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Viser treff 2001-2020 av 2653
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Scanning tunneling microscopy based point-contact measurements of nanoscale magnetic systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:178, Doctoral thesis, 2010)In this thesis, the method of scanning tunneling microscopy (STM) based pointcontacts is presented together with measurements on nanonscale magnetic systems. The method allows point-contacts to be positioned with nm lateral ... -
Scanning X-ray ScatteringStudies of Mechanically Processed Polymers
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:324, Doctoral thesis, 2013)Employing raster-scanning small- and wide-angle X-ray scattering (SAXS and WAXS), morphological variations in weakly scattering polymers have been mapped. These techniques inherently yield information on multiple length ... -
(Scanning) Transmission Electron Microscopy Studies of Grain Boundary Segregation relevant to Intergranular Corrosion in Al-Mg-Si-Cu Alloys
(Doctoral thesis at NTNU;2015:23, Doctoral thesis, 2015)The effect of the alloy composition on the susceptibility to intergranular corrosion in Al-Mg-Si-Cu alloys has been investigated by Transmission Electron Microscopy. The main focus of this thesis has been the effect of ... -
Scattering amplitudes of massive Nambu-Goldstone bosons
(Journal article; Peer reviewed, 2018)Massive Nambu-Goldstone (mNG) bosons are quasiparticles the gap of which is determined exactly by symmetry. They appear whenever a symmetry is broken spontaneously in the ground state of a quantum many-body system and at ... -
Scattering of Electromagnetic Waves from Randomly Rough Surfaces with Skewed Height Distributions
(Master thesis, 2014)Research on the scattering of electromagnetic waves from rough surfaces has greatly advanced in the past decades through the access to rigorous numerical simulations. However, most of the research has focused on surfaces ... -
Scattering of light from weaklyrough surfaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:47, Doctoral thesis, 2013)A formalism is introduced for the non-perturbative, purely numerical, solution of the reduced Rayleigh equation for the scattering of light from two-dimensional penetrable rough surfaces. In the papers included in this ... -
Scattering theory of transport through disordered magnets
(Journal article; Peer reviewed, 2019)We present a scattering theory of transport through noncollinear disordered magnetic insulators. For concreteness, we study and compare the random field model (RFM) and the random anisotropy model (RAM). The RFM and RAM ... -
Schrödinger-Poisson and nonequilibrium Green's function methods applied to layered semiconductor devices
(Master thesis, 2018)In this work, electron transport through layered semiconductor heterostructure devices in the nanometer dimension are simulated. Because these devices have shrunk in the last decades, it is no longer sufficient to utilize ... -
Schwinger boson study of superconductivity mediated by antiferromagnetic spin fluctuations
(Peer reviewed; Journal article, 2020)We study superconductivity in a normal metal, arising from effective electron-electron interactions mediated by spin fluctuations in a neighboring antiferromagnetic insulator. Introducing a frustrating next-nearest neighbor ... -
Screening hypochromism (sieve effect) in red blood cells: a quantitative analysis
(Journal article; Peer reviewed, 2014)Multiwavelength UV-visible spectroscopy, Kramers-Kronig analysis, and several other experimental and theoretical tools have been applied over the last several decades to fathom absorption and scattering of light by suspensions ... -
Screening of a New Class of Fluorescent Probes for Diagnosis of Amyloid Deposits
(Master thesis, 2018)The purpose of this project has been to determine photo-physical properties of new and untested fluorescent probes. The probes have a 2,1,3-benzothiadiazole (BTD) ring structure and are derivatives of the previously explored ... -
Sea ice conditions in relation to offshore wind development in the Southern Baltic Sea
(Master thesis, 2023)Dette arbeidet presenterer en analyse av isforholdene i Østersjøen. Den viktigste parameteren for å beskrive de lokale isforholdene er flatistykkelsen. Fra denne størrelsen kan andre isparamtre estimeres. Havisens termiske ... -
Second order coherence of squeezed magnons in a thermal environment
(Master thesis, 2023)Spinbølger, eller magnoner, er interessante å studere på grunn av deres potensial som informasjonsbærende signaler i kondensert materie uten ohmisk tap, i motsetning til elektroner. Fenomenet kvantestramming er også et ... -
Seeing a Mycobacterium-Infected Cell in Nanoscale 3D: Correlative Imaging by Light Microscopy and FIB/SEM Tomography
(Journal article; Peer reviewed, 2015)Mycobacteria pose a threat to the world health today, with pathogenic and opportunistic bacteria causing tuberculosis and non-tuberculous disease in large parts of the population. Much is still unknown about the interplay ... -
Segmentation of the Cervical Spine based on 7T MRI
(Master thesis, 2023)Ultrahøyfelt-MR (UHF-MR), som 7T, har potensial til å forbedre bildekvaliteten i MR-undersøkelser gjennom økt oppløsning og forbedret signal-til-støy-forhold (SNR). Imidlertid introduserer UHF- MR også mer markante ... -
Selective area grown ZnTe nanowires as the basis for quasi-one-dimensional CdTe-HgTe multishell heterostructures
(Peer reviewed; Journal article, 2020)Selective area growth is employed in the vapor-liquid-solid molecular beam epitaxy of ZnTe nanowire arrays. Full control over the location of the individual nanowires is achieved by defined positioning of the growth catalyst. ... -
Selective area growth of AlGaN nanopyramid arrays on graphene by metal-organic vapor phase epitaxy
(Journal article; Peer reviewed, 2018)Wide-bandgap group III-nitride semiconductors are of special interest for applications in ultraviolet light emitting diodes, photodetectors, and lasers. However, epitaxial growth of high-quality III-nitride semiconductors ... -
Selective examination of optically and structurally separable parts within GaAs/AlGaAs core-shell nanowires by micro-photoluminescence and transmission electron microscopy
(Master thesis, 2013)GaAs/AlGaAs core-shell nanowires exhibit properties suitable for electronic and opto-electronic applications. In this work, individual parts of Au and self catalyzed nanowires are examined through microphotoluminescence ... -
Self-Assembly from Functionalized Clay Nanolayers: Nematics and Hybrid Structures
(Doctoral theses at NTNU;2021:321, Doctoral thesis, 2021)The focus of this Ph.D. thesis is to study functionalization and associated self-assembly of clay mineral in suspensions. Clay minerals are two-dimensional materials. They are among the most abundant, highly sustainable, ... -
Self-Assembly of Magnetic Nanoparticles into Superstructures for Magnonics
(Master thesis, 2015)Magnonics is a young and evolving field with the potential to replace conventional electronics. This field relies on the use of spin waves, or magnons, rather than electrons as the information carrier in logic devices, ...