Into the fourth dimension: time-resolved soft X-ray laminography
Combining time-resolved soft X-ray STXM imaging with magnetic laminography, researchers were able to investigate magnetization dynamics in a ferromagnetic microstructure resolved in all three spatial dimensions and in time. Thanks to the possibility of freely selecting the frequency of the excitation applied to the magnetic element, this technique opens the possibility to investigate resonant magneto-dynamical processes, such as e.g. magnetic vortex core gyration and switching, and spinwave emission.
Aperçu de l’avenir magnétique
Des chercheurs du PSI observent pour la première fois un comportement spécifique de la glace magnétique.
Hercules School 2022
PSI hosted again the Hercules School in March 2022. We had the pleasure to welcome 20 international PhD students, PostDocs and scientists to demonstrate our state-of-the-art techniques and methodologies at our large scale facilities, the Swiss Light Source (SLS), the Swiss Spallation Neutron Source (SINQ) and our free electron laser SwissFEL.
Une nouvelle lentille à rayons X facilite l’exploration du nanomonde
Une lentille achromatique pour la lumière de type rayons X est pour la première fois développée au PSI.
Light springs and magnetic vortices: a new kind of dichroism
In contrast to circular dichroism that is dependent on the polarization, helicoidal dichroism induced by a twisted wave front profile is scarcely known. The first evidence of magnetic helicoidal dichroism has now been observed in an experiment using Spiral Fresnel Zone Plates developed at the Paul Scherrer Institut.
L’univers miraculeux des antennes moléculaires
Comment des processus dans des cellules peuvent être activer et désactiver par des récepteurs de lumière
Mobile excitons as neutral information carriers
These quasiparticles have the potential to revolutionise electronics - if they can move. Mobile excitons have now been observed for the first time in a metal.
Lighting up the appealing world of hybrid perovskites
Researchers from Italy, in collaboration with the Paul Scherrer Institut, successfully used the macromolecular crystallography beamline X06DA-PXIII at the Swiss Light Source to characterize promising perovkites materials used in solar cells and other photodetector devices.
Opening the door to X-ray quantum optics
The 'perfect' X-ray beam-splitter: Researchers at SwissFEL have an ingenious solution to produce coherent copies of pulses, facilitating a realm of new X-ray techniques.
How to get chloride ions into the cell
A molecular movie shot at PSI reveals the mechanism of a light-driven chloride pump
Une simulation pour faire avancer les travaux de déblaiement à Fukushima
Une nouvelle simulation des débris radioactifs les plus dangereux de la centrale nucléaire de Fukushima devrait faire avancer les travaux de déblaiement.
EU XFEL Young Scientist Award for Camila Bacellar
Camila Bacellar, beamline scientist and group leader of the Alvra endstation at SwissFEL, has received the European XFEL Young Scientist Award. The award recognises the contribution of young scientists to research at the European XFEL.
Covid-19: un nouveau test rapide plus performant
Le test identifie les différents variants du virus et améliore le pronostic de la maladie.
En route vers des ordinateurs quantiques plus compacts grâce à la topologie
Des chercheurs en quête de qubits particulièrement stables ont étudié en détail la distribution des électrons dans deux semi-conducteurs.
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.
Plusieurs millions d’euros pour la recherche quantique et la recherche sur le cerveau
Le Conseil européen de la recherche approuve des projets du PSI sur le développement d'un calculateur quantique et sur la recherche sur le cerveau pour un montant de 5 millions d'euros.
Les semi-conducteurs atteignent le monde quantique
La technologie des semi-conducteurs pourrait être améliorée et prendre un nouveau virage, grâce à l’exploitation des effets quantiques dans des supraconducteurs.
Priority access call for work on combating COVID-19 continues
On January 30th, 2020, the WHO declared the recent outbreak of coronavirus disease 2019 (COVID-19), a public health emergency of international concern. It declared that there is an urgent need to improve our understanding of the newly identified virus and its possible future evolution as well as to contain the spread; to develop precise diagnostics and treatment, and to improve the public health response and patient care.
The COVID priority access call continues and is still open in 2022.
Fingerprint of Copper in Peptides Linked to Alzheimer's Disease
In an interdisciplinary project, researchers from the Laboratory of Nanoscale Biology in BIO and the Laboratory for Condensed Matter in PSD have revealed the reaction between the nitrogen atoms of the amyloid-beta peptide and copper/zinc ions by using soft X-ray absorption spectroscopy.
Ground-breaking technology development recognised
PSI researchers win the international Innovation Award on Synchrotron Radiation for 3D mapping of nanoscopic details in macroscopic specimens, such as bone.
Overview of SwissFEL dual-photocathode laser capabilities and perspectives for exotic FEL modes
SwissFEL is a compact, high-brilliance, soft and hard X-ray Free Electron Laser (FEL) facility laser composed of two parallel beam lines seeded by a common linear accelerator (LINAC), and a two-bunch photo-injector. For the injector, an innovative dual-photocathode laser scheme has been developed based on state-of-the-art Ytterbium femtosecond laser systems. We just published an overview of the the SwissFEL Photo Cathode Drive Lasers (PCDL) performance, pulse shaping capabilities as well as the versatility of the systems, which allow many different modes of operation of SwissFEL [1]. The full control over the SwissFEL electron bunch properties via the unique architecture of the PCDL will enable in the future the advent of more advanced FEL modes; these modes are, but not restricted to, the generation of single or trains of sub-fs FEL pulses, multi-color FEL and finally the generation of fully coherent X-ray pulses via laser-based seeding.
Glycation of collagen: Quantifying rates
Collagen is abundant in the connective tissue of human beings, e.g. in tendons, ligament and cornea. Glycation of collagen distorts its structure, renders the extracellular matrix stiff and brittle and at the same time lowers the degradation susceptibility thereby preventing renewal. Based on models and with parameters determined from experimental data, we describe the glycation of type 1 collagen in bovine pericardium derived bio-tissues upon incubation in glucose and ribose. We hope that this contributes to a better quantitative understanding of the effects of diabetes on collagen.
Contrôle ultrarapide de matériaux quantiques
Utiliser la lumière pour modifier fondamentalement les propriétés des solides
Nouvel antiparasite
Des chercheurs du PSI identifient un principe actif potentiel contre plusieurs parasites unicellulaires, dont ceux à l’origine du paludisme et de la toxoplasmose.
Perspective en 3D: La Source de Lumière Suisse SLS
Accélérateur linéaire, anneau d'accélération, anneau de stockage: notre graphique 3D de la Source de Lumière Suisse montre l'intérieur de l'installation et comment elle sert la recherche.
Dr. Manuel Guizar-Sicairos is awarded ICO prize
Dr. Manuel Guizar-Sicairos, beamline scientist at the cSAXS beamline, is the 2019 recipient of the International Commission for Optics (ICO) Prize. The distinction was awarded in the EOSAM conference in Rome.
Microscopie à rayons X avec 1000 images tomographiques par seconde
A la Source de Lumière Suisse SLS, des chercheurs ont établi un nouveau record dans le cadre d’une méthode d’imagerie appelée tomoscopie.
L’énigme de la coquille souple
Pourquoi la coquille d'un animal marin est molle dans l'eau mais dure dans l'air.
Le pratique dans l’extraordinaire
Niels Schröter se voit décerner un prix de la Société Suisse de Physique (SSP).
Nanobodies against SARS-CoV-2
In a study published in EMBO Journal, researchers at the Max Planck Institute for Biophysical Chemistry, Göttingen, Germany, developed nanobodies that efficiently block the coronavirus SARS-CoV-2 and its variants. The high resolution structural characterization was performed at the X10SA crystallography beamline at the Swiss Light Source.