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
- Only at BESSY II worldwide: IR nanoscopy at very long THz wavelengthsThe team at the IRIS beamline at BESSY II has created a new experimental option: They achieved infrared nanoscopy with a spatial resolution of around 50 nm at very long THz wavelengths. This was possible thanks to a temporal pattern of light pulses known as the low-alpha operating mode at BESSY II. Worldwide, BESSY II is the only synchrotron light source at which users could perform nanoscopy in a single setup from 25 to 4000 cm-1, a unique opportunity for ultra-broadband characterisation of complex materials at the nanoscale in both the life sciences and materials sciences.
- Ultrafast demagnetisation - Thinner iron, stronger effectThe thinner an iron film, the more easily it can be demagnetised by a laser pulse. Researchers at the University of Duisburg-Essen, working with Helmholtz-Zentrum Berlin and other partners, have discovered why: the key lies in the magnetic order at the material's interfaces. In the long term, these findings could contribute to the development of new technologies for magnetic data storage. The results have been published in the scientific journal Advanced Science.
- Spin waves inside a nano-oscillator imaged for the first timeFor the first time, researchers have directly imaged the magnetisation dynamics inside a spin Hall nano-oscillator — a nanoscale device that converts direct current into tunable microwave signals and is a promising building block for energy-efficient wireless communication and brain-inspired computing. A Swedish–German team led by the University of Gothenburg and Helmholtz-Zentrum Berlin (HZB) achieved this using time-resolved scanning transmission X-ray microscopy at the MAXYMUS instrument at BESSY II. The results, now published in Advanced Materials, reveal spin-wave features that had escaped previous, indirect measurement techniques.