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Laboratory for X-ray Nanoscience and Technologies (LXN)

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Detectors Scientific Highlights

15 avril 2021
teaser

Hindering the magnetic dead layer in manganites

The authors demonstrate the stability of ferromagnetic order of one unit cell thick optimally doped manganite (La0.7Ba0.3MnO3, LBMO) epitaxially grown between two layers of SrRuO3 (SRO). LBMO shows ferromagnetism even above SRO Tc. Density Functional Theory calculations help understand the reasons behind this interesting result.

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11 mai 2020
Cover Materials Today

Operando X-ray diffraction during laser 3D printing

Ultra-fast operando X-ray diffraction experiments reveal the temporal evolution of low and high temperature phases and the formation of residual stresses during laser 3D printing of a Ti-6Al-4V alloy. The profound influence of the length of the laser-scanning vector  on the evolving microstructure is revealed and elucidated.  

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18 février 2020
Innovation Award on Synchrotron Radiation 2019 for the development of XFEL detectors using the adaptive gain principle

Innovation Award on Synchrotron Radiation 2019 for the development of XFEL detectors using the adaptive gain principle

The Innovation Award on Synchrotron Radiation 2019 was given to the researchers Prof. Heinz Graafsma from Desy and Dr. Aldo Mozzanica and Dr. Bernd Schmitt both from the Paul Scherrer Institute. The three physicists were honored for their contributions to the development of detectors for XFEL applications based on the dynamic gain switching principle enabling simultaneously single photon resolution and a large dynamic range. The laudation was held by Prof. Edgar Weckert from Desy. The Synchrotron Radiation Innovation Award is sponsored by SPECS GmbH and BESTEC GmbH.

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7 octobre 2019
laminography chip

3D imaging for planar samples with zooming

Researchers of the Paul Scherrer Institut have previously generated 3-D images of a commercially available computer chip. This was achieved using a high-resolution tomography method. Now they extended their imaging approach to a so-called laminography geometry to remove the requirement of preparing isolated samples, also enabling imaging at various magnification. For ptychographic X-ray laminography (PyXL) a new instrument was developed and built, and new data reconstruction algorithms were implemented to align the projections and reconstruct a 3D dataset. The new capabilities were demonstrated by imaging a 16 nm FinFET integrated circuit at 18.9 nm 3D resolution at the Swiss Light Source. The results are reported in the latest edition of the journal Nature Electronics. The imaging technique is not limited to integrated circuits, but can be used for high-resolution 3D imaging of flat extended samples. Thus the researchers start now to exploit other areas of science ranging from biology to magnetism.

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1 février 2019

Une lentille virtuelle améliore la microscopie à rayons X

Communiqués de presse Technologies d’avenir Recherche avec la lumière synchrotron

Une nouvelle méthode développée par des chercheurs du PSI permet d’améliorer encore les radiographies de matériaux. Pour ce faire, les chercheurs ont déplacé une lentille optique et réalisé chaque fois une image individuelle. A partir de là, ils ont calculé une image globale à l’aide d’algorithmes informatiques.

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17 décembre 2018

First femtosecond protein pump-probe measurements at SwissFEL

A major milestone in the commissioning of SwissFEL has been reached: the first pump-probe experiments on proteins have been successfully carried out. Crystals of several retinal-binding proteins were delivered in a viscous jet system and a femtosecond laser was used to start the isomerization reaction. Microsecond to sub-picosecond snapshots were then collected, catching the retinal proteins shortly after isomerization of the chromophore.

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12 novembre 2018
Picture3.jpg

A crystal-clear picture

Fast and accurate data collection for macromolecular crystallography using the JUNGFRAU detector.

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12 août 2018

First serial femtosecond crystallography (SFX) pilot user experiment at SwissFEL

On the 7th to 12th of August 2018, a collaborative group of scientists from the Paul Scherrer Institute and members of the LeadXpro and Heptares pharmaceutical companies led by Karol Nass (PSI macromolecular crystallography MX-SLS group) performed the first serial femtosecond crystallography (SFX) pilot user experiment at the SwissFEL X-ray free electron laser (XFEL).

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20 octobre 2016
JF.png

First protein structure solved using the JUNGFRAU detector!

JUNGFRAU is a charge-integrating, two-dimensional pixel detector developed at the Paul Scherrer Institut for use at free-electron lasers, in particular SwissFEL, and synchrotron light sources. On the 10th October, the first protein crystallography experiment using the JUNGFRAU detector, was performed at the beamline X06SA (PXI) of the Swiss Light Source by the members of the Protein Crystallography and Detectors groups at PSI.

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30 juin 2016
A_P_gotthard.png

Single shot grating interferometry demonstrated using direct conversion detection

Researchers at the Paul Scherrer Institute's Swiss Light Source in Villigen, Switzerland, have developed an X-ray grating interferometry setup which does not require an analyzer grating, by directly detecting the fringes generated by the phase grating with a high resolution detector. The 25um pitch GOTTHARD microstrip detector utilizes a direct conversion sensor in which the charge generated from a single absorbed photon is collected by more than one channel. Therefore it is possible to interpolate to achieve a position resolution finer than the strip pitch.

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6 août 2014

Fast scanning coherent X-ray imaging using Eiger

The smaller pixel size, high frame rate, and high dynamic range of next-generation photon counting pixel detectors expedites measurements based on coherent diffractive imaging (CDI). The latter comprises methods that exploit the coherence of X-ray synchrotron sources to replace imaging optics by reconstruction algorithms. Researchers from the Paul Scherrer Institut have recently demonstrated fast CDI image acquisition above 25,000 resolution elements per second using an in-house developed Eiger detector. This rate is state of the art for diffractive imaging and even on a par with the fastest scanning X-ray transmission instruments. High image throughput is of crucial importance for both materials and biological sciences for studies with representative population sampling.

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Contact

Dr. Bernd Schmitt
Group Leader Detector Engineering
Paul Scherrer Institut
5232 Villigen-PSI
Switzerland

Telephone: +41 56 310 2314
E-mail: bernd.schmitt@psi.ch


Dr. Anna Bergamaschi
Group Leader Detector Science and Characterization
Paul Scherrer Institute
Forschungsstrasse 111
5232 Villigen PSI
Switzerland

Telephone: +41 56 310 32 27
E-mail: anna.bergamaschi@psi.ch

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