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  • The optical rectenna, you could think of it

  • as like a radio antenna, only for the sun.

  • It's working off of very similar principles,

  • where we instead have very tiny antenna

  • that match the size of the energy coming

  • from the sun or visible light.

  • And when that energy is coupled into the antenna,

  • then another device is used to extract the energy

  • and turn it into electricity.

  • So making a rectenna is actually a pretty simple process,

  • which was part of the beauty of the discovery.

  • You basically take any type of conductive substrate,

  • and we can grow these carbon nanotubes

  • like a carpet-- vertical off the substrate.

  • We grow our nanotube.

  • We can formally coat them with something

  • that is an electrical insulator, then

  • we deposit another layer of metal on top

  • to create a so-called metal insulator or metal diode

  • structure.

  • And so that diode structure is important,

  • because it's the fastest diode in the world.

  • And it's the only diode that's fast enough to open and close

  • the gate at the speed of solar energy oscillating

  • in an antenna.

  • What gets me excited today is that we've done it.

  • That we've actually achieved the goal that

  • was six years in the making.

  • But that's enough to get me out of bed every day,

  • because I think if we achieve that goal,

  • we're going to make solar cells that

  • are twice as efficient of what we have today.

  • And that, to me, is an opportunity

  • to change the world in a very big way.

The optical rectenna, you could think of it


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B2 中上級

光を直流電流に変換する初の光レクテナ (First Optical Rectenna Converts Light to DC Current)

  • 78 6
    elearn に公開 2021 年 01 月 14 日