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Graphene-Spiked Silly Putty Picks ­p Human Pulse

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Jonathan and Oisin Coleman

Physicist Jonathan Coleman of Trinity College Dublin with a sample of graphene-spiked G-putty. He is pictured with his son Oisn, holding Silly Putty.

Credit: AMBER/Trinity College Dublin

A dash of graphene can transform the stretchy goo known as Silly Putty into a pressure sensor able to monitor a human pulse or even track the dainty steps of a small spider.

From Nature
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