6 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…
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.…
An ontology-based description of nano computed tomography measurements in electronic laboratory notebooks: from metadata schema to first user experience
Fabian Kirchner, D. C. Florian Wieland, Sarah Irvine +12
In recent years, the importance of well-documented metadata has been discussed increasingly in many research fields. Making all metadata generated during scientific research availa…