News and Research Highlights

Latest announcements about Photon Science at DESY as well as important research or technical news can be found here:

13 November 2019 · Research Highlight

Study at FLASH - Polarization-sensitive reconstruction of THz fields at dielectric interfaces

The unique FLASH THz facility is worldwide leading in providing tunable narrowband Terahertz (THz) pulses with an intrinsic synchronisation to soft X-ray pulses. These THz pulses are continuously tunable in the range of 10300μm (4-125 meV) and the energy per pulse is in the ...

07 November 2019

Helmholtz Doctoral Award for Yi-Jen Chen

Yi-Jen Chen from DESY Photon Science has been awarded the Helmholtz Association's Doctoral Prize in the research area Matter for her outstanding doctoral thesis in the discipline of ultrafast physics. In her dissertation, Chen succeeded in explaining experimental findings in the attosecond range on the behaviour of electron clouds in strong laser light. An attosecond is a quintillionth of a second, ...

05 November 2019

Francesca Calegari elected 2020 Fellow of the Optical Society

DESY Lead Scientist and Professor at Universität Hamburg Francesca Calegari has been elected a Fellow of the Optical Society (OSA). She is recognized “for her major contributions to attosecond science,” as the society announced. With 21 000 members in more than 100 countries, the Optical Society is the leading scientific society in the field of optics and photonics.

15 October 2019 · Research Highlight

PETRA III shows possible route to new rocket fuels

High-energy materials that can store very large amounts of chemical energy and release it when required are being sought for long- haul space travel worldwide. Nitrogen compounds in which several nitrogen atoms are linked by single bonds possess this ability. These compounds are difficult to synthesize because they are highly unstable. At DESY's X-ray light source PETRA III, scientists from the ...

24 September 2019 · Research Highlight

How molecular footballs burst in an X-ray laser beam

An international research team has observed in real time how football molecules made of carbon atoms burst in the beam of an X-ray laser. The study shows the temporal course of the bursting process, which takes less than a trillionth of a second, and is important for the analysis of sensitive proteins and other biomolecules, which are also frequently studied using bright X-ray laser flashes. The football ...

20 September 2019

Scientific symposium in memory of Wilfried Wurth

On Friday, friends and colleagues of Prof. Dr. Wilfried L. Wurth paid him their last respects at a memorial symposium held at the Center for Free-Electron Laser Science CFEL. The lead scientist at DESY and professor at the University of Hamburg passed away unexpectedly this spring. With deep personal sympathy, his fellow scientists from home and abroad recalled Wilfried Wurth’s exceptional character ...

03 September 2019

Freigeist Fellowship for Daria Gorelova

The Volkswagen Foundation has awarded Daria Gorelova from the DESY Photon Science division a Freigeist Fellowship. At the Center for Free-Electron Laser Science (CFEL) at DESY, Daria Gorelova is currently working on ultrafast processes in solids and molecules. In particular, she uses quantum mechanical methods to investigate the characterisation possibilities of these processes with the special X-ray ...

28 August 2019 · Research Highlight

First high-speed hard X-ray microscopic movies at a free-electron laser

A group of researchers, also from DESY and other insitutions, has for the first time performed high-speed microscopy using an X-ray laser at the European XFEL. The team produced a super slow-motion movie of a bursting glass capillary with micrometre spatial resolution. The method allows for observations of processes that take place at speeds up to a few kilometres per second, paving the way for 3D ...

20 August 2019 · Research Highlight

FLASH coaxes superfluorescent emission from the noble gas xenon

Scientists have for the first time induced superfluorescence in the extreme ultraviolet range. Superfluorescence, or superradiance, could be used to build a laser that does not require an optical resonator. The team headed by DESY’s lead scientist Nina Rohringer used DESY’s free-electron laser FLASH to stimulate ...

29 July 2019 · Research Highlight

Quantum movie displays probability density distribution of rotating carbonyl sulphide molecules

A team of scientists, also from DESY, have used precisely tuned pulses of laser light to film the ultrafast rotation of a molecule. The resulting “molecular movie” tracks one and a half revolutions of carbonyl sulphide (OCS) – a rod-shaped molecule consisting of one oxygen, one carbon and one sulphur atom – taking place within 125 trillionths of a second, at a high temporal and ...

11 July 2019 · Research Highlight

Coupled terahertz device significantly improves electron beam quality

Scientists at DESY have achieved a new world record for an experimental type of miniature particle accelerator: For the first time, a terahertz powered accelerator more than doubled the energy of the injected electrons. At the same time, the setup significantly improved the electron beam quality compared to earlier experiments with the technique, as Dongfang Zhang and his colleagues from the Center for ...

09 July 2019 · Research Highlight

Spraying nanopaper

With a new spray coating process, investigated at PETRA III, very uniform layers of cellulose nanofibers (CNF) can be produced on an industrial scale. X-ray measurements at DESY's light source, as well as investigations with an atomic force microscope and neutron scattering show how the layer is structured and can be ...

05 July 2019 · Research Highlight

Extremely hard yet metallically conductive

An international research group led by scientists from the University of Bayreuth has identified at PETRA III a previously unknown material: Rhenium nitride pernitride. Thanks to a combination of properties that were previously considered incompatible, it looks set to become highly attractive for technological applications. ...

25 June 2019 · Research Highlight

X-ray investigation reveals beryllium configuration with five and six neighbouring oxygen atoms for the first time

In high-pressure experiments at DESY's X-ray light source PETRA III, scientists have observed a unique configuration of beryllium for the first time: At pressures nearly a million times the average atmospheric pressure, beryllium in a phosphate crystal acquires six neighbouring atoms instead of the usual four. This ...

24 June 2019 · Research Highlight

New device squeezes samples with 1.6 billion atmospheres per second

A new super-fast high-pressure device at DESY's X-ray light source PETRA III allows scientists to simulate and study earthquakes and meteorite impacts more realistically in the lab. The new-generation dynamic diamond anvil cell (dDAC), developed by scientists from Lawrence Livermore National Laboratory (LLNL), DESY, the European Synchrotron Radiation Source ESRF, and the universities of Oxford, ...

13 June 2019 · Research Highlight

Laser trick produces high-energy terahertz pulses

A team of scientists from DESY and the University of Hamburg has achieved an important milestone in the quest for a new type of compact particle accelerator. Using ultra-powerful pulses of laser light, they were able to produce particularly high-energy flashes of radiation in the terahertz range having a sharply defined wavelength (colour). Terahertz radiation is to open the way for a new generation of ...

24 May 2019 · Research Highlight

X-rays show self-organisation of nanocrystals live

Using X-rays, a DESY research team has watched live how nanocrystals organise themselves into a highly ordered layer. The study helps to better understand the self-organisation of nanoparticles, which is important for many technical applications, for example in electronics and optoelectronics, as the scientists write in the journal Small.

10 May 2019 · Research Highlight

Spin waves from a microcrystal

An international team of scientists from the Max Planck Institute for Solid State Research, DESY, University of Stuttgart, Pohang University of Science and Technology POSTECH (South Korea) and the University of Tokyo (Japan) has determined the spectrum of collective magnetic excitations (“spin waves”) in a ruthenium-oxide antiferromagnet, which exhibits an unusually high ...

10 May 2019

DESY mourns the loss of Wilfried Wurth

DESY mourns the loss of one of its pioneers in research at free-electron lasers: Prof. Wilfried Wurth, leading scientist of the free-electron laser FLASH and lead scientist at DESY, died suddenly and unexpectedly at the age of 62.

“Wilfried Wurth’s sudden death hit us all very hard. We are losing an excellent scientist and a very esteemed and popular colleague,” says ...

09 May 2019 · Research Highlight

Nanometre gaps can crystallise liquids

Very narrow gaps make liquids crystallise partially. X-ray investigations at PETRA III show that in gaps just a few molecule diameters wide both, liquid and crystal properties of a material can exist at the same time. The observation of this coexistence is important for all liquids in very small cavities and thus also for the study of friction (tribology). The team led by DESY researchers Milena Lippmann ...

26 April 2019 · Research Highlight

Flexible circuits for 3D printing

A research cooperation between the University of Hamburg and DESY has developed a process suitable for 3D printing that can be used to produce transparent and mechanically flexible electronic circuits. The electronics consists of a mesh of silver nanowires that can be printed in suspension and embedded in various flexible and transparent plastics (polymers). This technology can enable new applications ...

02 April 2019 · Research Highlight

Exotic properties of iridium compounds

Scientists at DESY’s X-ray source PETRA III and the London Centre for Nanotechnology, at University College London, have developed a new method for examining the astonishing properties of a special class of iridium oxides known as iridates. The team of principal author Pavel Alexeev, from the Dynamics Beamline P01 at PETRA III, is presenting the procedure ...

02 April 2019 · Research Highlight

New method for imaging electronic orbitals in solids - Study at PETRA III

Orbital states are quantum mechanical constructions that describe the probability to find an electron in an atom, molecule or solid.  We know from atomic physics that an s-orbital is spherical or that a p-orbital is dumbbell-shaped, but how do the complicated distributions of the electrons that contribute to chemical bonds in solids look like? ...

29 March 2019 · Research Highlight

How virtual photons alter atomic X-ray spectra

Certain X-ray optical properties of metal atoms can be controlled with the help of virtual photons. This has been demonstrated for the first time by a DESY research team at PETRA III, by using the highly brilliant radiation from this X-ray light source at DESY. In the journal Physical Review Letters they report on how the X-ray spectra of metal atoms can be controlled by virtual photons. This ...

22 March 2019 · Research Highlight

The taming of the light screw

Scientists from DESY, the MPSD, the University of Hamburg and the CUI Cluster of Excellence create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.

20 March 2019 · Research Highlight

Researchers generate the shortest ultraviolet laser pulse ever

Researchers at CFEL at DESY have generated a 1.9-femtosecond ultraviolet laser light pulse - setting a record for ultraviolet (UV) laser pulses with the shortest duration. The experiments, published in the recent issue of the scientific journal Optics Letters, outshine the previous record of 2.8 femtoseconds, set in 2010.

The 1.9-femtosecond pulse (1 femtosecond is a millionth of ...

15 March 2019 · Research Highlight

Scientists go to extremes to reveal make-up of Earth’s core

Experiments conducted at extreme conditions, also at PETRA III at DESY, are giving scientists new insights into the chemical make-up of the Earth’s core. Advanced laboratory techniques reveal that our planet’s metal centre – more than 1,800 miles below the surface – also contains silicon, an ...

08 March 2019

More than 100 participants at the DESY Research Course 2019

The programme of the DESY Research Course 2019 “Trends in Modern Photon Science” covered the research activities of different new photon science research acitivities on the campus in Hamburg-Bahrenfeld. More than 100 participants attended this year's course from 27 February to 1 March. It was the 18th research course at DESY of a series initiated in the year ...

04 March 2019 · Research Highlight

Scientists develop printable water sensor

A new, versatile plastic-composite sensor can detect tiny amounts of water. The 3d printable material, developed by a Spanish-Israeli team of scientists and studied at PETRA III, is cheap, flexible and non-toxic and changes its colour from purple to blue in wet conditions. The researchers lead by Pilar Amo-Ochoa from the Autonomous University of Madrid (UAM) used DESY’s X-ray light source to ...

11 February 2019 · Research Highlight

Innovative method enables new view into Earth's interior

An innovative X-ray method enables new high-pressure investigations of samples under deep mantle conditions. The technique, which was developed by a team led by Georg Spiekermann from DESY, the German Research Centre for Geosciences GFZ and the University of Potsdam, extends the range of instruments available to high-pressure researchers. Successful tests of the new method at DESY's X-ray light source ...

04 February 2019 · Research Highlight

What keeps spiders on the ceiling?

Hunting spiders easily climb vertical surfaces or move upside down on the ceiling. A thousand tiny hairs at the ends of their legs make sure they do not fall off. Like the spider’s exoskeleton, these bristle-like hairs (so-called setae) mainly consist of proteins and chitin, which is a polysaccharide. To find out more about their fine structure, an interdisciplinary research team from the Biology ...

01 February 2019 · Research Highlight

X-rays reveal layout of loaded drug transporter

Experiments at DESY's X-ray source PETRA III have revealed the first structure of a biological transporter protein loaded with a pro-drug. Prodrugs are inactive medications that are metabolized into an active, functional form within the body. They can hijack the human nutrient transporter proteins PepT1 or PepT2 that are located in the cell membrane and usually channel peptides derived from digested ...

31 January 2019 · Research Highlight

Simulating meteorite impacts in the lab

A US-German research team has simulated meteorite impacts in the lab and followed the resulting structural changes in two feldspar minerals with X-rays as they happened. The results of the experiments at DESY and at Argonne National Laboratory in the US show that structural changes can occur at very different pressures, depending on the compression rate. The findings, published in the 1 February issue of ...

24 January 2019 · Research Highlight

Platinum forms Nano-Bubbles

Platinum, a noble metal, is oxidised more quickly than expected under conditions that are technologically relevant. This has emerged from a study jointly conducted by the DESY NanoLab and the Vienna University of Technology. Devices that contain platinum, such as the catalytic converters used to reduce exhaust emissions in cars, can suffer a loss in efficacy as a result of this reaction. The team around ...

23 January 2019

International user community of light sources meets in Hamburg

From Wednesday on, around 1100 leading X-ray researchers and nanoscientists from 30 nations will meet in Hamburg. The participants belong to the large circle of users of the DESY X-ray light sources PETRA III and FLASH as well as the European XFEL X-ray laser opened in 2017, and they will discuss new results, investigation possibilities, and the further development of the research light sources. In recent ...

16 January 2019

X-ray experiments reveal important mechanism behind parkinsonian disorders

A new X-ray study has revealed one of the key mechanisms behind certain familial-parkinsonian disorders. The study demonstrates in detail how poisoning with the metal manganese occurs inside a cell, leading to parkinsonian symptoms. It found that a specific genetic defect results in manganese accumulating in the cell’s so-called Golgi apparatus. This has been demonstrated in experiments at DESY as ...