Coherent X-ray Scattering Group (CXS)

The Coherent X-ray Scattering (CXS) group develops techniques in scanning- and time-resolved SAXS and high-resolution scanning X-ray microscopy at the cSAXS beamline. In collaboration with research groups, within PSI and international universities and research institutes, we apply these techniques to a wide range of problems in the fields of biology, biomedical research and materials science.

We have an open position at cSAXS for fluorescence tomography in combination with ptychographic tomography, click here for details.

Scientific Highlights 2018

3 April 2018

Klaus poster 3.jpg

HERCULES School Poster Prize

Klaus Wakonig was awarded the best poster prize in the 2018 rendition of the HERCULES European School in Grenoble, France. Klaus is currently a PhD student at the CXS group at PSI, developing X-ray Fourier ptychography.

Scientific Highlights 2017

5 December 2017


2018 Richard L. Greene Dissertation Award

Claire Donnelly (LMX group) has been awarded the 2018 Richard L. Greene Dissertation Award in Experimental Condensed Matter or Materials Physics from the American Physical Society, recognizing doctoral thesis research of exceptional quality and importance. This prize is for her dissertation on “Hard X-ray Tomgraphy of Three Dimensional Magnetic Structures.” Claire carried out her dissertation in collaboration with the CXS group and the OMNY project, with experiments at the cSAXS beamline in SLS.

17 October 2017

SLS Teaser.jpg

Making the world go round - a look into the structure of a prominent heterogeneous catalyst

Fluid catalytic cracking catalysts are composite particles of hierarchical porosity were examined using ptychographic X-ray tomography. These particles are essential to the conversion of crude oil into gasoline. Examination of catalysts at decreasing levels of catalytic conversion efficacy allowed the detection of possible deactivation causes.

28 August 2017

prize viviane crop.jpg

Swiss Neutron Scattering Prize

Viviane Lutz-Bueno was awarded the Swiss Neutron Scattering Prize of the Swiss Neutron Scattering Society, at the Joint Annual Meeting of the Swiss and Austrian Physical Society, for her PhD thesis Effects of formulation and flow on the structure of micellar aggregates carried out at ETH Zürich. Viviane is currently a postdoctoral fellow at the CXS group at PSI, developing scanning SAXS analysis methods.

20 July 2017

teaser picture

Diving into magnets

Media Releases Materials Research Matter and Material Research Using Synchrotron Light

For the first time, scientists have made visible the directions of the magnetisation inside a 3D magnetic object. The smallest details in their visualisation were ten thousand times smaller than a millimetre. Among others, the magnetic structure contained one outstanding kind of pattern: magnetic singularities called Bloch points, which up to now were only known in theory.

22 June 2017


Photonic structure of white beetle wing scales: optimized by evolution

A very thin layer on this beetle’s wings exhibits a complicated structure on the nanoscale that gives them a bright white color. X-ray nanotomography acquired at the Swiss Light Source provides a faithful image of this structure in three dimensions with which scientists can confirm its evolutionary optimization: just enough material for an efficient reflection of white light.

23 March 2017

poster prize klaus crop.jpg

European NESY Winterschool Young Scientist Best Poster Prize

Klaus Wakonig was awarded the "Young Scientist Best Poster Prize" along with a cash prize at the 10th European NESY Winterschool & Symposium on Neutron and Synchrotron Radiation. Klaus is a PhD student at the coherent X-ray scattering group (CXS) in PSI. His poster, entitled "X-ray Fourier ptychography," details his latest results in the implementation of Fourier ptychography at X-ray wavelengths for nanoimaging. Image credit ©NESY/Montanuniversitaet Leoben

16 March 2017

teaser picture

3-D X-ray imaging makes the finest details of a computer chip visible

Media Releases Materials Research Micro- and Nanotechnology Matter and Material Research Using Synchrotron Light

Researchers at the PSI have made detailed 3-D X-ray images of a commercially available computer chip. In their experiment, they examined a small piece that they had cut out of the chip beforehand. This sample remained undamaged throughout the measurement. It is a major challenge for manufacturers to determine if, in the end, the structure of their chips conforms to the specifications. Thus these results represent one important application of an X-ray tomography method that the PSI researchers have been developing for several years.

9 March 2017

focal spot teaser.jpg

Interlaced zone plates push the resolution limit in x-ray microscopy

A novel type of diffractive lenses based on interlaced structures enable x-ray imaging at resolutions below 10 nm. The fabrication method and the test results of these novel x-ray lenses have been published in the journal Scientific Reports.