Matamaterial development for Terahertz absorber with dynamic tunable property

Typical metamaterials which could achieve dynamic tunable property of terahertz absorption such as VO2, STO and graphene were reviewed. VO2, STO, Graphene are typical terahertz dynamic tunable absorbing metamaterial. Their unique optoelectronic properties can alter the properties of the material itself under changing external conditions, thereby achieving dynamic modulation of absorbed terahertz waves. The reasons of metamaterials could be used as terahertz dynamic absorbers were analyzed from the aspects of lattice structure, material properties, and electrical properties. The adjustable properties of each of the three materials and the external conditions required for tunable properties were explained. Simultaneously demonstrate the structure of metamaterials composed of three materials and their respective terahertz absorption properties. The advantages and disadvantages of three materials as terahertz dynamic absorbers were analyzed and discussed. The future development of three materials as terahertz dynamic absorbers was discussed, and the challenges and development of metamaterials in terahertz absorption dynamic modulation were reviewed.