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Unprecedented view of a single catalyst nanoparticle at work

X-rays reveal compositional changes on active surface under reaction conditions

05-Oct-2021

A DESY-led research team has been using high-intensity X-rays to observe a single catalyst nanoparticle at work. The experiment has revealed for the first time how the chemical composition of the surface of an individual nanoparticle changes under reaction conditions, making it more active. The ...

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X-ray insights may enable better plastics production

Analysis helps to understand fragmentation of catalyst particles in ethylene polymerisation

30-Sep-2021

An X-ray study at DESY is pointing the way towards a better understanding of plastics production. A team led by Utrecht University investigated so-called Ziegler-type catalysts, the workhorses in the world's polyethylene and polypropylene production, at DESY's X-ray source PETRA III. As the ...

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Filming antibiotic resistance in Slow-Motion

X-ray laser European XFEL captures rapid reaction of bacterial enzyme

30-Sep-2021

Using the X-ray laser European XFEL an international team of researchers, including scientists from DESY, has successfully filmed a reaction step that is important for the development of antibiotic resistance. The molecular film captures the very rapid reaction of the enzyme beta-lactamase from ...

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Table-top electron camera catches ultrafast dynamics of matter

DESY team demonstrates first Terahertz enhanced electron diffractometer

19-Aug-2021

Scientists at DESY have built a compact electron camera that can capture the inner, ultrafast dynamics of matter. The system shoots short bunches of electrons at a sample to take snapshots of its current inner structure and is the first such electron diffractometer that uses Terahertz radiation ...

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Unexpected twist of catalytic nanoparticles

Precise orientation affects shape, size and behaviour

16-Aug-2021

Nanoparticles that make up catalysts can arrange themselves in slightly different ways, and behave significantly differently as a result. This is revealed by an X-ray study of palladium nanoparticles carried out at DESY Nanolab and PETRA III. The study has been published in the journal ACS Nano ...

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Astonishing diversity: Semiconductor nanoparticles form numerous structures

X-ray study reveals how lead sulphide particles self-organise in real time

13-Aug-2021

The structure adopted by lead sulphide nanoparticles changes surprisingly often as they assemble to form ordered superlattices. This is revealed by an experimental study that has been conducted at DESY’s X-ray source PETRA III. A team led by the DESY scientists Irina Lokteva and Felix Lehmkühler, ...

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DESY X-ray lightsource identifies promising candidates for COVID drugs

Existing active substances bind to key virus protein

07-Apr-2021

A team of researchers has identified several candidates for drugs against the coronavirus SARS-CoV-2 at DESY´s high-brilliance X-ray lightsource PETRA III. They bind to an important protein of the virus and could thus be the basis for a drug against Covid-19. In a so-called X-ray screening, the ...

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Bacteria needle under the electron microscope

Researchers watch injectisome of gram-negative bacteria in action for the first time

15-Mar-2021

For the first time, researchers have revealed the syringe-like type-III secretion system of Gram-negative bacteria in action. In the research study, published in Nature Communications, the group of Thomas Marlovits from the Centre for Structural Systems Biology (CSSB) at the DESY campus provides ...

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Researchers watch nanomaterials growing in real time

New world record in the temporal resolution achieved using GISAXS, a surface-sensitive scattering technique

17-Feb-2021

For the first time, a team of scientists has succeeded in capturing in real time the first few milliseconds in the life of a gold coating as it forms on a polymer. The team used DESY’s high-brilliance X-ray source PETRA III to observe the earliest stages in the growth of a metal-polymer hybrid ...

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Exploding water jet in X-ray beam

X-ray laser sheds light on ultrafast processes in physics, biology and material sciences

05-Jan-2021

An interdisciplinary team of scientists has used ultrashort X-ray pulses to image extremely rapidly exploding jets of water. The experiments, carried out at the European X-ray laser facility European XFEL, aim to study ultrafast events that occur in a very small region by means of X-ray ...

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