Silly putty is apparently miraculous.
It doesn't walk down stairs - along or in pairs. It doesn't roll over your neighbor's dog.
But it does appear to be usable as a pressure sensor when graphene is added to it. The graphene turns the silly putty into a conductive mass, the precise conductivity of which is highly sensitive to changes in pressure - to the point where it can be used to monitor the blood pressure and pulse in the carotid artery.
Source - NPR and Science
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