X-Ray Tomography Group
Prof. Stampanoni heads a group of over 20 people, including three staff scientists, two technicians, one controls engineer, and many postdocs and PhD 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 transition of such work to conventional x-ray sources.
PSI Thesis Medal goes to Dr. Matias Kagias
The PSI Thesis Medal is awarded every second year to the best PhD thesis performed at the Paul Scherrer Institut.
Matias received the prize for his excellent thesis entitled "Direct Self-Imaging Methods for X-ray Differential Phase and Scattering
Hector Dejea receives an Outstanding Poster Presentation Award at the bMASR Conference
Hector Dejea, a PhD at TOMCAT, received an Outstanding Poster Presentation Award at the 9th bioMedical Applications of Synchrotron Radiation (bMASR2018) conference held in Beijing (China) from October 23rd till 27th 2018. He presented the latest results of his work, entitled Multiscale X-ray Phase Contrast Imaging for Assessing Cardiac Remodelling: towards in-vitro applications.
Soft-tissue evidence for homeothermy and crypsis in a Jurassic ichthyosaur
Synchrotron-based X-ray tomographic microscopy of melanophores (skin pigment cells) of an amazingly well preserved 180 million years old ichtyosaur (extinct marine reptile similar to whales) contributed in a multidisciplinary investigation to the new findings published today in Nature.
La spin-off du PSI GratXray remporte le Swiss Technology Award 2017
Une spin-off du PSI remporte le Swiss Technology Award 2017: la jeune entreprise GratXray développe une nouvelle méthode de diagnostic précoce du cancer du sein.
First protein structure solved using the JUNGFRAU detector!
JUNGFRAU is a charge-integrating, two-dimensional pixel detector developed at the Paul Scherrer Institut for use at free-electron lasers, in particular SwissFEL, and synchrotron light sources. On the 10th October, the first protein crystallography experiment using the JUNGFRAU detector, was performed at the beamline X06SA (PXI) of the Swiss Light Source by the members of the Protein Crystallography and Detectors groups at PSI.
Single shot grating interferometry demonstrated using direct conversion detection
Researchers at the Paul Scherrer Institute's Swiss Light Source in Villigen, Switzerland, have developed an X-ray grating interferometry setup which does not require an analyzer grating, by directly detecting the fringes generated by the phase grating with a high resolution detector. The 25um pitch GOTTHARD microstrip detector utilizes a direct conversion sensor in which the charge generated from a single absorbed photon is collected by more than one channel. Therefore it is possible to interpolate to achieve a position resolution finer than the strip pitch.
Watching lithium move in battery materials
In order to understand limitations in current battery materials and systematically engineer better ones, it is helpful to be able to directly visualize the lithium dynamics in materials during battery charge and discharge. Researchers at ETH Zurich and Paul Scherrer Institute have demonstrated a way to do this.
Preserved Embryos Illustrate Seed Dormancy in Early Angiosperms
The discovery of exceptionally well-preserved, tiny fossil seeds dating back to the Early Cretaceous corroborates that flowering plants were small opportunistic colonizers at that time, according to a new Yale-led study.
Multiresolution X-ray tomography, getting a clear view of the interior
Researchers at PSI have developed a technique that combines tomography measurements at different resolution levels to allow quantitative interpretation for nanoscale tomography on an interior region of interest of the sample. In collaboration with researchers of the institute AMOLF in the Netherlands and ETH Zurich in Switzerland they showcase their technique by studying the porous structure within a section of an avian eggshell. The detailed measurements of the interior of the sample allowed the researchers to quantify the ordering and distribution of an intricate network of pores within the shell.
Côté menu, les premiers mammifères avaient déjà leurs préférences
De toutes nouvelles analyses de petits mammifères fossiles livrent de nouveaux éléments sur la connaissance du menu de nos plus lointains ancêtres. Les résultats permettent de comprendre comment sont apparues certaines caractéristiques typiques des mammifères actuels. Ces conclusions reposent sur des analyses, qui ont été réalisées à la Source de Lumière Suisse (SLS) de l’Institut Paul Scherrer, au moyen de la tomographie par rayons X.
Le contraste de phase améliore la mammographie
Grâce à l'imagerie par contraste de phase, des chercheurs de l’EPF Zurich, de l’Institut Paul Scherrer (PSI) et de l’hôpital cantonal de Baden ont réussi à obtenir des mammographies, grâce auxquelles il est possible de procéder à une évaluation plus précise des cancers et des précancers du sein. Ce procédé pourrait contribuer à une utilisation plus ciblée des biopsies, et à l’amélioration des examens de suivi.