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Thread: Stunning material .... Carbon is good

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    Stunning material .... Carbon is good

    http://nanotechweb.org/cws/article/tech/35061

    For we techies, read this. Maybe it can help you in your life.

    To get you started....

    Since "wonder material" graphene - sheets of carbon just one atom thick - was discovered in 2004, it has been shown to be an extremely good electrical conductor; a semiconductor that can be used to create transistors; and a very strong material. But now, Columbia University's James Hone, Jeffrey Kysar, Changgu Lee and Xiaoding Wei have shown that it is the strongest material ever (Science 321 385).
    The researchers measured the intrinsic strength of the material — that is the maximum stress that a pristine (or defect-free) material can withstand just before all the atoms in a given cross-section are pulled apart at the same time. Essentially all materials contain defects, such as microscopic cracks or scratches, which are "weaker" than surrounding material. As a result, the breaking stress of a macroscopic material depends mainly upon the number and sizes of defects it contains, rather than its intrinsic strength.
    The researchers began by exfoliating individual atomic layers of graphene from a graphite source using transparent sticky tape — the most popular way of preparing monolayer graphene. Next, they placed the graphene flakes over a series of holes on a silicon wafer - rather like placing plastic cling film over a tiny "muffin tin". Each hole measured either 1.0 or 1.5 µm across.
    Last edited by Bob; 06-01-2014 at 12:49 AM.

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    GrassrootsConservative (06-01-2014)

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    Now that's cool.

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    Bob (06-01-2014)

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