Browsing Institutt for fysikk by Subject "VDP::Mathematics and natural science: 400::Physics: 430"
Now showing items 61-80 of 90
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Probing dark matter with astroparticles
(Doctoral theses at NTNU;2023:240, Doctoral thesis, 2023)There is an enormous amount of evidence for the existence of dark matter, from scales ranging from the faintest dwarf galaxies to the Universe as a whole. However, its nature remains a mystery. This thesis is a part of the ... -
Quantifying the influence of the stratosphere on the mesosphere and lower thermasphere
(Doctoral thesis at NTNU;2015:22, Doctoral thesis, 2015)In this thesis, the influence of the major modes of stratospheric variability - the seasonal cycle and sudden stratospheric warmings (SSWs) in the extratropics, and the quasi-biennial oscillation (QBO) in the equatorial ... -
Quantitative 3D Imaging and Metrology Using Coherent X-ray Scattering
(Doctoral theses at NTNU;2017:300, Doctoral thesis, 2017)This thesis has focused on exploring methods of using coherent X-ray scattering at synchrotron sources. New imaging techniques using coherent X-ray scattering have been investigated, and it has been discussed how limitations ... -
Quantitative atomic force microscopy and light microscopy of hydrogels and cells
(Doctoral theses at NTNU;2016:343, Doctoral thesis, 2016)Quantitative biology is an interdisciplinary subject that combines biology, mathematics and physics. Intimate collaboration on a global scale between these disciplines results in a wide variety of tools and innovation in ... -
RKKY interaction and coexistence with magnetism in superconducting systems
(Doctoral theses at NTNU;2022:53, Doctoral thesis, 2022)When cooled down, the electrical resistivity of certain materials suddenly drops to zero at some specific temperature. This phenomenon is called superconductivity. As we are living in a world steadily demanding more energy, ... -
(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 ... -
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, ... -
Semiconductor core fibers for terahertz applications
(Doctoral theses at NTNU;2021:156, Doctoral thesis, 2021)There are currently no usable waveguides or fibers for the THz frequency range, limiting opportunities for THz applications. This thesis describes a variety of considerations related to the characterization of silicon-core ... -
Silicon microwires as solar cells
(Doctoral thesis at NTNU;2015:235, Doctoral thesis, 2015)In this work it has been shown that microwire radial junction solar cells can be realized from silicon core glass fibers made via the molten core fiber drawing method starting with low quality silicon. Through a ... -
Spatiotemporal mapping of cascading processes in oligonucleotide-functionalized responsive hydrogels
(Doctoral theses at NTNU;2020:102, Doctoral thesis, 2020)Hydrogels – crosslinked polymer networks holding a large amount of water – have many properties that make them useful for medical applications, such as their resemblance to biological tissues, biocompatibility and ... -
Spin currents and torques via magnons, electrons, and Cooper pairs
(Doctoral theses at NTNU;2019:224, Doctoral thesis, 2019)Spin-based electronics—spintronics—is a candidate technology for complementing or replacing traditional semiconductor electronics at the end of Moore's law. We consider different spin carriers—electrons, magnons, and Cooper ... -
Spin pumping, spin transfer, and spin Hall effects in magnetic insulator-normal metal systems
(Doctoral theses at NTNU;2017:220, Doctoral thesis, 2017)This thesis presents four research papers on two topics within the field of spintronics. Three of the papers present theoretical models concerned with the topics of spin wave mode-dependent spin pumping, spin transfer, and ... -
Spin Transport in Antiferromagnets and Ferromagnets
(Doctoral theses at NTNU;2020:242, Doctoral thesis, 2020)This doctoral thesis presents and supplements the results of three scientific papers [1,2,3] within the field of theoretical condensed matter physics. The three papers investigate several spin-related phenomena in ... -
Spin-Orbit-Induced Electronic Phenomena in Superconductors and Antiferromagnets
(Doctoral theses at NTNU;2017:362, Doctoral thesis, 2017)In this thesis, we present three scientific papers that are all related to electronic phenomena induced by spin-orbit coupling. Papers 1 and 2 concern spin-orbit induced effects in superconductors and Paper 3 treats similar ... -
Stretching, breaking, and dissolution of polymeric nanofibres by computer experiments
(Doctoral theses at NTNU;2021:176, Doctoral thesis, 2021)Bundles of polymeric materials are ubiquitous and play essential roles in biological systems, and often display remarkable mechanical properties. With the never-ending experimental advances in control and manipulation of ... -
Studies of Ginzburg-Landau theories for two-component chiral superconductors
(Doctoral theses at NTNU;2021:290, Doctoral thesis, 2021)In this thesis we examine theoretical models called Ginzburg-Landau models describing the phenomena of unconventional superconductivity at temperatures close to the transition temperature of superconductivity. Superconductors ... -
A study of proximity-induced and magnon-mediated superconductivity on the surface of topological insulators
(Doctoral theses at NTNU;2021:40, Doctoral thesis, 2020)Summary: This thesis presents a study of superconducting phases in different effectively two-dimensional (2D) systems with spin-orbit coupling, with particular emphasis on systems consisting topological insulators (TIs) ... -
The role of oligosaccharide decorations in mucin interaction capacities : assessment by high resolution force probes
(Doctoral thesis at NTNU;2015:32, Doctoral thesis, 2015)Mucins are large proteins glycosylated with oligosaccharide groups. They are secreted from epithelial cells or embedded in the apical side of the epithelial cell and promote cell survival in different ways. Mucins also ... -
Theoretical and computational studies of the scattering of light from randomly rough dielectric surfaces
(Doctoral theses at NTNU;2019:45, Doctoral thesis, 2019)We are surrounded by light being scattered from surfaces all around us, both natural and man-made. Improving our understanding of exactly how light (and more generally, electromagnetic waves) interacts with and scatters ... -
Thermal processing of semiconductor alloy core glass fibers
(Doctoral theses at NTNU;2021:409, Doctoral thesis, 2021)Semiconductor core glass-clad fibers are of great interest as optical and optoelectronic platforms for their high transparency in infrared and the potential control of their electrical properties by doping or strain ...