7 papers
Fast Ptychographic Near-Field Computed Tomography
Sami Wirtensohn, Silja Flenner, Imke Greving +13
Near-field X-ray ptychography enables quantitative three-dimensional imaging with nanometer-scale resolution, but its broader application is limited by long acquisition times - oft…
Directional Dark Field for Nanoscale Full-Field Transmission X-Ray Microscopy
Sami Wirtensohn, Silja Flenner, Dominik John +12
Dark-field X-ray imaging visualizes structural inhomogeneities through small-angle scattering, but existing directional methods are confined to the micrometer scale. While recent a…
Self-supervised physics-informed generative networks for phase retrieval from a single X-ray hologram
Xiaogang Yang, Dawit Hailu, VojtÄch Kulvait +8
X-ray phase contrast imaging significantly improves the visualization of structures with weak or uniform absorption, broadening its applications across a wide range of scientific d…
Nanoscale Dark-Field Imaging in Full-Field Transmission X-Ray Microscopy
Sami Wirtensohn, Peng Qi, Christian David +3
The dark-field signal uncovers details beyond conventional X-ray attenuation contrast, which is especially valuable for material sciences. In particular, dark-field techniques are…
ContextLoss: Context Information for Topology-Preserving Segmentation
Benedict Schacht, Imke Greving, Simone Frintrop +2
In image segmentation, preserving the topology of segmented structures like vessels, membranes, or roads is crucial. For instance, topological errors on road networks can significa…
3D evolution of protein networks and lipid globules in heat-treated egg yolk
Felix Wittwer, Nimmi Das Anthuparambil, Frederik Unger +5
Upon heating, egg yolk transforms from a liquid to a gel due to protein denaturation. This process can serve as a useful model to better understand protein denaturation in general.…