Dokumente Fakultät für Physik (inkl. GAUSS) nach Gutachter "Salditt, Tim Prof. Dr."
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Functional Domain Motions and Processivity in Bacterial Hyaluronate Lyase
(2007-08-02)Processive enzymes are a special class of enzymes which presumably remain attached to their polymeric substrates between multiple rounds of catalysis. Due to this property, the substrate ... -
Hard X-ray Waveguide Optics
(2005-11-18)The thesis is about the preparation of intense hard X-ray nanobeams focusing on the use of X-ray waveguides in resonant beam coupling and front coupling geometry. -
Herstellung von Optiken für weiche Röntgenstrahlung und deren Charakterisierung an Labor- und Synchrotronstrahlungsquellen
(2012-03-29)Within the last decades soft X-ray microscopy methods win increasing importance. Labratory-scale laser-induced plasma sources make this radiation available to a larger community of researchers ... -
High-Resolution Microscopy with Photoswitchable Organic Markers
(2009-03-23)The resolution of conventional microscopes is limited by Abbe"s diffraction barrier. The resolution barrier, however, can be fundamentally broken by sequentially switching marker substances ... -
Hochauflösende Bildgebung und NEXAFS-Spektroskopie mit weicher Röntgenstrahlung aus laserinduzierten Plasmen
(2019-01-24)Soft x-ray microscopy and absorption spectroscopy are extremely useful tools for high-resolution imaging and chemical analysis of samples in various scientific fields. However, due to the required high photon flux of ... -
Intelligent-Illumination STED
(2018-04-10)Recently established fluorescence superresolution microscopy techniques, such as stimulated emission depletion (STED), are capable of imaging fixed and living cells at the nanometer scale. In STED, ON- and OFF-switching ... -
isoSTED microscopy for live cell imaging
(2019-05-08)Far-field fluorescence microscopy is a versatile tool for the non-invasive investigation of intracellular structures and thus for live cell imaging. This is a major advantage over other microscopy methods such as electron ... -
Localizing and tracking of single molecules with a MINFLUX-microscope for various applications
(2022-01-25)Recently MINFLUX microscopy was first published, a technique that localizes single fluorescent molecules by probing with a structured illumination excitation beam featuring a central intensity minimum. Single nanometer ... -
Low-dose, high-throughput scanning small-angle X-ray scattering of adherent mouse embryonic fibroblasts
(2022-02-24)Biological cells are highly variable: differences in e. g. gene expression emerge even among monoclonal cells in the same culture dish. The characterization of a highly variable statistical population calls for high-throughput ... -
Materie-Optik mit Edelgasmolekülen an Nanostrukturen
(2004-01-26)The advance of matter optics, thus the coherent scattering of an atom or molecule beam from a nanostructured grating, recently gave conclusive evidence for the extremely weakly bound diatomic ... -
Measurement of the stopping power of water for carbon ions in the energy range of 1 MeV - 6 MeV using the inverted Doppler–shift attenuation method
(2016-12-08)Cancer therapy using carbon ions has gained increasing interest in the last decade due to its advantageous dose distributions. For the dosimetry and treatment planning, the accurate knowledge of the stopping power of water ... -
Modeling electrodynamics in the vicinity of metal nanostructures
(2019-03-08)In this work, we show how a profound theoretical understanding of a seemingly exotic phenomenon, namely the influence of metal structures on fluorescence lifetimes, has lead to the development of a microscopy technique ... -
Multiscale X-Ray Analysis of Biological Cells and Tissues by Scanning Diffraction and Coherent Imaging
(2018-12-13)The past 70 years of muscle research have profoundly shaped our current understanding of the structure and function of muscle. X-ray diffraction became a key method in its structural analysis and yielded valuable insights ... -
Nanoscale Waveguiding Studied by Lensless Coherent Diffractive Imaging using EUV High-Harmonic Generation Source
(2017-07-24)The challenge of nanometric imaging drives intense efforts in applied sciences and fundamental research. Following the physical law of diffraction, the utilization of extreme ultraviolet (EUV) or X-ray radiation for imaging ... -
Next-Generation Ultrafast Transmission Electron Microscopy – Development and Applications
(2018-08-22)The present cumulative thesis covers the development and applications of a novel type of ultrafast transmission electron microscope (UTEM) employing high-coherence electron pulses from a nanoscale photocathode. Specifically, ... -
Phase behaviour of random copolymers and crosslinked homopolymer blends
(2005-11-25)The phase behaviour of molten linear random block copolymers and of randomly crosslinked homopolymer blends is studied in the framework of statistical mechanics based on microscopic models.In ... -
Phase retrieval for object and probe in the optical near-field
(2016-01-12)Lensless, holographic X-ray microscopy is a non-invasive imaging technique that provides resolution on the nanometer scale. Therefore, a divergent, coherent and especially clean wavefront impinging on the sample is needed. ... -
Primary Effects of X-ray and Photo-Absorption Induced Excitations in Biomolecules
(2013-06-27)To see whether single molecule scattering experiments can yield atomic resolution structures of biomolecules, it is necessary to understand the physics underlying the radiation damage processes induced by the X-ray ... -
Quantum Sensing with NV Centers in Diamond
(2019-10-22)This thesis is concerned with studies involving quantum sensing based on Nitrogen-Vacancy (NV) center in diamond. Essentially, it attempts to address two important problems. First, enhancing the sensitivity of a single ... -
Scanning X-Ray Nano-Diffraction on Eukaryotic Cells: From Freeze-Dried to Living Cells
(2013-12-13)The cytoskeleton of eukaryotic cells is a complex and dynamic network of different biopolymers, which plays an important role in, e.g., the determination of cellular shape, mechanical properties, and consequently specific ...