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“#Chemists resolve origin of perovskite instability” (Upper left) Room temperature Cs electron density from single crystal X-ray diffraction measurements showing significant elongation, a signature of rattling. (Bottom) Cs-I distances for the dominant Cs site CsA and secondary site CsB with (upper right) histogram of distances. Credit: Daniel Straus Researchers in the Cava Group at the…
“#Scientists reveal mechanism of dioxygen activation” Credit: Pixabay/CC0 Public Domain Metalloenzyme can couple dioxygen activation to substrate functionalization, which often exhibits unrivaled efficiency, even at ambient conditions. It is believed that metal-superoxo intermediates are formed in dioxygen activation, and then further reduced to metal-peroxo and ultimately to -oxo species. However, the chemistry of metal-superoxo complexes…
“#Research team proposes technology for producing superplastic wire” Credit: CC0 Public Domain Currently, low-alloy aluminum is widely used in electrical engineering and machine building. At the same time, it should be noted that modern electrical engineering places very high and in some cases mutually exclusive requirements to aluminum alloys. For example, conductive aluminum alloys must…
“#New high proton conductors with inherently oxygen deficient layers open sustainable future” We report Ba5Er2Al2ZrO13, a hexagonal perovskite-related oxide as a new class of proton conductors exhibiting higher conductivities than 10?3 S cm?1 between 300 and 1200°C. A new structure family of proton conductors with the inherently oxygen-deficient h? layer offers a strategy in designing…
“#Making plastic more transparent while also adding electrical conductivity” Jay Guo holds a sheet of flexible transparent conductor on the University of Michigan’s College of Engineering North Campus. The material sandwiches a thin layer of silver between two “dielectric” materials, aluminum oxide and zinc oxide, producing a conductive anti-reflection coating on the sheet of plastic….
“#Scientists synthesize novel artificial molecules that mimic a cell membrane protein” An unsymmetrical molecular structure allows for oriented insertion of the synthetic amphiphile to a bilayer by addition to a pre-formed membrane. Complexation with a ligand prompts ion transportation by forming a supramolecular channel, and removal of the ligand deactivates the transportation function. Credit: Tokyo…
“#Researchers solve a 60-year-old puzzle about a superhard material” Researchers have cracked a 1960s puzzle about the crystal structure of a superhard tungsten boride. Credit: Pavel Odinev / Skoltech Skoltech researchers, together with their industrial colleagues and academic partners, have cracked a 1960s puzzle about the crystal structure of a superhard tungsten boride that can…
“#West Virginia researchers use neutrons to study materials for power plant improvements” Researchers from West Virginia University used VULCAN at the Spallation Neutron Source to study materials called high-entropy oxides to develop industrial and consumer-based applications for improved energy storage and conversion. Team members include (left) Wei Li, Yi Wang, Wenyuan Li, Hanchen Tian, and…
“#Crystal structure discovered almost 200 years ago could hold key to solar cell revolution” Perovskite structure. Credit: John Labram, Oregon State University. Solar energy researchers at Oregon State University are shining their scientific spotlight on materials with a crystal structure discovered nearly two centuries ago. Not all materials with the structure, known as perovskites, are…
“#Scientists dissociate water apart efficiently with new catalysts” Research in a University of Oregon chemistry lab has advanced the effectiveness of the catalytic water dissociation reaction in bipolar membranes. A three-member team used a membrane-electrode assembly where the polymer bipolar membrane is compressed between two rigid porous electrodes, allowing them to make a large number…