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Technology update

May 30, 2008

Carbon nanotubes extend superbridge design

Carbon nanotube bundles could be used to extend the main span of suspension bridges by up to three times, according to new work by researchers in Italy. Nicola Pugno and Alberto Carpinteri of Turin Polytechnic have calculated that the main span of the Messina bridge – which joins Sicily to mainland Italy – could be increased to more than 6 km from a possible 2 km today. The result might also allow "superbridges" to be built in the future at reduced cost, say the researchers.

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