▎ 摘　　要

NOVELTY - The utility model claims a graphene super-material terahertz sensor for detecting chlorpyrifos-methyl; the sensor is composed of a metal aluminium layer dielectric layer and a graphene metamaterial layer three-layer structure; the graphene metamaterial layer unit structure is composed of a central square sheet and a square ring; the unit structure array is periodically arranged on the dielectric substance layer in the xoy plane; when the terahertz wave with the frequency of 0-1.0THz is incident on the graphene metamaterial sensor with the methyl chlorpyrifos on the upper surface, generating the electric couple resonance; the pi electron of the methyl chlorpyrifos and the graphene pi electron generate strong interaction to form conjugated large pi key; different concentrations of chlorpyrifos changing the different degrees of graphene Fermi level, so that the sensor is different to terahertz wave absorptivity, realizing the concentration detection of the methyl chlorpyrifos. The graphene super-material terahertz sensor has simple structure, low cost and so on, and has good application prospect in human body safety and food safety