Blättern nach Typ "cumulativeThesis"
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Vektorfeldkonzepte in der Studieneingangsphase Physik
(2024-04-16)The visualization of vector fields as vector field diagrams finds its application in various physics areas and also provides a valuable learning opportunity for physics students. By visualizing concepts and properties of ... -
Numerical Modelling of Zonal Winds on Gas Giants
(2023-12-22)The outer regions of both Jupiter and Saturn host strong, alternately eastward and westward zonal winds. These are essentially steady in time and cover all latitudes, albeit diminished in amplitude at the mid-to-high ... -
Spreading Processes in Complex Networks of Cultured Neurons and Society
(2023-12-22)Complex networks appear across various contexts of our lives. Telecommunication, transport, infrastructure and finance are candidates to come to mind, and we humans ourselves, just going about our day as usual, meeting ... -
Biomolecular space exploration - Phase space and parameter space sampling in realistic protein-lipid environments
(2023-12-11)Lipid composition affects membrane properties and specifically adapted compositions allow biomembranes to fulfill their functions. By altering membrane properties lipids regulate biological processes. Specifically, membrane ... -
Symmetries and correlations in solids probed by ultrafast high-harmonic spectroscopy
(2023-11-13)Novel material systems with correlated and tunable properties promise to push the boundaries of current information processing and energy management technologies. Their investigation requires simultaneous access to multiple ... -
Improving Monte Carlo simulations in high energy physics using machine learning techniques
(2023-09-15)Monte Carlo event generators are nowadays indispensable tools for predictions based on first principles in high energy physics, and they represent one of the mainstays of particle physics research at the Large Hadron ... -
UV laser modification of transparent materials for photonic applications
(2023-04-28)Photonic applications have experienced strong growth in recent years. Due to increasing digitalization and automation in all areas of life, further growth of photonics is expected in the future. The broad range of photonic ... -
Imaging vortex pinning and gyration by time-resolved and in-situ Lorentz microscopy
(2023-03-08)Magnetism encompasses a large variety of scientifically interesting and industrially valuable phenomena. In particular, nanoscopic magnetic textures—such as vortices, merons and skyrmions—have been in the spotlight of ... -
Transport and dynamical properties of electron-phonon coupled systems
(2023-01-31)In this thesis, I investigate the transport and dynamical properties of electron-phonon coupled systems using numerical methods. I focus on the one-dimensional Holstein model, which incorporates both polaron and charge ... -
Physical modeling of motile and sedimenting plankton: from simple flows to turbulence
(2022-11-22)Planktonic microorganisms play a fundamental role in oceanic ecology and chemical cycles. Different planktonic species are found at various levels of the oceanic trophic chain, ranging from photosynthetic organisms to ... -
Investigation of the Influence of Correlations on Photovoltaic Energy Conversion in Hot Polaron Solar Cells
(2022-08-08)In semiconductor single junction solar cells fundamental limitations are given by the two major intrinsic loss mechanisms: a) inability to absorb photons with energies below the band and b) thermalization of photon energies ... -
Analysis of solar faculae using stray-light-corrected spectropolarimetric data and numerical simulations
(2022-04-28)The objective of this thesis is to develop methods to improve the quality of restored ground-based observations, and to use such restored observations, along with 3D radiative MHD simulations, to study the properties of ... -
Towards constraining the solar dynamo with observational studies of the Sun's magnetic field
(2022-04-26)A complete understanding of the physical mechanisms responsible for the solar magnetic field is yet to be attained. The origin of the Sun's magnetic field, with its spatio-temporal coherence, is attributed to a dynamo ... -
Ultrafast transmission electron microscopy of a structural phase transition
(2021-08-09)High hopes are placed on materials with tunable properties and excitations for future applications in energy conversion devices. Functionality of devices, however, not only arises from the properties of individual materials ... -
Active Emulsions: Physicochemical Hydrodynamics and Collective Behavior
(2021-07-02)Active matter is a collection of constituent elements that constantly consume energy, convert it to mechanical work, and interact with their counterparts. These materials operate out of equilibrium and exhibit fascinating ... -
Manifestations of Memory in Time- and Ensemble-Average Statistical Mechanics of Low-dimensional Physical Observables
(2021-06-07)The study of stochastic processes plays a very important role in our current understanding of Statistical Physics, in particular many results from this field have found successful applications in biological, socio-economics ... -
Data-driven modelling of non-linear systems by means of artificial neural network hybrids
(2021-04-16)In the natural sciences, theory and experiment are in permanent interaction with each other. Experimental data provide impulses for new theories and theories suggest new experimental set-ups. Earlier, these two areas had ... -
Effective Description of Superstructures in Turbulent Convection
(2021-03-04)This thesis is dedicated to the study of turbulent superstructures in Rayleigh-Bénard convection. Turbulent superstructures are horizontally extended large-scale flow patterns that emerge despite the presence of strong ... -
Superstructures, heat and momentum transport in inclined turbulent thermal convection of low-Prandtl-number fluids
(2020-09-24)Recent experiments by Vasil’ev et al. (2015a) using liquid sodium as working fluid inside an extremely slender Rayleigh-Bénard convection (RBC) cell of the diameter-to-height aspect ratio Γ = 1/20, which was inclined ... -
Polaronic behaviour at manganite interfaces studied by advanced Raman scattering techniques
(2020-03-20)This work focusses on the polaronic behaviour at manganite interfaces studied by various Raman spectroscopy techniques. Temperature- and magnetic-field-dependent studies probe the polaronic behaviour at the internal ...