An Ultrathin Graphene Brain Implant Was Just Tested in a Person

In 2004, Andre Geim and Konstantin Novoselov at the University of Manchester in England achieved a breakthrough when they isolated graphene for the first time. A flat form of carbon made up of a single layer of atoms, graphene is the thinnest known material--and one of the strongest. Hailed as a wonder material, it won Geim and Novoselov a Nobel Prize in 2010. Twenty years later, graphene is finally making its way into batteries, sensors, semiconductors, air conditioners, and even headphones. And now, it's being tested on people's brains.