Who has not dreamed of an invisibility cloak like the one used by Harry Potter? It sounds like magic, but it could become reality with the help of so-called metamaterials. In the summer of 2026, some of the world's leading researchers in the field gathered in Umeå for a Nobel Symposium on metamaterials. The symposium was organized by Nicolò Maccaferri, associate professor at Umeå University. He studies these special materials, which over the past few decades have proven useful in fields ranging from telecommunications to medical technology.