Browsing Institutt for fysikk by Issue Date
Now showing items 761-780 of 2680
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Dissolution of copper mineral phases in biological fluids and the controlled release of copper ions from mineralized alginate hydrogels
(Journal article; Peer reviewed, 2015)Here we investigate the dissolution behaviour of copper minerals contained within biocompatible alginate hydrogels. Copper has a number of biological effects and has most recently been evaluated as an alternative to expensive ... -
Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass
(Journal article, 2015)We report the results of an experimental investigation and theoretical analysis of luminescence decay in Yb/Tm Y-codoped fibers based on nano-modified glass. Based on the experimental results, numerical simulations allowed ... -
Planetary waves in the MLT: Vertical coupling and effects
(Doctoral thesis, 2015)One of the major difficulties climate models face is the lack of data on the way in which the atmosphere couples energy, dynamics and composition vertically in the Earth’s climate system. This PhD thesis focuses on ... -
Monte Carlo Simulations of a simple Model for Charge Storage in a Single-file Nanopore
(Master thesis, 2015)This Master's thesis is focused upon charge storage in a nanopore of a capacitor. It introduces a simple model, where the only present interactions are electrostatic and steric effects, which allows only one ion to be at ... -
(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 ... -
Kerr nonlinear switching in a hybrid silica-silicon microspherical resonator
(Journal article; Peer reviewed, 2015)A hybrid silicon-core, silica-clad microspherical resonator has been fabricated from the semiconductor core fiber platform. Linear and nonlinear characterization of the resonator properties have shown it to exhibit ... -
Optical investigation of osteoarthritic human cartilage (ICRS grade) by confocal Raman spectroscopy: a pilot study
(Journal article; Peer reviewed, 2015)Biomolecular changes in the cartilage matrix during the early stage of osteoarthritis may be detected by Raman spectroscopy. The objective of this investigation was to determine vibrational spectral differences among ... -
A comparison of Gravity Wave Parameters derived from the Analysis of a Three-Field Photometer with Imagers
(Master thesis, 2015)A method for preprocessing and analysing a few select fields in airglow intensity images from an all-sky imager was developed and utilized. Waves detected with a three-field analysis were compared with those waves ... -
Walker Breakdown in Magnon-Induced Ferromagnetic Domain Wall Motion
(Master thesis, 2015)We derive for the first time the collective coordinate equations for magnon-driven domain wall motion in ferromagnets from the Landau-Lifshitz-Gilbert equation. By performing a consistent calculation to second order we are ... -
Model studies of the chiral and deconfinement transitions in QCD
(Doctoral thesis at NTNU;2015:238, Doctoral thesis, 2015)The force that is responsible for holding the nucleus together and for creating protons and neutrons (via the binding of even smaller particles,called quarks) is the strong nuclear force. Of the four fundamental forces of ... -
Validating the algorithms AAA and Acuros for calculation of dose from flattening filter free beams in heterogenous tissue - Application to stereotactic radiotherapy of lung tumors
(Master thesis, 2015)In radiation therapy of cancer, modeling the dose to the patient is very important. Several computational algorithms are available, where some model dose in heterogeneous tissue better than others. After implementation of ... -
Octave-spanning Supercontinuum From As2S3-silica Double-nanospike Waveguide Pumped by Femtosecond Cr:ZnS Laser at 2.35 μm
(Chapter, 2015)We generate a 1.2 to 3.6 μm supercontinuum using a As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser. Varying the core diameter allows the group velocity dispersion to be fine-tuned, thus maximizing ... -
Coupling in the middle atmosphere related to the 2013 major sudden stratospheric warming
(Journal article; Peer reviewed, 2015)The previously reported observation of anomalous eastward gravity wave forcing at mesopause heights around the onset of the January 2013 major sudden stratospheric warming (SSW) over Trondheim, Norway (63° N, 10° E), is ... -
Strong odd-frequency pairing correlations in fully gapped Zeeman-split superconductors
(Journal article; Peer reviewed, 2015)It is now well established that at a superconductor/ferromagnet (S/F) interface an unconventional superconducting state arises in which the pairing is odd-frequency. The hallmark signature of this superconducting state is ... -
Using Background OH Airglow from astronomical Observations for atmospheric Research: A Proof of Concept
(Master thesis, 2015)The physics of the hydroxyl (OH) layer located in the Mesosphere and Lower Thermosphere (MLT) has become a focus of interest, as more and more climate models extend into this region. This is shown by the IPCC's last two ... -
Molecular beam and pulsed laser deposition of ZnS:Cr for intermediate band solar cells
(Journal article, 2015)We have investigated the structural and optical properties of Cr-doped ZnS (ZnS:Cr) thin films (0–7.5 at.% Cr) for use in intermediate band solar cells. The films were grown on Si(100) in molecular beam epitaxy (MBE) and ... -
Automatic imaging of Tissue Microarrays using non-linear Microscopy
(Master thesis, 2015)St. Olavs hospital has supplied a dataset of 2703 tissue samples from the tumor periphery from approximately 900 patients organized on tissue microarrays (TMA). In this project we wish to examine all these tissue samples ... -
The Design of Simple Bacterial Microarrays: Development towards Immobilizing Single Living Bacteria on Predefined Micro-Sized Spots on Patterned Surfaces
(Journal article; Peer reviewed, 2015)In this paper we demonstrate a procedure for preparing bacterial arrays that is fast, easy, and applicable in a standard molecular biology laboratory. Microcontact printing is used to deposit chemicals promoting bacterial ... -
Magnetic Resonance Imaging: Multidimensional non-Gaussian Diffusion-weighted MRI - Image quality analysis
(Master thesis, 2015)To investigate the viability of two different nuclear magnetic resonance imaging systems for acquisition of highly diffusion weighted, multidimensional human brain data, images were acquired on both, using two different ... -
A Bivariate Analysis of the Homogeneous Plane-Wave Assumption in Magnetotelluric Theory
(Master thesis, 2015)The magnetotelluric method is an electromagnetic induction method used to image subsurface resistivity. It utilizes Earths' natural time-varying electromagnetic field as a source. The fields propagating into the subsurface ...