Nanostructures

How are nanowires made?
Answered by Planet Green
  • Planet Green

    Planet Green

  1. Nanowires, which measure about one-billionth of a meter, can be created either by paring down larger elements or by starting at the atomic level and building up. An example of top-down building is how nanoscale fiber-optic wires are made from sapphire. First, a specialist wraps a heated sapphire rod in cables and stretches it to nano-thinness.

    Alternatively, scientists can pass a regular fiber-optic cable through a tiny furnace made of a sapphire tube and stretch it. Or they can use a "flame brush" -- a tiny flame stays lit under the wire while it is stretched. Nanowires also can be "grown;" this is considered a bottom-up approach. Another approach uses silicon wafers to arrange the wires and press them against a synthetic rubber to form a stamp. This "print" of gold nanowires can then be transferred to another surface [source: Nature Nanotechnology].

    More answers from Planet Green »



Still Curious?
  • What might the first nanoscopic machines look like?


    Answered by Discovery Channel

  • Will we soon have superhuman troops?


    Answered by Science Channel

  • How are nanowires used?


    Answered by Planet Green

Advertisement

What are you curious about?

Image Gallery