Welcome to PSI, the largest research institute for natural and engineering sciences in Switzerland.
Recent highlights from our research
Using AI to identify genetic perturbations from cell images
New AI identifies genetic perturbations in chromatin – a potential approach in diagnostics and drug development.
World record attosecond measurement at SwissFEL
Scientists at SwissFEL can measure X-ray pulses with attosecond time resolution.
A tiny golden object from Roman times
PSI’s David Mannes has used neutrons to unravel the mystery of a fascinating archaeological artefact.
Topic cloud
Current upgrade projects and research initiatives
Together with industry to innovation
A superlative milestone
PSI spin-off Araris Biotech AG achieves valuation at unicorn-level!
ESA comes to Switzerland
The signing of a contract between the European Space Agency ESA and PSI marks the start of the European Space Deep-Tech Innovation Centre ESDI.
How catalysts remove dangerous nitrogen oxides
In industrial catalysis, iron is not equal to iron.
The people at PSI
Creating circuit diagrams of the brain
Using brain circuit diagrams to understand Alzheimer's.
With pad, pencil, and algorithms
Physicist Dominik Sidler is developing fundamental theories for previously inexplicable phenomena.
Soldering on a big stage
Whoever makes it onto the podium here is one of the world's best professional talents: PSI electronics engineer Melvin Deubelbeiss won the silver medal at WorldSkills 2024.
PSI on social media
#LehreAmPSI:
Werde ICT-Fachmann/-frau EFZ
ICT-Fachfrauen und ICT-Fachmänner werden vielseitig eingesetzt und benötigen ein breites und aktuelles Wissen. Sie sind erste Ansprechpersonen bei…
What has de-icing salt got to do with radioactivity? 🧂 A test material that demonstrates the sensitivity of the detector – even from a height of 90 metres! Curious to learn more? Watch the full …
New, state-of-the-art manufacturing techniques, known collectively as #advanced #manufacturing, are of key importance to Switzerland’s future as an industrial location.
At Paul Scherrer Institute…
🧪 How small is small? PSI researchers measure atomic nucleus with record precision.
What is the size of the atomic nucleus of helium-3? An international research team led by the Paul Scherrer…
#LehreAmPSI:
Werde Fachmann/-frau Reinigungstechnik EFZ
Du erlebst viel und der Beruf ist sehr abwechslungsreich. Mit deiner Arbeit trägst du unter anderem zum Werterhalt der Gebäude am PSI bei.
…
#LehreAmPSI:
Werde Fachmann/-frau Betriebsunterhalt EFZ
Du erbringst eine professionelle Dienstleistung, damit der Betrieb des PSI optimal funktioniert.
Willst Du mehr über diesen Beruf und…
Could neutral atoms be a means to scalable quantum computing?
Physicist Wenchao Xu and her team at PSI and ETH Zurich are exploring exactly that—using ultra-cold atoms trapped by tightly focused…
#LehreAmPSI:
Werde Fachmann/-frau Betreuung EFZ, Fachrichtung Kinder
Bei uns in der Kita Nanolino betreuen wir ca. 80 Kinder bis zum Schuleintritt.
Willst Du mehr über diesen Beruf und alle…
Zeolite breakthrough! Scientists have unlocked one of the secrets of a multi-purpose material that is found in everything from detergents to cat litter. 🧼🐱 For the first time, they have pinpointed…
#LehreAmPSI:
Werde Elektroniker/in EFZ
Jede Experimentiereinrichtung am PSI trägt dazu bei, neues Wissen zu schaffen. Modernste Werkstätten und elektronische Labors am PSI sind die Voraussetzung…
🔬 Diagnostics of the future – using an image of the cell: Researchers at the PSI Paul Scherrer Institute have collaborated with the Eric and Wendy Schmidt Center at the Broad Institute to develop an …
🎉 Congratulations to Nicolai Taufertshöfer, PhD student at the Laboratory for X-ray Nanoscience and Technologies (LXN) at PSI, for being awarded with distinction in the "Locations and Instruments"…
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Werde Elektroinstallateur/in EFZ
Ob modernste Werkstätten, weltweit einzigartige Hightech-Grossforschungsanlagen, medizinische Bestrahlungs- oder allgemeine Infrastruktur-Systeme,…
What do 🐌 snail shells and 🔩 hardened steel have in common? They are both made of millions and millions of tiny crystals! The strength of these materials depends on how these tiny crystals are…
🔬 Attosecond milestone at SwissFEL! But this time, it’s not about making the pulses — it’s about measuring them. Researchers at PSI have achieved a world record in X-ray pulse measurement —…
#LehreAmPSI:
Werde Automatiker/in EFZ
Jede Experimentiereinrichtung hilft mit, neue Erkenntnisse zu finden. Daher muss beim Bau immer wieder nach Lösungen gesucht werden. Modernste Werkstätten…
Excitement, curiosity, experiments – PSI was at tunBern.ch 2025!
From 30 April to 4 May, we had the opportunity to show children and young visitors how exciting science can be. With interactive…
Did you guess right? Emma is at the Alvra experimental station at the Swiss X-ray Free Electron Laser #SwissFEL! 💡
Here, she studies photobiology and photochemistry reactions that happen extremely…
#LehreAmPSI:
Werde Anlagen- und Apparatenbauer/in EFZ
Als Anlagen- und Apparatebauerin/Apparatebauer EFZ arbeitest du viel mit Hightech-Maschinen, dennoch ist oft auch dein handwerkliches…
Ferraris are outselling hydrogen cars – what that means for the energy transition
Despite decades of research and billions in investment, hydrogen cars remain a niche technology — in 2023, more…
Today is “Sexual Harassment Awareness Day" (SHAD) – a national action day for a harassment-free higher education and research environment.
Together with universities and other research institutes…
Guess where Emma Beale is! 🤔 She’s exploring one of our large research facilities… but can you figure out which one? Let us know your guesses in the comments and stay tuned for the reveal! 👀
Our …
#EnergyTransition - How do innovative ideas arise?
PSI researcher Michael Weinold has been investigating what led to the triumph of LED 💡 lamps.
His answer is “spillover effects”, innovative…
#5232, the magazine of the Paul Scherrer Institute, is out! ✨
In this issue, we present some of the most exciting developments in #advanced #manufacturing: from 3D printing and microchips with…
🔬 Important finding for hydrogen production! 💧⚡
Cobalt as a catalyst splits water better in alkaline conditions (pH > 7) than in acidic conditions. Why? PSI researchers discover: the catalyst…
PSI in numbers
2300
Employees at PSI are working on the world of tomorrow.
5
PSI operates five particle accelerator-based large research facilities.
64
In a total of 64 centres, labs and groups, we conduct research into pressing societal issues.
3000
Every year, around 3000 researchers from all over the world carry out experiments at our facilities.