Jul 27, 2023 (Nanowerk News) In recent years, there has been a growing interest in using silver nanoclusters (Ag NCs), nanoscale silver particles composed of tens to hundreds of atoms, across various fields like material science, chemistry, and biology. Ag NCs typically have sizes ranging from 1–3 nm. Scientists have...
Listen to a star ‘twinkle’ (w/video)
Jul 27, 2023 (Nanowerk News) Many people know that stars appear to twinkle because our atmosphere bends starlight as it travels to Earth. But stars also have an innate “twinkle” — caused by rippling waves of gas on their surfaces — that is imperceptible to current Earth-bound telescopes. In a...
Unleashing the power of metal-organic frameworks for next-gen catalysts
Jul 27, 2023 (Nanowerk Spotlight) For nearly a century, metal promoters have been recognized for their significant role in catalysis. These substances, often metal salts, have the ability to regulate the catalytic activity of metal catalysts in reduction reactions. Despite their importance, understanding the precise action mechanism behind metal promoters...
Astronomers reveal new features of galactic black holes
Jul 27, 2023 (Nanowerk News) Black holes are the most mysterious objects in the universe, with features that sound like they come straight from a sci-fi movie. Stellar-mass black holes with masses of roughly 10 suns, for example, reveal their existence by eating materials from their companion stars. And in...
James Webb Space Telescope sees Jupiter moons in a new light
Jul 27, 2023 (Nanowerk News) With its sensitive infrared cameras and high-resolution spectrometer, the James Webb Space Telescope (JWST) is revealing new secrets of Jupiter's Galilean satellites, in particular Ganymede, the largest moon, and Io, the most volcanically active. In two separate publications, astronomers who are part of JWST's Early...
Molecular movie shows displaced electrons drive gold nanoparticle oscillations
Jul 26, 2023 (Nanowerk News) Photocatalysis, sensors, solar cells: nanoparticles that are excited by light promise a variety of applications, if the processes behind their behaviour can be controlled. One such process is a type of collective electron motions. These movements lead to energy exchange in the nanoparticle that give...
Magnetic heterostructure generates higher frequencies for information processing
Jul 26, 2023 (Nanowerk News) Novel magnetic memories are energy-efficient and robust. They are based on ferromagnets with operating frequencies in the gigahertz range. The operating frequency could be further increased with antiferromagnets, which, however, cannot be efficiently excited. Researchers from Kaiserslautern and Mainz have now shown that magnetic heterostructures...
Three-dimensional structure control technology enables high-performance fuel cells with higher stability
Jul 26, 2023 (Nanowerk News) A research team led by Dr. Yoo Sung Jong of the Hydrogen and Fuel Cell Research Center at the Korea Advanced Institute of Science and Technology (KIST) has developed a fuel cell technology with high stability over a long period of time and improved power...
AI can ask another AI for a second opinion on medical scans
Jul 26, 2023 (Nanowerk News) Researchers at Monash University have designed a new co-training AI algorithm for medical imaging that can effectively mimic the process of seeking a second opinion. Published recently in Nature Machine Intelligence ("Uncertainty-guided dual-views for semi-supervised volumetric medical image segmentation"), the research addressed the limited availability...
Advancing heteroatom-doped porous carbon nanomaterials for lithium-based energy storage applications
Jul 26, 2023 (Nanowerk News) The portable and electric energy storage market has long been dominated by lithium-ion batteries (LIBs) and supercapacitors, surpassing other energy storage systems in their ability to provide higher energy and power. However, in critical applications such as electric vehicles, there is a growing demand for...