▎ 摘　　要

(CN218332033-U) NOVELTY - The utility model belongs to wireless communication field, specifically relates to a terahertz wave active modulator based on two-dimensional heterojunction. the terahertz wave active modulator comprises hexagonal boron nitride, two sides of hexagonal boron nitride are respectively provided with a first graphene strip and a second graphene strip, the first graphene and the second strip graphene periodically arranged graphene the second strip graphene paved on the polydimethylsiloxane flexible substrate, Because graphene strip and hexagonal boron nitride is ultra-thin thickness and soft bending characteristics the material itself and the transparent flexible characteristics of the polydimethylsiloxane flexible substrate, the terahertz wave active modulator can be applied to the flexible wearable device. the upper part of the first graphene strip is provided with an ion liquid grid, realizing the voltage control of the graphene Fermi level. The dynamic regulation and modulation speed of the terahertz wave modulator is fast. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a terahertz wave active modulator based on two-dimensional heterojunction. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a two-dimensional heterojunction based terahertz wave active modulator for use in a flexible wearable device i.e. smart watch. 1First graphene strip 2Second graphene strip 3Hexagonal boron nitride 4Dimethyl silicone polymer flexible substrate 5Ion liquid grid