In process

In 1990, Rembrandt’s The Night Watch was attacked with concentrated sulphuric acid. This studyreassesses the affected area and aims to identify and characterise any secondary degradationproducts, as well as any challenges for the conservation treatment. [...]

Periodically poled thin film lithium niobate waveguides provide simultaneous access to efficient second and third order nonlinear processes, enabling broadband generation of coherent laser light. Here, we demonstrate the generation of a broadband mid-infrared continuum in a nanophotonic lithium niobate waveguide pumped by a telecom-wavelength femtosecond source. [...]

Periodically poled thin film lithium niobate waveguides provide simultaneous access to efficient second and third order nonlinear processes, enabling broadband generation of coherent laser light. Here, we demonstrate the generation of a broadband mid-infrared continuum in a nanophotonic lithium niobate waveguide pumped by a telecom-wavelength femtosecond source. [...]

Overcoming the slow kinetics of the oxygen evolution reaction at the anode is a key challenge for the production of hydrogen via electrolysis. This reaction operates at very positive potentials, where the electrocatalyst is exposed to highly oxidative conditions and prone to potential-dependent transformation of the near-surface region. [...]

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. [...]

The main objective of this volume is to discuss the physical properties, observational signals and various probes of compact objects in the Universe. These include black holes, neutron stars, and exotic objects studied in alternative theories of gravity. [...]