Info message
Dieser Inhalt ist nicht auf Deutsch verfügbar.News & Scientific Highlights
Simulation soll bei Aufräumarbeiten in Fukushima helfen
Eine neue Simulation der gefährlichsten radioaktiven Trümmer des Kernkraftwerks Fukushima soll bei Aufräumarbeiten helfen.
Direct observation of crack formation mechanisms with operando Laser Powder Bed Fusion X-ray radiography
Operando high-speed X-ray radiography experiments reveal the cracking mechanism during 3D laser printing of a Ni superalloy.
Full-field X-ray absorption tomography reveals the chemical structure of defects in metal-organic frameworks
Cryo-full-field XANES computed tomography was used to visualize the presence and distribution of a second coordination polymer of reduced copper coordination within defect-engineered HKUST-1 MOF crystals. Observations encourage a revisitation of the structure-property relationships of defect-engineered MOFs.
Wie Katalysatoren altern
Katalysatoren, die in der Industrie eingesetzt werden, verändern über die Jahre ihre Materialstruktur. Mit einer neuen Methode haben PSI-Forschende dies nun auf der Nano-Skala untersucht.
Dreidimensionaler Blick in aktive Katalysatoren
Die operando-Röntgenspektroskopie erlaubt einen Blick ins Innere laufender Chemiereaktoren. Forschende des Karlsruher Instituts für Technologie (KIT), am Paul Scherrer Institut PSI und an der European Synchrotron Radiation Facility (ESRF) in Frankreich setzen die Methode erfolgreich ein.
Operando X-ray diffraction during laser 3D printing
Ultra-fast operando X-ray diffraction experiments reveal the temporal evolution of low and high temperature phases and the formation of residual stresses during laser 3D printing of a Ti-6Al-4V alloy. The profound influence of the length of the laser-scanning vector on the evolving microstructure is revealed and elucidated.
Inside Batteries
Lithium ion batteries (LIB) are essential in modern everyday life, with increasing interest in enhancing their performance and lifetime. Secondary particles of Li-rich cathode material were examined with correlated ptychographic X-ray tomography and diffraction microscopy at different stages of cycling to probe the aging mechanism.
Moving Atoms by Photodoping
Understanding how and how fast we can drive atoms to create a structural phase transition is of fundamental interest as it directly relates to many processes in nature. Here we show that a photoexcitation can drive a purely structural phase transition before the energy is relaxed in the material that corresponds to a “warmer” equilibrated state.
Active Sites of supported bimetallic nano-Catalysts
Dynamic Structural Changes of Active Sites in Pt–Ni Bimetallic Catalysts Revealed by a Multimodal Approach