Imprinting nanopatterns in metals with diamonds

Materials scientists are imprinting nano-patterns in metals, a technology that could give metallic surfaces permanent functionality, like a lotus effect or reduced frictional properties.

Rare-earths become water-repellent only as they age

Surfaces that have been coated with rare earth oxides develop water-repelling properties only after contact with air. Even at room temperature, chemical reactions begin with hydrocarbons in the air. Researchers report that it is these reactions that are responsible for the hydrophobic effect.

Single-angle ptychography allows 3D imaging of stressed materials

Scientists have developed a new form of imaging that uses X-ray diffraction patterns, called single-angle Bragg ptychography.