You’ve seen temporary tattoos that go on the skin. This one is electronic and clings to the heart.
In rats, a graphene “tattoo” stuck to the heart could treat an abnormally sluggish beat. Like a futuristic pacemaker, the deviceThe electronic device is currently a proof of concept, but a version for use in human hearts could be ready for testing within five years, estimates Igor Efimov, a cardiovascular engineer at Northwestern University in Chicago.
. Unlike the metal components often used in electronics, graphene is “atomically thin,” says Dmitry Kireev, a biomedical engineer at the University of Texas at Austin who developed the graphene tattoos. , says Nai-Chang Yeh, a Caltech physicist who was not involved in the work . “Graphene is very flexible, it’s biocompatible, it’s highly transparent, it’s highly conductive and it’s mechanically strong,” she says.
The tattoos sandwich a transparent layer of graphene between sheets of stretchy silicone and ultrathin polymer. Gold tape connects the graphene to wires that run to a power source, which sends electricity through the device.
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