New research has established graphene as the thinnest known coating for protecting metals against corrosion.
An artist’s rendering of a colliding wind binary. A colliding-wind binary is a binary star system in which the two members are massive stars that emit powerful, radiatively-driven stellar winds. The location where these two winds collide produces a strong shock front that can cause radio, X-ray and possibly synchrotron radiation emission. Wind […]
Satellite imagery of a volcanic desert reveals its greener past: The sands of Harrat Khaybar, in the Saudi Arabian desert, weren’t always so parched. Evidence on the ground, such as fossilized hippo teeth, has led geologists to conclude that this dessicated lava field was once a lush grassland. But the case is even clearer from […]
Millions of nanosize “nails” form a highly repellent surface: A trio of prismatic drops (left to right: water, ethylene glycol and ethanol) balances on a new ultra-repellent surface invented by scientists at the University of Wisconsin–Madison. The surface, made up of silicon spikes just 400 nanometers wide, physically repels a wide variety of liquids, including […]