Now showing items 18-37 of 82

    • Electromechanical Phenomena in Superconducting and Normal Nanostructures 

      Pena Aza, Milton Eduardo (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 ...
    • Electronic Control of Flexural Nanowire Vibrations 

      Santandrea, Fabio (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 ...
    • Embedded Measurement Systems 

      Bengtsson, Lars (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 ...
    • Equilibrium statistics of channel-confined DNA 

      Werner, Erik (2015-09-24)
      This thesis is devoted to the study of DNA molecules in nanochannels. In the last ten years, a large number of studies have been conducted wherein DNA molecules were confined to channels with a width of about 100 nm. These ...
    • Excited States in Negative Ions 

      Rohlén, Johan (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 ...
    • Far-infrared conformer-specific signatures of small aromatic molecules of biological importance 

      Yatsyna, Vasyl (2016)
      Our understanding of many biological processes requires knowledge about biomolecular structure and weak intra- and intermolecular interactions (e.g. hydrogen bonding). Both molecular structure and weak interactions can ...
    • Fluctuating superconductivity and pair-density wave order in the cuprate superconductors 

      Wårdh, Jonatan (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 

      Wallner, Måns (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 

      Aleman Hernandez, Felipe Ademir (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 

      Rafajlović, Marina (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 

      Gustavsson, Anna-Karin (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 

      Börjesson, Anders (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 

      Gustafsson, Kristian (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 

      Ström, Anders (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 

      Kjellberg, Mikael (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 

      Andersson, Pontus (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. ...
    • Lärares formande av en yrkesidentitet relaterad till hållbar utveckling 

      Bursjöö, Ingela (2011)
      Swedish schools are required to educate for sustainable development (ESD). The challenges for the teachers are demanding as the content is controversial and complex. This study focuses on exploring the different ways ...
    • Magnetic Thin Films with Graded and Tilted Anisotropy for Spintronic Devices 

      Fang, Yeyu (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 

      Fazlali, Masoumeh (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 ...
    • The mechanical Paul trap in the upper secondary physics laboratory 

      Kilde Löfgren, Sebastian (2023)
      In physics, toy models are often used in popular science contexts. Further, toy models have also been used to communicate some important principles of abstract phenomena qualitatively. One such example can be found in ...