Graphene Technologies

 Graphene Synthesis

Graphene Synthesis by Exfoliation
Graphene was first isolated by the manual exfoliation of pyrolytic graphite using adhesive tape. Since then, other techniques have been developed to mechanically exfoliate graphene from graphite including sonication, reduction of graphene oxide,and electrochemical exfoliation.

Graphene Synthesis by Chemical Vapor Deposition
Chemical vapor deposition (CVD) is a widely used method to grow single layers of graphene on metal surfaces. Although several conditions have been reported, methane is the most commonly used carbon source and Cu metal is the most commonly used substrate. Controlled sublimation (CCS) is a method somewhat related to CVD where graphene is grown from silicon carbide (SiC) at elevated temperatures in which silicon is sublimed from the surface leaving graphene.