By mimicking structures found in seashells, scientists have created a transparent plastic that is as strong as steel.
For years scientists have tried to build sturdy materials for larger products from ultrastrong nano-size building blocks, such as nanotubes, nanosheets and nanorods, only to have the larger structures turn out comparatively weak.
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http://www.msnbc.msn.com/id/21268376/ns/technology_and_science-innovation/t/nanotech-produces-plastic-strong-steel/#.T67A1-stjE1
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