International research at BESSY II continued even in the corona year 2021
In 2021, our users at BESSY II came from 34 countries. © HZB
2021 was not an easy year for international research: owing to lockdowns and travel bans, science was hit hard by the pandemic situation. Nevertheless, experiments continued at a high level at the BESSY II light source in Berlin Adlershof – thanks in part to new remote service offers. Here are the figures at a glance.
“It makes us happy that BESSY II was dependably available to researchers for around 6000 hours despite the difficult conditions,” says Dr. Antje Vollmer, Head of User Coordination at HZB. The light generated at BESSY II is directed through 25 beamlines to 37 experimental stations. Thus, altogether, light was available for nearly 150,000 hours of research at all the beamlines. This light is used for experiments in many fields, including physics, chemistry and the life sciences.
47 percent of user groups from abroad
As was to be expected, given that travel had to be limited, COVID-19 left a dip in user visits in 2021. “We counted just under 1400 visits from users last year. What surprised us, in view of the tense situation, was that 30 percent of the user groups came from other European countries and 17 percent were from non-European countries,” reports Antje Vollmer. “In total, we had user groups from 34 countries, which is an astonishing number.”
The fact that researchers from abroad conducted their experiments at BESSY II even in the corona year 2021 underlines the attractiveness of the photon source and the experimental stations, some of which are unique worldwide. “It also shows that the users here are very well looked after by dedicated scientists at the experimental stations and are happy to come back.”
New remote services at BESSY II
To ensure that research could continue despite the travel bans, new remote services were offered at many experimental stations. Users submitted samples and took part in their experiments virtually. “Our beamline supervisors organised this service at very short notice to ensure that socially relevant research could continue wherever possible,” says Vollmer. A total of 27 percent of all experiments were conducted remotely or with remote participation.
The figures at a glance
- 1400 visiting user groups from 34 countries
- 67 percent of measurement time for external research projects
- 30 percent of user groups from other European countries
- 17 percent of user groups from non-European countries
- 6000 hours available for research at BESSY II
- 37 experimental stations provided with light (via 25 beamlines)
Altmetric highlights at BESSY II
Altmetric measures the attention that scientific publications attract on the Internet. It counts how many times the online link (doi) to a specialist publication is posted on Twitter, Reddit, Mendeley, blogs and forums. For topics in physics, an Altmetric score above 100 is considered unusual.
The three BESSY-related short news items that got the highest Altmetric scores (2021) are:
- DESY X-ray lightsource identifies promising candidates for COVID drugs, Data from the Macromolecular Crystallography team at BESSY II, Altmetric score: 542, Science - Link to paper
- Water as a metal - detected at BESSY II , In-house research at BESSY II, Altmetric score: 509, Nature -Link to paper
- World’s first video recording of a space-time crystal, Work of a Max Planck Society group at BESSY II, Altmetric score: 314, Physical Review Letters - Link to paper
- BESSY II: How intrinsic oxygen shortens the lifespan of solid-state batteriesAlthough solid-state batteries (SSBs) demonstrate high performance and are intrinsically safe, their capacity currently declines rapidly. A team from the TU Wien, Humboldt-University Berlin and HZB has now analysed a TiS₂|Li₃YCl₆ solid-state half-cell in operando at BESSY II using a special sample environment that allows for non-destructive investigation under real operating conditions. Data obtained by combination of soft and hard X-ray photoelectron spectroscopy (XPS and HAXPES) revealed a new degradation mechanism that had not previously been identified in solid-state batteries. They have gained some surprising insights, particularly regarding the harmful role played by intrinsic oxygen. This study provides valuable information for improving design and handling of such batteries.
- Spintronics at BESSY II: Real-time analysis of magnetic bilayer systemsSpintronic devices enable data processing with significantly lower energy consumption. They are based on the interaction between ferromagnetic and antiferromagnetic layers. Now, a team from Freie Universität Berlin, HZB and Uppsala University has succeeded in tracking, for each layer separately, how the magnetic order changes after a short laser pulse has excited the system. They were also able to identify the main cause of the loss of antiferromagnetic order in the oxide layer: the excitation is transported from the hot electrons in the ferromagnetic metal to the spins in the antiferromagnet.
- Environmental Chemistry at BESSY II: Radicals in waterwaysHow do radicals form in aqueous solutions when exposed to UV light? This question is important for health research and environmental protection, for example with regard to the overfertilisation of water bodies by intensive agriculture. A team at BESSY II has now developed a new method of investigating hydroxyl radicals in solution. By using a clever trick, the scientists gained surprising insights into the reaction pathway.