Info message
Ce contenu n'est pas disponible en français.Scientific Highlights
World record in time-resolved tomography
Researchers from the Helmholtz Zentrum Berlin (HZB) and the TOMCAT beamline have achieved a new world record in time-resolved tomography by measuring over 200 tomographies per second during heating of an evolving aluminium metal foam.
Une lentille virtuelle améliore la microscopie à rayons X
Une nouvelle méthode développée par des chercheurs du PSI permet d’améliorer encore les radiographies de matériaux. Pour ce faire, les chercheurs ont déplacé une lentille optique et réalisé chaque fois une image individuelle. A partir de là, ils ont calculé une image globale à l’aide d’algorithmes informatiques.
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.
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.