E-Mail
IMAGE: View through a window of the interior of an ultra-high vacuum reactor where TiO2 nanotubes are decorated with CoO nanoparticles. We see the flame (plasma produced by laser ablation) that. view more
Credit: Christian Fleury (INRS)
A research team from the Institut national de la recherche scientifique (INRS) has joined forces with French researchers from the Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES), a CNRS-University of Strasbourg joint research lab, to pave the way towards the production of green hydrogen. This international team has developed new sunlight-photosensitive-nanostructured electrodes. The results of their research were published in the November 2020 issue of the journal of
E-Mail
IMAGE: Fig.2 Electron dynamics around a misoriented molecular defect. (a) STM image and snapshots obtained over an area including the defect indicated by the white arrow. Snapshots clearly show that electrons. view more
Credit: University of Tsukuba
Tsukuba, Japan - A team of researchers from the Faculty of Pure and Applied Sciences at the University of Tsukuba filmed the ultrafast motion of electrons with sub-nanoscale spatial resolution. This work provides a powerful tool for studying the operation of semiconductor devices, which can lead to more efficient electronic devices.
The ability to construct ever smaller and faster smartphones and computer chips depends on the ability of semiconductor manufacturers to understand how the electrons that carry information are affected by defects. However, these motions occur on the scale of trillionths of a second, and they can only be seen with a microscope that can image individual atoms. It may seem like an imposs
E-Mail
Scientists from an international collaboration have found evidence of alpha particles at the surface of neutron-rich heavy nuclei, providing new insights into the structure of neutron stars, as well as the process of alpha decay.
Neutron stars are amongst the most mysterious objects in our universe. They contain extremely dense matter that is radically different from the ordinary matter surrounding us being composed almost entirely of neutrons rather than atoms. However, in the nucleus at the center of normal atoms, matter exists at similar densities. Understanding the nature of matter at such extremes is important for our understanding of neutron stars, as well as the beginning, workings, and final fate of the universe, says Junki Tanaka, one of the leaders of the study.
E-Mail
IMAGE: The inherent delay between the emission of the two types of electron leads to a characteristic ellipse in the analysed data. In principle, the position of individual data points around. view more
Credit: Daniel Haynes / Jörg Harms
An international consortium of scientists, initiated by Reinhard Kienberger, Professor of Laser and X-ray Physics at the Technical University of Munich (TUM), several years ago, has made significant measurements in the femtosecond range at the U.S. Stanford Linear Accelerator Center (SLAC).
However, on these miniscule timescales, it is extremely difficult to synchronize the X-ray pulse that sparks a reaction in the sample on the one hand and the laser pulse which observes it on the other. This problem is called timing jitter, and it is a major hurdle in ongoing efforts to perform time-resolved experiments at XFELs with ever-shorter resolution.
E-Mail
IMAGE: Dissociation pressures of various clathrate hydrates across a range of cryogenic temperatures. The upper regions of each curve indicate stable boundaries of the clathrate hydrates. (Similar colors have been used. view more
Credit: 2021 Hideki Tanaka, Okayama Univ.
Just like on Earth, water on other planets, satellites, and even comets comes in a variety of forms depending on multiple factors such as pressure and temperature. Aside from the gaseous, liquid, and solid states we are accustomed to, water can form a different type of crystalline solid called clathrate hydrate. Although they look similar to ice, clathrate hydrates have actually small water-based cages in which smaller molecules are trapped. These trapped guest molecules are essential for preserving the crystalline structure of clathrate hydrates, which would otherwise collapse into regular ice or water.