Controlled growth of single-crystal twelve-pointed graphene grains on a liquid Cu surface

Abstract

The controlled fabrication of single-crystal twelve-pointed graphene grains is demonstrated for the first time by ambient pressure chemical vapor deposition on a liquid Cu surface. An edge-diffusion limited mechanism is proposed. The highly controllable growth of twelve-pointed graphene grains presents an intriguing case for the fundamental study of graphene growth and should exhibit wide applications in graphene-based electronics.

Keywords: chemical vapor deposition; graphene; liquid Cu; single-crystal; twelve-pointed shape.