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Watch this graphene paper slither around like it's alive

Steve Dent, @stevetdent
November 9, 2015
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Researchers from China have taken shape-memory materials to a creepy new level with a self-folding paper that can propel itself by "walking." Sorcery? Not quite. It's actually made from everybody's favorite wonder-material, graphene, and heated by an infrared laser that causes active regions to contract, then expand when it shuts off. By placing the regions in strategic locations, the team can make the paper move in any direction. It isn't going to put a scare into Sarah Connor just yet, but the team thinks it could one day be used to create contracting "muscles" that do power murderous 'bots. In the near term, the material could lead to low-cost temperature and humidity sensors.

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