The Bernina instrument at the SwissFEL Aramis hard X-ray free-electron laser is designed for studying ultrafast phenomena in condensed matter and material science. Ultrashort pulses from an optical laser system covering a large wavelength range can be used to generate specific non-equilibrium states, whose subsequent temporal evolution can be probed by selective X-ray scattering techniques in the range 2-12 keV. For that purpose, the X-ray beamline is equipped with optical elements which tailor the X-ray beam size and energy, as well as with pulse-to-pulse diagnostics that monitor the X-ray pulse intensity, position, as well as its spectral and temporal properties. The experiments can be performed using multiple interchangeable endstations differing in specialization, diffractometer and X-ray analyser configuration and load capacity for specialized sample environment. After testing the instrument in a series of pilot experiments in 2018, regular user operation begins in 2019.
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http://dx.doi.org/10.1107/S160057751900331X | DOI Listing |
J Am Chem Soc
December 2024
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
In pursuit of high- hydride superconductors, the molecular hydrides have attracted less attention because the hydrogen quasimolecules are usually inactive for superconductivity. Here, we report on the successful synthesis of a novel bismuth hydride superconductor 2/-BiH at pressures around 170-180 GPa. Its structure comprises bismuth atoms and elongated hydrogen molecules with a H-H bond length of 0.
View Article and Find Full Text PDFItal J Pediatr
December 2024
Pediatric Physical Medicine & Rehabilitation Service, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Background: The use of video games in rehabilitation settings is gaining increasing popularity. However, the lack of commercial video games suitable for children with disabilities and the disappointing user experience of serious games limit their applicability. The aim of this study was to assess the usability, acceptability and user experience of GiocAbile, an active video game for children with cerebral palsy (CP).
View Article and Find Full Text PDFNat Commun
December 2024
Department of Physics, Washington University in St. Louis, St. Louis, MO, 63130, USA.
J Phys Condens Matter
December 2024
Department of Physics, IIT Jodhpur, NH 62, Karwar, Jodhpur, Jodhpur, Rajasthan, 342011, INDIA.
The industrialization has severely impacted the ecosystem because of intensive use of chemicals and gases, causing the undesired outcomes such as hazardous gases, e.g., carbon monoxide (CO), nitrox oxide (NOx), ammonia (NH3), hydrogen (H2), hydrogen sulfide (H2S) and even volatile organic compounds.
View Article and Find Full Text PDFJ Phys Condens Matter
December 2024
Institut fuer Wissenschaftliches Rechenen, Technische Universitaet Dresden, 01062 Dresden, Dresden, 01062, GERMANY.
The coarsening dynamics at late times in phase-separating systems lead to universally hyperuniform patterns. This is well known for scalar field theories, such as the Cahn-Hilliard equation, but has also been shown for dry scalar active field theories. We demonstrate the role of hydrodynamic interactions in influencing hyperuniformity in a wet active system described by active model H.
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