Documents in process

High-throughput X-ray diffraction (XRD) techniques are revolutionizing materials science by enabling the rapid collection ofhundreds or thousands of diffraction patterns in a single experiment. However, traditional analytical methods like Rietveld refinementbecome a significant bottleneck for quantifying phase fractions from such large datasets, due to their time-consuming,expert-driven nature. [...]

Understanding the nature of active sites in heterogeneous catalysts and how to create them purposefully opens up the possibility of tailored catalyst design. Here we report mixed-valence subnanometre CoOx clusters, consisting of a few metallic Co⁰ atoms on top of Co²⁺, bound to a silicalite-1 support through lattice oxygen atoms as active species for non-oxidative propane dehydrogenation (PDH) to propene. [...]

Investigating materials under extreme pressure using diamond anvil cells (DACs) requires very small samples. X-ray diffraction studies of such samples therefore require beams focused to <5 μm. [...]

Polaritonic chemistry has been emerging as a powerful and fundamental paradigm in materials science, offering unconventional ways to manipulate molecular and material properties by engineering light–matter interactions. By hybridizing molecular excitations with confined electromagnetic fields to form polaritonic states, this approach enables direct modulation of energy landscapes, bond strengths, and transition pathways in materials without altering their chemical composition. [...]

Context. Microquasars have emerged as promising candidates to explain the cosmic-ray flux at petaelectronvolt energies. [...]

Simplified Template Cross Sections (STXS) have been adopted by the LHC experiments as a common framework for Higgs measurements. Their purpose is to reduce the theoretical uncertainties that are directly folded into the measurements as much as possible, while at the same time allowing for the combination of the measurements between different decay channels as well as between experiments. [...]

Achieving optimal mechanical properties, including hardness and fracture toughness, by controlling grain size is a fundamental and long-standing objective in the development of hard and superhard transition metal borides (TMBs) ceramics. It is expected that the mechanical performance of TMBs will be substantially enhanced in nano-crystalline ceramics. [...]

This article examines the influence of unintentional Cr3+and Fe3+impurity ions on the luminescent properties of Gd3Ga5O12(GGG) single crystals. The characteristic features of the spectra excited by high-energy syn-chrotron radiation in the temperature range of 10–300 K are analyzed [...]