X-Ray Tomography Group
TOmographic Microscopy and Coherent rAdiology experimenTs
Prof. Stampanoni heads a group of over 20 people, including four beamline scientists, one industrial liaison scientist, two technicians, several scientists, many postdocs, PhD students, Master students, and Bachelor students. The team focuses on the development of tools, both instrumentation and algorithms, for tomographic X-ray imaging, exploiting synchrotron and laboratory sources. The group is engaged in the design and construction of ultra-fast data acquisition systems (stroboscopic coherent X-ray radiology and tomography) to provide dynamic investigation of rapidly evolving systems. The group also intensively develops optimized applications for fast, concurrent post-processing of tomographic data starting from simple normalization corrections to ad-hoc reconstruction and artifact reductions algorithms. Finally, the group investigates, creates and optimizes novel imaging modalities based on the coherent properties of synchrotron radiation and works on the translation of such work to conventional X-ray sources.
Scientific Highlights
Cause of clogged hypodermic needles discovered
Researchers at PSI and the ANAXAM technology transfer center have found the cause of clogging in prefilled syringes.
3D insights into an innovative manufacturing process
3D printing for creating complex shapes
Earlier detection of breast cancer
3D X-rays can improve breast cancer screening.
Jisoo Kim receives PSI Thesis Medal 2023
Jisoo Kim receives the PSI Thesis Medal 2023. With this award, PSI recognises outstanding PhD theses, achieving a high degree of innovation and potentially leading to scientific breakthroughs. Jisoo holds a Master of Science from the Korean Advanced Institute of Science &Technology and defended his thesis entitled “Towards time-resolved X-ray scattering tensor tomography” at ETH Zürich.
Jisoo Kim bags the 2022 Werner Meyer-Ilse Award
Jisoo Kim was awarded the 2022 Werner Meyer-Ilse Memorial Award. The WMI Award is given to young scientists for exceptional contributions to the advancement of X-ray microscopy through either outstanding technical developments or applications, as evidenced by their presentation at the International Conference on X-ray Microscopy and supporting publications. Jisoo was awarded for his development of the method "Time-resolved x-ray scattering tomography for rheological studies", and is co-recipient of the award with Yanqi Luo from the Advanced Photons Source for her work on applications. The award was presented during the 15th International Conference on X-ray Microscopy XRM2022 hosted by the National Synchrotron Radiation Research Center (NSRRC) in Hsinchu, Taiwan on 19 - 24 June, 2022.
Broadening the field of view with a fan-shaped source grating
The orientation mismatch between the cone beam of an X-ray tube and the grating lines in a flat substrate remains a big challenge for laboratory grating-based X-ray interferometry, since it severely limits the imaging field of view. To solve this problem, we fabricated fan-shaped G0 source gratings by modulating the electric field during the deep reactive ion etching of silicon. With local electric field modulation in plasma we can etch high aspect ratio fan-shaped gratings that match the X-ray cone beam emission of a tube source. This new technology replaces the grating bending and allows a more compact design with larger field of view. Our work have recently been published in Applied Surface Science.