▎ 摘　　要

NOVELTY - The device has a substrate, a single-layer graphene film, n U-shaped open annular metal strips (4) and 2n concave-like metal strips (5). n integer greater than or equal to 2. The single-layer graphene film is arranged on the substrate. The n U-shaped open annular metal strips are periodically arranged on the single-layer graphene film. Two concave-like metal strips are symmetrically arranged inside each U-shaped open annular metal strip. The U-shaped open annular metal strip and the two concave-like metal strips are coupled with each other to generate the EIT effect. The opening direction of the U-shaped opening annular metal strip is consistent with the concave opening direction of the concave metal strip. USE - Frequency adjustable terahertz electromagnetic induction transparent device used for sensing and high speed slow light modulation (claimed). ADVANTAGE - The structure realizes frequency adjustable by changing the geometric size to realize passive control, has higher efficiency and feasibility. The opening direction of the U-shaped opening annular metal strip is consistent with the notch direction of concave-like metal strip. The frequency adjustable terahertz electromagnetic induction transparent device is used for sensing, high speed slow light modulation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for controlling and frequency of the frequency adjustable terahertz electromagnetic induction transparent device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the frequency adjustable terahertz electromagnetic induction transparent device. U-shaped opening annular metal strip (4) Concave-like metal strip (5)