Icosahedral order has been suggested as the prevalent atomic motif of supercooled liquids and metallic glasses for more than half a century, because the icosahedron is highly close-packed but is difficult to grow, owing to structure frustration and the lack of translational periodicity. By means of angstrom-beam electron diffraction of single icosahedra, we report experimental observation of local icosahedral order in metallic glasses. All the detected icosahedra were found to be distorted with partially face-centered cubic symmetry, presenting compelling evidence on geometric frustration of local icosahedral order in metallic glasses.
Electrochemical energy storage: The performance of MnO2 as a pseudo‐capacitive material was enhanced by doping electrodeposited MnO2 with physically deposited gold atoms (see picture). The resulting MnO2 electrodes showed an enhanced electronic conductivity and a remarkable stability under voltammetric cycling.
Elektrochemischer Energiespeicher: Das Leistungsverhalten von MnO2 als pseudokapazitives Material wurde durch Dotieren mit Goldatomen gesteigert (siehe Bild). Die resultierende MnO2‐Elektrode zeigte eine erhöhte elektrische Leitfähigkeit und eine bemerkenswerte Stabilität unter cyclovoltammetrischer Zyklierung.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.