Time-resolved x-ray phase-contrast tomography of sedimenting micro-spheres
2019-04-21 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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- Authors
- Ruhlandt, Aike ; Salditt, Tim
- Abstract
- We have implemented a time-dependent (dynamic) x-ray tomography of sedimenting micro-spheres suspended in water. To achieve phase contrast at high magnification we use the divergent and highly coherent beam emitted from an x-ray waveguide. Holograms are recorded with 5 ms acquisition time while the sample is rotated at 1 Hz, over a run of 40 s. We show that under these conditions, more than 20 000 individual particle trajectories can be tracked. The analysis of the trajectories shows apparent super-diffusive behavior due to collective flow patterns, as also further evidenced by plotting the temporal averaged spatial distribution of particle densities and velocities.
- Issue Date
- 21-April-2019
- Journal
- New Journal of Physics
- Organization
- Institut für Röntgenphysik ; Fakultät für Physik
- Working Group
- RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)
- Language
- English
- Subject(s)
- x-ray imaging
- Sponsor
- Open-Access-Publikationsfonds 2019