Doctoral Theses / Doktorsavhandlingar Institutionen för fysik: Recent submissions
Visas titlar 41-60 av 66
-
Magnetic Thin Films with Graded and Tilted Anisotropy for Spintronic Devices
(2013-05-10)In this thesis magnetic thin films with graded or tilted anisotropy are intensively studied for potential applications in spintronic devices. A continuum of stable remanent resistance states is realized in Co/Pd multilayers ... -
Correlations in low-dimensional quantum many-particle systems
(2013-05-08)This thesis concerns correlation effects in quantum many-particle systems in one and two dimensions. Such systems show many exotic non-Fermi liquid phenomena, which can be treated analytically using non-perturbative ... -
Electromechanical Phenomena in Superconducting and Normal Nanostructures
(2013-05-08)This thesis summarizes a series of theoretical studies on the electromechanical properties of nanostructures made of superconducting and/or metallic elements. The first part of the work is devoted to the analysis of the ... -
On the Control of Nematic Liquid Crystal Alignment
(2013-05-07)Liquid crystal displays (LCDs) are incorporated in a great variety of electronic devices such as laptops, mobile phones, TV sets, etc. The performance of LCDs depends strongly on the alignment of liquid crystal and therefore ... -
Advances in Holographic Optical Trapping
(2013-05-05)Holographic optical trapping (HOT) is a technique for non-invasive dynamic anipulation of multiple microscopic objects, which has been used for many applications in the life sciences during the past decade. The technique ... -
Embedded Measurement Systems
(2013-04-30)The subject of Embedded Measurement Systems (EMS) is the merging of embedded systems and electrical measurement systems. This indicates that EMSs are hardware-software systems dedicated to measuring one or a few physical ... -
Correlated Materials - Models & Methods
(2013-03-12)This thesis encompass a series of studies on methods and models for electron systems with local interactions, relevant for correlated materials. The first study focus on the canonical model for local correlation, the Hubbard ... -
Modelling late toxicity in hypofractionated radiation therapy
(2013-02-22)In hypofractionated radiation therapy (RT), the treatment is delivered by few fractions with high doses per fraction. This is in contrast to conventionally fractionated RT where the total dose is delivered in many fractions ... -
Non-linear Optical Microscopy and Spectroscopy for Biomedical Studies
(2012-11-21)This thesis is based on the application of non-linear optical microscopy and spectroscopy techniques within biomedical research. Non-linear optical microscopy gives the possibility of exciting fluorophores using near ... -
Interaction and disorder in helical conductors
(2012-09-28)Different effects from electron-electron interactions and disorder in helical and quasi-helical conductors are studied using bosonisation and renormalisation group methods. The combined effects of Rashba spin-orbit ... -
Self Oscillations and Cooling of Carbon Based NEMS Devices
(2012-04-10)We investigate the electromechanical properties of a number of system geometries featuring a doubly clamped Carbon Nanotube or Graphene sheet with a deflection sensitive resistance and an electronic feedback in the form ... -
Thermal properties of clusters and molecules - Experiments on evaporation, thermionic emission, and radiative cooling
(2012-02-03)This thesis presents experiments performed on clusters and molecules, where the three channels of unimolecular decay have been studied. Evaporation from protonated and negatively charged water cluster have yielded size ... -
Nanoelectromechanical systems from carbon nanotubes and graphene
(2012-01-02)Carbon nanotubes and graphene have many interesting properties. To exploit the properties in applications their synthesis and incorporation in devices has to be understood and controlled. This thesis is based on experimental ... -
Two-Electron Excitations in Negative Ions
(2011-10-07)The main goal of this work has been to increase the knowledge of electron-electron correlation through experimental studies of negative ions. Negative ions are atoms or molecules to which an extra electron has been attached. ... -
Electronic Control of Flexural Nanowire Vibrations
(2011-05-19)“Nanoelectromechanical systems” (NEMS) are nanometer-sized mechanical structures coupled to electronic devices of comparable size. The coupling between mechanical and electronic degrees of freedom, combined with their ... -
Inertial collisions in random flows
(2011-05-13)In nature, suspensions of small particles in fluids are common. An important example are rain droplets suspended in turbulent clouds. Such clouds can start to rain very quickly and the reason for this is still not fully ... -
Mesoscopic phenomena in the electromechanics of suspended nanowires
(2011-03-25)Over the last two decades nanotechnology has been a very active field of scientific research, both from fundamental perspectives as well as for applications in technology and consumer goods. In this thesis, theoretical ... -
In Silico Studies of Carbon Nanotubes and Metal Clusters
(2010)Carbon nanotubes have been envisioned to become a very important material in various applications. This is due to the unique properties of carbon nanotubes which can be exploited in applications on length scales spanning ... -
Carbon Nanotube Transistors: Nanotube Growth, Contact Properties and Novel Devices
(2010-04-13)Carbon nanotubes (CNTs) are envisioned to be used as the basic building blocks in future electronics due to their excellent electronic properties such as high mobility, compatibility with high-k dielectrics and small ... -
Towards a relativistically covariant many-body perturbation theory - With numerical implementation to helium-like ions
(2010-03-30)The experimental results for simple atomic systems have become more and more accurate and in order to keep up with the experimental achievements the theoretical procedures have to be refined. Recent accurate experimental ...