▎ 摘　　要

NOVELTY - Forming a material involves providing a graphene layer structure having first portions on a non-metallic substrate. The first portions having surface defects comprise excess out-of-plane material. The first portions of the graphene layer structure are plasma etched to remove the out-of-plane material. A material is deposited for injecting charge into, or extracting charge out of, the graphene layer structure onto the plasma-etched first portions. USE - Method for forming a material on a graphene layer structure for injecting charge into, or extracting charge out of, the layer structure, and for use in an electronic component for biosensing. ADVANTAGE - The method provides improved electrical connections on a graphene sheet material, very high quality graphene with a reduced number of defects, excellent electrical, thermal and mechanical properties, and has lower cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electronic component, which comprises a graphene layer structure on a substrate, the graphene layer structure having a substantially continuous surface, the surface having metal contacts, each on portions of surface, where each portion of the surface having a metal contact has a flat planar surface and surface discontinuities, where the metal contact lies across and within the surface discontinuities.