▎ 摘　　要

NOVELTY - Dynamically adjustable double-chiral graphene composite nano device comprises a substrate (10), dielectric layer (20), graphene layer (30), metal structure layer (40), the graphene layer comprises a graphene nano-structure unit periodically arranged, where the graphene nano-structure unit comprises a first graphene nano-belt and second graphene nano-belt arranged in parallel, a gap is set between the first graphene nano-belt and the second graphene nano-belt, the metal structure layer comprises first metal nano-rod arranged in the same period in the direction vertical to the first graphene nano-belt, second metal nano-rod, third metal nano-rod, fourth metal nano-rod, the first metal nano-rod and the second metal nano-rod are placed on the first graphene nano-belt. USE - Dynamically adjustable double-chiral graphene composite nano device used in biological monitoring, analytical chemistry, broadband circular polarization, negative refractive index medium field. ADVANTAGE - The device realizes regulation of chiral size and structure by change of voltage and temperature, thus effectively reducing cost of the chiral control. The device allows the metal nano-rod and the graphene nano-belt to excite strong local surface plasmon resonance under action of circular polarized light, so that the substrate surface excites surface plasmons resonance by loading different voltage on the first and second graphene nanometre belts, thus adjusting asymmetry of the graphene nanometricre belt, and hence enhancing non-symmetry of a graphene nanoometre belt and obtaining CD signal in an effective manner. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a device. Substrate (10) Dielectric layer (20) Graphene layer (30) Metal structure layer (40)