Scientists have made a groundbreaking discovery in the field of cardiovascular medicine with the development of a graphene-based "tattoo" that could potentially treat irregular heartbeats. In a recent article published in Advanced Materials, researchers revealed that this electronic device, resembling a futuristic pacemaker, successfully delivered electrical signals to the heart, restoring its normal rhythm in experiments conducted on rats.

By "tatoo," do they mean an external, non-invasive skin patch? To read more, click here.