Fondements de la nature

A l’Institut Paul Scherrer, les scientifiques cherchent des réponses à la question essentielle des structures élémentaires de la matière et des principes fondamentaux de fonctionnement dans la nature. Ils étudient la structure et les propriétés des particules élémentaires – les plus petits composants de la matière – ou se penchent sur la question de savoir comment les molécules biologiques sont structurées et remplissent leur fonction. Les connaissances qu’ils acquièrent de la sorte ouvrent de nouvelles pistes de solution en sciences, en médecine ou dans le domaine des technologies.

Pour en savoir plus, reportez-vous à Aperçu Fondements de la nature

U19-Rollhockey-WM 2024

Physiklaborant-Lernender an der U19-Rollhockey WM

Diego G., Lernender Physiklaborant im 3. Lehrjahr, ist leidenschaftlicher Rollhockey-Spieler und schaffte es ins U19-Nationalkader für die Weltmeisterschaft vom 8. bis 14. September in Novara (ITA). Seine Erfahrungen und Eindrücke schildert er im folgenden Bericht.

Lenzburg 2024

Tag der Berufe

Mit der Swissmechanic gemeinsam in Lenzburg.
 

Zhu et al

Continuum Excitations in a Spin Supersolid on a Triangular Lattice

Magnetic, thermodynamic, neutron diffraction and inelastic neutron scattering are used to study spin correlations in the easy-axis XXZ triangular lattice magnet K2Co(SeO3)2. Despite the presence of quasi-2D “supersolid” magnetic order, the low-energy excitation spectrum contains no sharp modes and is instead a broad and structured multiparticle continuum. Applying a weak magnetic field ...

Cover 5423

Best practices for harnessing operando X-ray absorption spectroscopy in electrocatalytic water splitting studies

X-ray absorption spectroscopy (XAS) has found applications in a range of fields including materials, physics, chemistry, biology and earth science. XAS can probe the local electronic and geometric structure, such as the average oxidation state, coordination environment and interatomic distances, surrounding an element of interest. Thus, XAS is a valuable tool to inform catalyst design by tracking catalyst evolution under operating conditions, for example, via providing dynamic snapshots of the essential information.

Marius Köppel PhD

Marius Köppel defends his thesis on the Mu3e Data Acqusistion System

Marius Köppel has defended his PhD on the data acquisition system for Mu3e at Johannes Gutenberg University Mainz.

Andriushin et al

Reentrant multiple-q magnetic order and a “spin meta-cholesteric” phase in Sr3Fe2O7

Topologically nontrivial magnetic structures such as skyrmion lattices are well known in materials lacking lattice inversion symmetry, where antisymmetric exchange interactions are allowed. Only recently, topological multi-q magnetic textures that spontaneously break the chiral symmetry, for example, three-dimensional hedgehog lattices, were discovered in centrosymmetric compounds, where they are instead driven by frustrated interactions. Here we show that ...

TL_Chichkov

Julius Springer Price 2024

Prof. Thomas Lippert, Editor in Chief at Applied Physics A, awards Prof. Boris Chichkov the 2024 Julius Springer Prize for Applied Physics. 

3D image of a magnetic skyrmion

Skyrmion topology quantified in 3D

Researchers from an international collaboration between the United States of America and Switzerland have performed three-dimensional magnetic imaging of a magnetic skyrmion using soft X-ray laminography. This allowed for the investigation, in three dimensions, of the topological profile of the magnetic skyrmions.

Roboter

Mit dem Fanuc Industrieroboter zum erfolgreichen Bauprojekt

Im Herbst 2023 haben wir einen Fanuc Industrieroboter gekauft. Nach langem Warten wurde dieser am 1. Februar 2024 am PSI angeliefert. Leider musste der Roboter erst noch auf seine ersten Aufgaben warten, da ich zuerst noch meine praktische Abschlussarbeit beenden musste.