Browsing Doctoral Theses / Doktorsavhandlingar Institutionen för fysik by Title
Now showing items 1-20 of 75
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A Play of Light and Spins: Excitation and Detection of Non-linear Magnetization Dynamics using Light
(2020-09-02)The excitation and detection of magnetization dynamics play key roles in the field of spintronics and magnonics. In this thesis, we investigate a contactless method of exciting nonlinear magnetization dynamics using a ... -
Active Matter in a Critical State: From passive building blocks to active molecules, engines and droplets
(2020-12-19)The motion of microscopic objects is strongly affected by their surrounding environment. In quiescent liquids, motion is reduced to random fluctuations known as Brownian motion. Nevertheless, microorganisms have been able ... -
Advanced methods for the calibration of optical tweezers
(2023-09-08)Optiska pincetter har sedan Arthur Ashkin och hans kollegors uppfinning på 1980-talet möjliggjort noggrann manipulation av mikroskopiska partiklar. Denna teknik har haft betydande inverkan inom flera områden, inklusive ... -
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 ... -
Angular dynamics of small particles in fluids
(2015-11-20)This thesis concerns the angular motion of small particles suspended in fluid flows. A small particle experiences a hydrodynamic torque due to the local fluid velocity, and this torque leads to rotational motion. When ... -
Annotation-free deep learning for quantitative microscopy
(2024-12-05)Quantitative microscopy is an essential tool for studying and understanding microscopic structures. However, analyzing the large and complex datasets generated by modern microscopes presents significant challenges. Manual ... -
Binding Energies and Lifetimes in Negative Ions
(2024-03-15)Negative ions hold significant interest because of their importance in understanding electron correlation. Further, they capture substantial focus for their role in, for example: stellar environments, medical applications, ... -
Calibration of medical displays
(2015-09-02)Calibration of medical displays is important in order for images to be displayed consistently. A consistent appearance ensures that all images are always perceived in the same way regardless of display device, location and ... -
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 ... -
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 ... -
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 ... -
Deep Learning Applications - From image analysis to medical diagnosis
(2021-05-11)Deep learning is a subcategory of machine learning and artificial intelligence. Instead of using explicit rules to perform a desired task as in standard algorithmic approaches, machine-learning algorithms autonomously learn ... -
Designer magnetoplasmonics for adaptive nano-optics
(2017-08-24)Materials that provide real-time control of the fundamental properties of light at visible and near-infrared frequencies enable the essential components for future optical devices. Metal nanostructures that couple ... -
Development and Applications of Microfluidic Devices for Liver-on-a-Chip Studies
(2021-10-12)Modeling the human physiology in vitro is a challenging task, yet one of importance for the development of drugs and the study of diseases. To better address the complexities of human organs, microfluidic systems called ... -
Double Inner-Shell Vacancies in Molecules
(2019-05-15)Molecular electronic states possessing a double core-vacancy, referred to as double-core-hole (DCH) states, were predicted more than thirty years ago, to have interesting properties, which would allow one to probe matter ... -
Dynamics and Structure of Negative Ions - Photoinduced double detachment on nano- and femtosecond time scales
(2020-05-05)The goal of the presented work is to investigate double detachment of negative ions on nano- and femtosecond time scales. I have performed three types of experiments. Femtosecond time resolved pump-probe experiments ... -
Dynamics of particles in fluids: effects of correlations and interactions
(2022-01-24)Particles suspended in turbulent fluid flows are common in Nature and in technological applications. In some cases, the relative dynamics of spherical particles may be of interest. One example is small rain droplets in ... -
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 ... -
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 ... -
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 ...