Metamaterials are carefully engineered materials that possess desirable properties and can be used to manipulate ...

On a battlefield saturated with buzzing quadcopters and roaring loitering munitions, a new aircraft is trying to disappear rather than dominate the noise. Ukraine’s Raybird reconnaissance drone, now ...

Researchers at Finland’s Aalto University have engineered a wafer-thin “cloud” metasurface that can flip between bright white and deep grey, shifting a surface from powerful daytime cooling to rapid ...