Designing next-generation optical antennas

Antennas catch radio waves, a form of electromagnetic radiation, from the air and convert the energy into electrical signals that feed modern telecommunications. They can also convert electrical signals into radio waves. ...

How your WiFi can protect against intruders

The applications of wireless networks go far beyond logging onto the free Airport WiFi while you wait to board your flight, or binge watching the latest Netflix series on a rainy Sunday afternoon.

Researchers turn light upside down

Researchers from CIC nanoGUNE (San Sebastian, Spain) and collaborators have reported in Science the development of a so-called hyperbolic metasurface on which light propagates with completely reshaped wafefronts. This scientific ...

Wi-fi on rays of light—100 times faster, and never overloaded

Slow wi-fi is a source of irritation that nearly everyone experiences. Wireless devices in the home consume ever more data, and it's only growing, and congesting the wi-fi network. Researchers at Eindhoven University of Technology ...

NASA sees newborn Tropical Depression 08W in infrared

Infrared satellite data helps identify cloud top and sea-surface temperatures, and the AIRS instrument aboard NASA's Aqua satellite captured those when it flew over Tropical Depression 08W in the western North Pacific Ocean. ...

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