News tagged with antennae

Rediscovering spontaneous light emission

Berkeley Lab researchers have developed a nano-sized optical antenna that can greatly enhance the spontaneous emission of light from atoms, molecules and semiconductor quantum dots. This advance opens the door to light-emitting ...

dateFeb 03, 2015 in Optics & Photonics
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Pyramid nanoscale antennas beam light up and down

Researchers from FOM Institute AMOLF and Philips Research have designed and fabricated a new type of nanoscale antenna. The new antennas look like pyramids, rather than the more commonly used straight pillars. The pyramid ...

dateDec 17, 2014 in Nanophysics
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Chu's Limit—a limit no more

Chu's Limit, a fundamental principle of electromagnetics, dictates that the bandwidth an antenna can function in has a maximum level proportional to the physical size of the antenna—the smaller the antenna, the smaller ...

dateFeb 23, 2017 in Engineering
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