Doctoral Theses / Doktorsavhandlingar Institutionen för fysik
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Optical levitation and Mie Fano combs
(2025-05-11)The smallest component of light, the photon, carries a small amount of momentum. When matter refracts, reflects, or absorbs light, some of this momentum is transferred to it, meaning that light can push or even pull matter. ... -
A Fragile Hold on the Electron: Probing the Limits of Negative Ion Studies
(2025-04-25)Negativa joner är unika kvantsystem vars struktur och dynamik i hög grad påverkas av elektronkorrelationseffekter. På grund av deras svagt bundna natur och avsaknaden av långräckviddiga Coulomb-potentialer saknar dessa ... -
Learning from Data and Physics for Multiscale Modeling of Woven Composites
(2025-04-03)Developing new composite materials with enhanced properties relied on a long trial-and-error process, requiring extensive mechanical testing and deep knowledge about fundamental phenomena and constituent interactions. While ... -
Spintronic oscillator networks for unconventional computing accelerators
(2025-03-17)Networks of coupled oscillators are fundamental to various natural and technological processes. For instance, networks of biological neurons exhibiting oscillatory behavior are crucial for cognitive functions, memory, and ... -
Multi-Particle Coincidence Studies of Molecular Single-Photon Ionization Processes
(2025-03-10)In this thesis, single photon ionization processes are investigated by means of multi- particle coincidence measurements. The experimental method combines a magnetic bottle time of flight electron spectrometer with ion ... -
Deep Learning Enhanced Optical Methods for Single-Plankton Studies
(2025-03-05)Among Earth’s earliest life forms, cyanobacteria reshaped the planet by oxygenating the atmosphere during the Great Oxidation Event 2.4 billion years ago. This process, which led to ozone formation and UV protection, paved ... -
Neural Networks for Complex Systems: From Epidemic Modeling to Swarm Robotics
(2025-03-04)Machine learning refers to data-driven approaches first introduced from the 1950s, drawing inspiration from developments in neurosciences. An artificial neuron is the smallest computational unit in machine learning. Neural ... -
Microfabrication Technique Applications: From Passive Particle Manipulation to Active Microswimmers, Micromachines, and Fluidic Control
(2024-12-10)Overcoming Brownian motion at the micro- and nanoscale to achieve precise control of objects is crucial for fields such as materials science and biology. Significant progress has been made in trapping and manipulating ... -
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 ... -
High-threshold error-correcting codes for biased noise with advanced decoding strategies
(2024-11-18)Quantum computers are highly sensitive to noise due to interactions with the environment, which severely limits the utility of near-term devices. Quantum error correction addresses this challenge by encoding logical ... -
Ultrafast magnetodynamics of self-localized spin textures driven by spin current
(2024-11-07)Spintronics is a developing field of electronics that utilizes electron spin. This additional degree of freedom opens up new horizons for the design of non-volatile memory, logic, signal, and data processing devices. In ... -
Microscopic approaches for bacterial collective behaviour studies
(2024-07-26)Bacteria significantly impact our lives, from their beneficial role as probiotics to their involvement in infection environments. Their widespread presence is largely due to their ability to adapt to diverse conditions ... -
Microswimmer Navigation in Turbulence
(2024-04-26)This thesis provides a summary of our exploration of navigation strategies for microswimmers with limited control and local sensing capabilities, drawing inspiration from copepods. Our research concentrates on two critical ... -
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 ... -
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, ... -
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 ... -
Spectroscopy of Stable and Radioactive Negative Ions
(2023-04-03)Negative ions are unique quantum systems which are of fundamental interest within the field of atomic physics due to the importance of the electron correlation in their creation, stability, and existence. Properties of ... -
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 ... -
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 ... -
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 ...