▎ 摘　　要

NOVELTY - The apparatus has a graphene-based surface plasmon resonance (SPR) sensor which has a conductive layer, a dielectric layer on the conductive layer, and graphene on a side of the dielectric layer opposite the conductive layer (104a). A light source is adjacent to a first side of the graphene-based SPR sensor proximal to the graphene, and a detector is adjacent to a second side of the graphene-based SPR sensor proximal to the conductive layer. The graphene has multiple, evenly spaced graphene strips, in which each of the graphene strips has a width of from about 50 nanometers to 5 micrometers. USE - Testing apparatus. ADVANTAGE - The device provides improved plasmonic materials for SPR sensing. Prevents distortion of the graphene from occurring by employing a material in the trenches having a different permittivity. DESCRIPTION OF DRAWING(S) - The drawing shows the cross-sectional diagram illustrating an optional coating having been deposited onto the substrate covering and protecting the graphene nanoribbons. Substrate (104) Conductive layer (104a) Insulating dielectric layer (104b) Nanoribbon (302) Coating (502)