Researchers have created tiny holograms using a
"metasurface" capable of the ultra-efficient control of light,
representing a potential new technology for advanced sensors, high-resolution
displays and information processing.
The metasurface, thousands of V-shaped nanoantennas formed
into an ultrathin gold foil, could make possible "planar photonics"
devices and optical switches small enough to be integrated into computer chips
for information processing, sensing and telecommunications, said Alexander
Kildishev, associate research professor of electrical and computer engineering
at Purdue University.