapping of ultrathin films in SEM and TEM
(Peer reviewed; Journal article, 2022)Ultrathin metallic films are important functional materials for optical and microelectronic devices. Dedicated characterization with high spatial resolution and sufficient field of view is key to the understanding of the ... -
High resolution interferometry as a tool for characterization of swelling of weakly charged hydrogels subjected to amphiphile and cyclodextrin exposure
(Journal article; Peer reviewed, 2013)A high resolution interferometric technique was used to determine swelling behavior of weakly charged polyacrylamide hydrogels in the presence of oppositely charged surfactants and subsequent exposure to cyclodextrins. ... -
High Temperature Decomposition of Methane on Quartz Pellets
(Master thesis, 2015)This work has shown that pure methane, when exposed to quartz at a temperatures of 900°C and 1000°C, cracks and deposits carbon at a near constant rate. The deposition rates for the individual temperature levels were shown ... -
High-current-density electropolishing (HDEP) of AISI 316L (EN 1.4404) stainless steel
(Journal article; Peer reviewed, 2015)The paper presents new XPS results of surface layers formed after electrochemical polishing of AISI 316L stainless steel at high current density (HDEP) of 1000 A/dm2 (EP1000) versus a standard electropolishing (EP50) process ... -
High-energy astrophysical neutrinos from interactions in the Local Bubble
(Journal article; Peer reviewed, 2020)A signal of high-energy extraterrestrial neutrinos was discovered by the IceCube experiment [1]. Neutrinos are always produced together with gamma-rays, but the gamma-ray flux from extra- galactic sources cascade down to ... -
High-energy Mid-Infrared Cr:ZnS Chirped-pulse oscillator
(Chapter; Peer reviewed, 2013)Femtosecond coherent light sources emitting in the mid-infrared are of particular interest for a number of applications like environmental sensing, medicine, metrology, material processing and telecommunications. Among the ...