News Health & Medicine A graphene “tattoo” could help hearts keep their beat In rats, the electronic device was able to treat an irregular heartbeat 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 Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Meghan Rosen April 23, 2023 at 7:00 am Some tattoos truly make the heart go pitter-patter. In rats, a graphene “tattoo” stuck to the heart could treat an abnormally sluggish beat.