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Scientific Highlights

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Datum
13 June 2023
SHL 13062023

Tender X-rays show how one of nature’s strongest bonds breaks

Short flashes of an unusual kind of X-ray light at SwissFEL and SLS bring scientists closer to developing better catalysts to transform the greenhouse gas methane into a less harmful chemical.

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9 June 2023
Fogh et al

Tuning magnetoelectricity in a mixed-anisotropy antiferromagnet

Control of magnetization and electric polarization is attractive in relation to tailoring materials for data storage and devices such as sensors or antennae. In magnetoelectric materials, these degrees of freedom are closely coupled, allowing polarization to be controlled by a magnetic field, and magnetization by an electric field, but the magnitude of the effect remains a challenge in the case of single-phase magnetoelectrics for applications. 

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7 June 2023
Mirror, mirror on the wall…

Mirror, mirror on the wall…

…. Now we know there are chiral phonons for sure

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7 June 2023
Gas Attenuators

A compact gas attenuator for the SwissFEL ATHOS beamline realized using additive manufacturing

Gas attenuators are important devices providing accurate variation of photon intensity for soft X-ray beamlines. In the SwissFEL ATHOS beamline front-end the space is very limited and an innovative approach has been taken to provide attenuation of three orders of magnitude up to an energy of 1200 eV. Additive manufacturing of a differential pumping system vacuum manifold allowed a triple pumping stage to be realized in a space of less than half a meter. Measurements have shown that the response of the device is as expected from theoretical calculations.

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25 May 2023
Two-dimensional slice obtained from the entire tomogram

Polymer electrolyte water electrolysis: Understanding the microstructure of a core-shell based anode catalyst layer

Reducing precious metal loading in the anodic catalyst layer (CL) is indispensable for lowering capital costs and enabling the widespread adoption of polymer electrolyte water electrolysis (PEWE). This work presents the first three-dimensional reconstruction of a TiO2-supported IrO2 based core shell catalyst layer, using high-resolution X-ray ptychographic tomography at cryogenic temperature of 90 K. The high data quality and phase sensitivity of the technique have allowed the reconstruction of all four phases namely pore space, IrO2, TiO2 support matrix and the ionomer network, the latter of which has proven to be a challenge in the past.

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25 May 2023
C_Wäckerlin

Dr Christian Wäckerlin is appointed as assistant professor at EPFL

Dr Christian Wäckerlin (*1983), currently Research and Teaching Associate at EPFL and Project Leader at the Paul Scherrer Institute (PSI), as Assistant Professor of Physics in the School of Basic Sciences. Christian Wäckerlin’s research focuses on nanoscience and quantum engineering.

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23 May 2023
Setup miniSLM at MicroXAS

A close look at temperature profiles during laser 3D printing

Operando X-ray diffraction was used to measure process zone temperatures in laser powder bed fusion and compared with finite element simulations.

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11 May 2023
Malgorzata Makowska, scientist at the MicroXAS beamline of the SLS, carefully positions a standard material for setup calibration on the sample manipulator in front of the X-ray beam.

X-rays look at nuclear fuel cladding with new detail

Micro-beam measurements at the Swiss Light Source SLS give insights into the crystal structure of hydrides that promote cracks in nuclear fuel cladding.

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10 May 2023
Laura Heyderman

Laura Heyderman elected Royal Society Fellow

Laura’s nomination recognises almost 30 years of research into magnetic materials and magnetism on the nanoscale.

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10 May 2023
Cement hydration on the micro- and nanoscale

A deep look into hydration of cement

Researchers led by the University of Málaga show the Portland cement early age hydration with microscopic detail and high contrast between the components. This knowledge may contribute to more environmentally friendly manufacturing processes.

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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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