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Just came across this article in the Irish Times about what happens when you combine graphene and silly putty and use it as a sensor. The synergism is pretty impressive – combining this with Arduino or a micro processor designed with the material in mind could make a very interesting toy/educational programming tool.

Jonathan Coleman holding a piece of G-Putty while his son Oisin holds a piece of Silly Putty. Photograph: Naoise Culhane.