Opin vísindi

# Browsing Doktorsritgerðir- HÍ by Department "Raunvísindadeild (HÍ)"

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• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-09-02)
An active field of research in magnetism today involves studies of solitons -- localised magnetic textures possessing particle-like properties. They are considered promising for various applications but are also intriguing from a fundamental point of ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-06)
Electron paramagnetic resonance (EPR) spectroscopy is routinely used to study the structure and dynamics of nucleic acids, to obtain information about their functions. A prerequisite for most EPR studies of nucleic acids is the incorporation of ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-10)
The physics of light-matter interactions is a rapidly developing interdisciplinary research area, combining methods and phenomena both from condensed matter physics and quantum optics. One of the most common realizations of strong coupling regime implies ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-01)
Lake Victoria is of immense ecological and socio-economic significance for the riparian communities. However, the lake is faced with human induced pressures such as overfishing, introduction of alien species, increased eutrophication and climate change ...
• (Aalto University, Helsinki;University of Iceland, Reykjavik, 2016)
A polymer escaping from a confining external potential represents a generic description of long macromolecules crossing an energy barrier. This type of barrier crossing problems are typical in nano- and microscale polymeric systems, where the polymers ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-07)
In the early Universe, most of the cold neutral gas that will later form into individual stars and galaxies is practically invisible to us. These neutral gas reservoirs can, however, be illuminated by bright cosmic lightsources such as gamma-ray bursts ...
• (Jens Guðmundur Hjörleifsson, 2018-06-06)
Protein quaternary structures are fundament for life. Proteins have evolved towards large assemblies of subunits needed for the execution of complex chemistry, for building structural components or for compartmentalization. Most oligomeric enzymes ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-10-27)
Focused electron beam induced deposition (FEBID) is a nanofabrication technique wherein electron-induced reactions are used to deposit pure metals from organometallic precursors under the area of a primary electron beam. It can be used to directly ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-12-15)
Focused electron beam induced deposition (FEBID) is a direct-write 3D nanofabrication technique, which works on the principle of electron-induced molecular decomposition. In FEBID, a high-energy focused electron beam dissociates the precursor molecules ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2018-10)
The polarization of electromagnetic waves (the direction of transversal vibration of its electric field vector) provides essential information about the emitting sources and scattering objects. Its measurement, i.e., optical polarimetry, has a history ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2018-12)
The research focused on multiphoton dynamics and fragment formation for HBr, DCl, and bromomethanes, using mass resolved multiphoton ionization (MR-MPI) and velocity map imaging (VMI) techniques. Data interpretations were based on analysis of (2+n)REMPI ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences., 2017-03-13)
Commercial design of a sustainable route for on-site production of ammo- nia represents a potential economic and environmental breakthrough. In an analogous process to the naturally occurring enzymatic mechanism, synthe- sis of ammonia could be achieved ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2018)
Light matter coupling is a eld that has rapidly grown in the past decades to become one of the most important interdisciplinary research subject. It combines the phenomena of condensed matter and quantum optics and brings a new panel of unique e ects. ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-03-29)
The first main theme of this thesis is the approximation of holomorphic functions on Stein manifolds by polynomials. In our setting a polynomial is an entire function whose absolute value is bounded from above by $\exp(a\psi+b)$ on the complement of a ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-12-21)
Electron paramagnetic resonance (EPR) spectroscopy is a well known technique that is routinely used to investigate the structure and dynamics of nucleic acids. EPR requires incorporation of paramagnetic centers at specific sites, called site-directed ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-12)
Nanomagnetic systems and transitions between magnetic states are currently an active topic of research. Spintronics is, in particular, a new branch of science and technology where spin degrees of freedom and spin currents are used in an analogous way ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-08)
The purpose of this thesis is to develop spatio-temporal statistical models for glaciology, using the Bayesian hierarchical framework. Specifically, the process level is modeled as a time series of computer simulator outputs (i.e., from a numerical ...
• (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-11)
Microscopic magnetic particles can be found in a wide range of systems, from asteroids in outer space and minerals in the Earth’s crust to living organisms on land and in the ocean. Often they determine critical functional properties of these systems ...