A graphene “tattoo” could help hearts keep their beat

In rats, the electronic device was able to treat an irregular heartbeat

A photo of a hand holding a light colored rectangle with darker lines running across it.

This graphene electronic device rests on temporary tattoo paper and can be transferred to body tissues. A smaller version, tested in rats, can act like a pacemaker.

Ning Liu/University of Texas at Austin

Some tattoos truly make the heart go pitter-patter.

In rats, a graphene “tattoo” stuck to the heart could treat an abnormally sluggish beat.