Browsing Doctoral Theses / Doktorsavhandlingar Institutionen för fysik by Title
Now showing items 21-40 of 70
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Excited States in Negative Ions
(2014-05-07)This thesis covers experimental studies of atomic negative ions with the main goal of increasing our fundamental understanding of these fragile quantum systems. Comparisons of measurements and calculations have been used ... -
Fluctuating superconductivity and pair-density wave order in the cuprate superconductors
(2020-05-19)High-temperature superconductors are some of nature’s most enigmatic materials. Besides carrying a supercurrent, these materials manifest a range of electronic and structural orders. A state of modulated superconductivity, ... -
Formation and Decay of Multiply-Charged Molecules upon Single-Photon Excitation
(2024-03-25)This thesis presents the investigation of dissociative multi-ionisation processes in gas-phase molecules through single photon absorption, employing a combination of ion spectrometry and electron spectroscopy, relying on ... -
Frequency comb Brillouin microscopy
(2021-10-26)Brillouin light scattering (BLS), an almost a century-old technique, has evolved into a powerful and versatile method to study acoustic and magnetic phenomena down to the nanometer size scale. Presently, BLS can be applied ... -
Genetic variation in natural populations: a modeller's perspective
(2014-10-29)Thanks to advances in genome sequencing, empirical patterns of within- and between-species genetic variation are readily available. By studying these patterns much has been learned about the evolutionary histories of ... -
Glycolytic oscillations in individual yeast cells
(2015-01-07)Oscillations in the concentration of yeast glycolytic intermediates have been intensively studied since the 1950s, but these studies have so far been limited to observations of average oscillatory behavior in synchronized ... -
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 ... -
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 ... -
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 ... -
Ionization of large molecules with short laser pulses
(2010-03-24)The decay dynamics of fullerenes and polyaromatic hydrocarbons (PAH) after femtosecond-laser excitation have been studied experimentally by electron momentum mapping and mass spectrometry. The electron spectra of fullerenes ... -
Laser Photodetachment of Negative Ions - Fundamental Research and Applications
(2009-05-07)Photodetachment studies of atomic and molecular negative ions in the gas phase are presented. Negative ions are loosely bound quantum systems whose existence is strongly dependent on the correlations between the electrons. ... -
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 ... -
Magnetodynamics of pseudo spin valves investigated using co-planar waveguide and spin torque ferromagnetic resonance techniques
(2017-05-17)Nanocontact spin-torque nano-oscillators (NC-STNOs), based on magnetic multilayers, can generate a wide range of highly nonlinear localized and propagating spin wave modes for use in magnonics. In this thesis, we study ... -
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 ... -
Metabolic communication between individual yeast cells
(2019-11-01)With the recent progress in sensitive cell manipulation and microfabrication techniques, glycolytic oscillations in yeast have been observed at a single-cell level. It was shown that individually, oscillating cells could ... -
Microfluidic devices for single-cell and organ-level studies
(2017-03-01)The process of developing and testing drug candidates is a slow and costly endeavor. The mainstream technologies such as bulk 2D cell culture techniques have been proven insufficient to capture the pharmacokinetics and ... -
Mixing and Evaporation at the Cloud Edge and Angular Dynamics of Small Crystals in Viscous Flow
(2022-01-19)How liquid water in atmospheric clouds distributes over droplets of different sizes is important for the initiation of rainfall, and for the optical properties of the atmosphere. Droplet-number densities and droplet-size ... -
Modeling of radiative processes in organic scintillators
(2014-02-21)This thesis presents the development of a Monte Carlo calibration of a whole body counter (WBC), consisting of four large plastic (organic) scintillators, used for determine the body burden of gamma-emitting radionuclides. ... -
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 ... -
Multi-Electron and Multi-Ion Coincidence Spectroscopy of Single-Photon Ionization Processes in Molecules
(2019-05-15)This thesis presents experimental investigations of multi-electron and multi-electron-multi-ion coincidence measurements of samples in the gas phase utilizing a versatile time-of-flight magnetic bottle spectrometer technique. ...