# The Graphene Brain Implant Works. Now the Hard Part Begins. - slug: the-graphene-brain-implant-works-now-the-hard-part-begins - date: 2026-04-21 - category: Biotech & Life Sciences Eight patients got a graphene brain implant in the first human trial. Zero adverse events. But nobody can make medical-grade graphene at commercial scale yet, and that may determine whether it ever reaches patients. ---