▎ 摘　　要

NOVELTY - A graphene (10) comprises etched edge portion comprising functional group. USE - Graphene used for a device e.g. sensor or field effect transistor, and graphene sheet (claimed). ADVANTAGE - The graphene edge portion is chemically modified, has different electrical properties than the electrical properties of the unmodified graphene. The electrical properties of graphene, including metallic or semiconductor characteristics, electrical resistance, band gap or work function, may be varied by the chemical modification. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of chemical modification of graphene edge (11) comprising dry etching graphene to provide graphene having etched graphene edge; and introducing functional group at etched graphene edge. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the process for chemical modification of graphene edge. Graphene (10) Graphene edge (11)