Graphene 'tattoo' treats cardiac arrhythmia with light: First graphene-based cardiac implant senses irregularities, then stimulates the heart

Researchers have developed the first cardiac implant made from graphene, a two-dimensional super material with ultra-strong, lightweight and conductive properties. Similar in appearance to a child's temporary tattoo, the new graphene 'tattoo' implant is thinner than a single strand of hair yet still functions like a classical pacemaker.