Yang Xu

A catalyst is a substance that speeds up a chemical reaction without being consumed itself. The best catalyst is one where every metal atom counts: the finer the particles, the more atoms are on the surface and the more active the material.

Three voices merging into a single chord. In the physics of quantum materials, this image takes on a literal meaning: three layers of graphene, separated by thin spacers, force electrons and holes from different layers to move as a single fluid.