Browsing Institutt for fysikk by Document Types "Doctoral thesis"
Now showing items 61-80 of 239
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Elucidating the pathogenesis of osteochondrosis using nonlinear optical microscopy
(Doctoral theses at NTNU;2017:309, Doctoral thesis, 2017)Abstract Osteochondrosis is defined as a focal disturbance in endochondral ossification and causes joint pain and lameness in several species of animals, including humans. The focal disturbance occurs at predilection ... -
Energy spectra and scaling relations in numerical turbulence with laboratory and astrophysical applications
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:163, Doctoral thesis, 2004)In this work we have focused on the statistical properties of turbulence. This has been done in two different settings; one with neutral gas (the first four papers) and the other with ionized gas (the last four papers). ... -
Exchange-only, nuclear spin-free qubits in semiconductor quantum dots
(Doctoral theses at NTNU;2020:255, Doctoral thesis, 2020)There are many successful proposals for using electron spins in quantum dots as qubits. However, a semiconductor quantum dot-based qubit that is scalable, reliable and robust enough for actual quantum information applications ... -
Experimental Studies of Self-organization from Electrically Polarized Clay Particles
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:279, Doctoral thesis, 2011) -
Experimental Studies of Smectite Clays: Colloids and Nanoporous Materials
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:215, Doctoral thesis, 2012)This thesis presents experimental work on two synthetic clay minerals: fluorohectorite and Laponite RD. Both are hectorite clays belonging to the widely studied smectite group of clays. The results presented can broadly ... -
Exploiting infrasound to probe the dynamics of the middle atmosphere
(Doctoral theses at NTNU;2023:214, Doctoral thesis, 2023)This doctoral thesis examines the middle atmosphere (30 - 80 km altitude) using ground-based observations of low-frequency sound waves (infrasound). By exploiting infrasound waves, the thesis aims to increase observations ... -
Ferroelastic LaCoO₃-based polycrystalline ceramics : a transmission electron microscopy and X-ray diffraction study
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:143, Doctoral thesis, 2005)In the present work rhombohedrally distorted LaCoO3-based materials have been studied using transmission electron microscopy, in situ synchrotron X-ray diffraction during uniaxial compression/decompression, and ex situ ... -
Fine material processing using ultra-short pulsed 2 μm all-fiber lasers
(Doctoral theses at NTNU;2022:327, Doctoral thesis, 2022)Precision processing of silicon (Si) and other semiconductors is becoming increasingly important following the rising demand for semiconductor-based devices. Laser-assisted material processing on and below the surface can ... -
Geometric Aspects of Quantum Entanglement
(Doctoral thesis at NTNU;2016:253, Doctoral thesis, 2016)Summary: Entanglement is a strange feature contained in the quantum mechanical framework, first observed theoretically by Erwin Schrödinger and Albert Einstein. An inherent attribute of entanglement is non-locality, and ... -
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) -
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-energy X-ray Transmission Microscopy based on Compound Refractive Lenses
(Doctoral theses at NTNU;2017:124, Doctoral thesis, 2017)Summary of thesis: In the results of the work presented in this thesis it has been shown theoretically and demonstrated experimentally that lateral chromatic aberration in hard x-ray transmission microscopy can be ... -
Hybrid devices for protected quantum information processing
(Doctoral theses at NTNU;2023:260, Doctoral thesis, 2023)Quantum information is very fragile, and it is clear that we need to develop better qubits and employ error correction, in order to make use of the full potential that quantum computation has. In this thesis we explore ... -
In situ hard X-ray ptychographic imaging for materials science
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:244, Doctoral thesis, 2014)With the ability to control the structure of multiphase materials for applications on the nano- and mesoscale, methods for imaging these materials are becoming increasingly important. Especially techniques able to image ... -
InAs/(Al)GaAs quantum dots for intermediate band solar cells
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:242, Doctoral thesis, 2012)Intermediate band solar cells (IBSCs) have a theoretical conversion efficiency limit of 63.2%, compared to 40.7% for a single junction solar cell. The enhanced efficiency limit is due to an intermediate energy level ... -
Influence of oligoguluronates on alginate gelation and on alginate gel properties
(Doctoral thesis at NTNU;2016:59, Doctoral thesis, 2016)Alginates are very abundant material in nature, mostly known for its gelling ability. Alginate is a family of linear copolymers of β-D-mannuronic acid and α-L-guluronic acid. Due to its biocompatibility, nontoxicity and ... -
Interactions of Functional Groups with Surfaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:128, Doctoral thesis, 2009)The adsorption of atoms and molecules is a key step in a wide range of technologically important areas including catalysis, adhesion, corrosion, electrochemistry and microelectronics. Investigations of well-defined systems ... -
Interactions of High Aspect Ratio Nanostructures and Biological Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:245, Doctoral thesis, 2010)As the length scale of basic biological processes coincides more and more with the length scale at which artificial nanostructures can be constructed, the interplay between those structures and biological systems becomes ... -
Intercalation Phenomena of Carbon Dioxide, Water or Ions in Smectite Clay
(Doctoral thesis at NTNU;2015:319, Doctoral thesis, 2015)Smectites, or swelling clays, are layered porous materials based on two-dimensional stacks of inorganic layers. The non-equivalent substitutions of atoms generate a negative charge on each layer surface which is balanced ...