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Nano Optical Antennas

Nanotechnology Antennas Light

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The antenna, a century-old technology, is everywhere. Listening to the radio? Making a call on your cell phone? Surfing the web over Wi-Fi? The antenna made it all possible.


Now, the antenna is changing optics, too.


At Federico Capasso’s lab at Harvard University, researchers have devised a new way of manipulating light using nano-scale optical antennas. They effectively take a radio antenna, bend it into a V, and shrink it by a factor of about a million, to create what is called an “optical resonator.” By patterning a surface with a number of these resonators, bent at different angles—to create what’s known as a metasurface—they discovered they could get light to do just about anything they want.


What difference does it make?




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Nice article & website, will be following them. It seems we're hearing more & more about nanotechnology these days. 

Edited by Ewan, 24 April 2013 - 07:25 PM.

Also tagged with one or more of these keywords: Nanotechnology, Antennas, Light

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