Graphene encapsulation provides unprecedented view of the diffusion and rotation of fullerene molecu

Carbon is one of the most versatile elements: it forms the basis for an enormous number of chemical compounds, it has several allotropes of different dimensionality, and it exhibits many different bonding geometries. For this reason, carbon materials have had a special place in materials research for a long time. Although the three-dimensional forms of carbon—diamond and graphite—are known since ancient times, it took until 1985 before the first low-dimensional carbon allotrope, the