Graphene is the name given to one such sheet.It is made up entirely of carbon atoms bound together in a network of repeating hexagons within a single plane just one atom thick.

• 这种矿物的单层结构便称为石墨薄膜，是纯碳原子在同一平面上以六角形排列构成的网状结构，仅有一个原子厚。