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Gold Nanostructures on Graphite
(Master thesis, 2013)Gold nanoparticles supported on a graphite substrate are prepared by thermal evaporation, and subsequently studied by X-ray photoelectron spectroscopy (XPS), temperature programmed desorption (TPD) of carbon monoxide and ... -
Goldstone bosons at finite density - Study of spontaneous symmetry breaking in O(N)-symmetric theories at finite chemical potential
(Master thesis, 2017)Goldstone s theorem states that, in presence of Lorentz invariance, the number of massless modes that appear after spontaneous symmetry breaking coincides with the number of broken generators. These modes are called Goldstone ... -
GPU-Accelerated Visualization of Scattered Point Data
(Journal article; Peer reviewed, 2013)As data sets continue to grow in size, visualization has become a vitally important tool for extracting meaningful knowledge. Scattered point data, which are unordered sets of point coordinates with associated measured ... -
Grain boundary structures and their correlation with intergranular corrosion in an extruded Al-Mg-Si-Cu alloy
(Peer reviewed; Journal article, 2020)A detailed analysis of grain boundaries in a highly textured Al-Mg-Si-Cu alloy is presented in this work. Electron backscatter diffraction demonstrates the presence of three main categories of grain boundaries in addition ... -
Graphene mode-locked Cr: ZnS chirped-pulse oscillator
(Journal article; Peer reviewed, 2014)We report the first to our knowledge high-energy graphene mode-locked solid-state laser operating in the positive dispersion regime. Pulses with 15.5 nJ energy and 42 nm spectral bandwidth with 0.87 ps duration were obtained ... -
Graphene Mode-locked Cr:ZnS Laser with 41 fs Pulse Duration
(Journal article; Peer reviewed, 2014)We report the ultrashort-pulse Cr:ZnS laser mode-locked by graphene-based saturable absorber mirror. Using the combination of bulk material and a chirped mirror, we demonstrate the shortest reported so far mid-IR pulses ... -
Graphene mode-locked Cr:ZnS laser with 44 fs pulse duration
(Chapter, 2013)The first Cr:ZnS laser mode-locked by graphene-based saturable absorber mirror generates the shortest reported so far mid-IR pulses of only 5.5 optical cycles (44 fs) at 2.35 μm with 139 nm spectral bandwidth. -
Graphene Saturable Absorber Mirrors for 2-3 μm Lasers
(Master thesis, 2018)This thesis is devoted to the development of graphene saturable absorber mirrors for ultrafast applications in the mid-infrared. It covers from the fabrication of the graphene saturable absorber mirrors via graphene transfer ... -
Graphene-based extremely wide-angle tunable metamaterial absorber
(Journal article; Peer reviewed, 2016)We investigate the absorption properties of graphene-based anisotropic metamaterial structures where the metamaterial layer possesses an electromagnetic response corresponding to a near-zero permittivity. We find that ... -
Graphene-Based Transparent Conducting Substrates for GaN/AlGaN Nanocolumn Flip-Chip Ultraviolet Light-Emitting Diodes
(Journal article; Peer reviewed, 2021)Flip-chip ultraviolet light-emitting diodes based on self-assembled GaN/AlGaN nanocolumns have been fabricated, exploiting single-layer graphene not only as a growth substrate but also as a transparent conducting electrode. ... -
Graphene-mode-locked Holmium Fiber Laser Operating Beyond 2.1 µm
(Chapter, 2015) -
Gravitational waves
(Master thesis, 2022)I denne oppgaven vil vi først se den svake feltgrensen til Einsteins feltligninger og den grunnleggende formalismen for gravitasjonelle bølger i den lineariserte teorien. Videre vil vi ta et skritt utenfor den lineariserte ... -
Gravity Wave Climatology for Trondheim using a Meteor Radar.
(Master thesis, 2013)In this thesis, a gravity wave climatology for the altitude range of the airglow (hydroxyl) layer of 83 to 91km have been made using data from a meteor radar located at Dragvoll (64,4$^{o}$N, 10,5$^{o}$E) in Trondheim. The ... -
Gravity Wave Refraction in the Atmosphere:: Ray tracing versus Geometric Location from a Single Image
(Master thesis, 2013)This thesis presents two methods of finding the sources of gravity waves observed in the night-time hydroxyl airglow; ray-tracing and geometric localisation by fitting concentric circles onto the curvature of the gravity ... -
Green’s Function Approach to Quantum Phenomena in Heterostructures with Spin- Polarization and Coherence
(Doctoral theses at NTNU;2023:238, Doctoral thesis, 2023)Kvantemekanikken som muliggjør fremtidens informasjonsteknologi Moderne datamaskiner produserer en mengde varme som er sammenlignbart med varmen fra panelovner. Denne varmeproduksjonen, sammen med utfordringer relatert ... -
Ground-Based UV Measurements, Aerosol Effects on UV Radiation
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:39, Doctoral thesis, 2009) -
Growth and Characterization of Germanium Quantum Dots and Crystalline Silicon
(Master thesis, 2011)Germanium quantum dots in a silicon matrix can be used in so-called intermediate band solar cells. Such solar cells have efficiency limits exceeding that of the conventional single junction solar cells. In this master ... -
Growth and characterization of ZnO thin films to be utilized inorganic/inorganic solar cells
(Master thesis, 2009) -
Growth study of self-assembled GaN nanocolumns on silica glass by plasma assisted molecular beam epitaxy
(Journal article; Peer reviewed, 2017)We demonstrate GaN nanocolumn growth on fused silica glass by plasma-assisted molecular beam epitaxy. The effect of the substrate temperature, Ga flux and N2 flow rate on the structural and optical properties are studied. ...