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Scientific Highlights

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Datum
3 February 2022
How to get chloride ions into the cell

How to get chloride ions into the cell

A molecular movie shot at PSI reveals the mechanism of a light-driven chloride pump

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27 January 2022
Hillier et al

Muon spin spectroscopy

Muons are particles with a spin of 1⁄2 that can be implanted into a wide range of condensed matter materials to act as a local probe of the surrounding atomic environment. Measurement of the muon’s precession and relaxation provides an insight into how it interacts with its local environment. From this, unique information is obtained about the static and dynamic properties of the material of interest ...

 

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26 January 2022
Camila Bacellar wins EU XFEL Young Scientist Award

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.

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24 January 2022
retired nuclear Fuel Teaser

Taking good and safe care of the retired … nuclear fuel

After several years of loyal and reliable services during heavy duty operation in a reactor, nuclear fuel must be discharged and go into retirement. For Switzerland, the final place of retirement is planned to consist of a deep geological repository where the used nuclear fuel will be disposed. Before the repository is constructed, the used fuel will need to be stored in wet pools and/or dry storage casks.

During all this time, safe handling of the fuel will remain the top priority for operators and regulators. To gain better knowledge on the relevant phenomena which could potentially affect the fuel thermo-mechanics and safety characteristics during long storage periods as well as to allow predicting their evolution, simulation models are being developed at PSI within the DRYstars project.

A first milestone was recently achieved with the development of models coupled to state-of-the-art fuel performance codes for each of the three main categories of phenomena considered as having high safety relevance for storage, namely helium behaviour, creep behaviour and hydrogen behaviour.

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17 January 2022
Operando radiography

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.

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17 January 2022
25 years SINQ

Celebrating 25 years of SINQ

On January 17th, 2022, we celebrated the 25th anniversary of the inauguration of the Swiss Spallation Neutron Source SINQ. Today, SINQ is firmly embedded in the European research landscape and has established itself as an important center for neutron research.

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14 January 2022
Direct evidence of in situ Co-oxyhydroxide formation

Direct evidence of in situ Co-oxyhydroxide formation on the surface of La0.2Sr0.8CoO3-δ water splitting catalyst

We carried out in situ and ex situ ambient pressure X-ray photoelectron spectroscopy (APXPS) experiments on a La0.2Sr0.8CoO3-δ perovskite oxygen evolution reaction (OER) catalyst. The study shows that Sr is leached into the electrolyte after immersion, leading to surface Co active site enrichment. Such a Co-enriched surface evolves into a new phase during operation. With the help of theoretical simulations, such a species is assigned to Co-oxyhydroxide, providing direct evidence of its formation during the OER.

 

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11 January 2022
Revealing invisible defects in fusion reactor armor

Revealing invisible defects in fusion reactor armor

In an exciting collaboration, Nick Phillips, a PSI Fellow at the cSAXS beamline, reveals nanoscale lattice distortions created by invisible defects in fusion reactor armor. This work develops the current understanding of how the smallest, but most prevalent defects, generated during neutron irradiation behave. The novel Bragg ptychographic approach published in Nature Communications paves the way for fast, robust, 3D Bragg ptychography.

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11 January 2022
Figure 1: Schematic representation of different types of e-fuel production

E-fuels and electrification as complementary approaches to achieve climate target

Sustainable, synthetic fuels, so-called e-fuels, can help reduce CO₂ emissions. For their production, electricity from renewable sources is required in order to allow for a close to CO₂-neutral balance. The availability of electricity from renewable sources, which ensures the climate benefits of e-fuels, is currently still limited. “Especially in order to produce on a larger scale, a lot of renewable electricity is needed,” explains Christian Bauer, researcher at the Laboratory for Energy Systems Analysis (LEA) at PSI. 

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10 January 2022
Texture red gold

Understanding variant selection and texture in additively manufactured red-gold alloys

Synchrotron X-ray diffraction experiments reveal the presence of a non- negligible amount of tetragonal phase in 3D printed red-gold samples. 

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PSI Scientific Reports

Archive 2006-2012. The Scientific Reports – containing accounts of research topics from all the different areas – provide an impression of the variety of subjects researched at PSI.

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