Multifunctional terahertz metamaterial device capable of being dynamically regulated and controlled based on TiNi shape memory alloy film

Abstract

The invention discloses a multifunctional terahertz metamaterial device capable of being dynamically regulated and controlled based on a TiNi shape memory alloy film. The invention relates to the field of terahertz metamaterial functional devices, in particular to the multifunctional terahertz metamaterial device capable of being dynamically regulated and controlled based on the TiNi shape memory alloy film. The invention aims to solve the problems of complex structure, limited regulation and control range and single device function of the existing terahertz metamaterial. The multifunctional terahertz metamaterial device comprises a substrate and a split-ring resonator structure thin film layer, wherein the split-ring resonator structure thin film layer comprises N*N split-ring resonator structure periodic units, and each split-ring resonator structure periodic unit comprises a single split-ring resonator structure and two bendable arm structures symmetrically arranged at an opening of the single split-ring resonator structure. The invention is used for the multifunctional terahertz metamaterial device capable of being dynamically regulated and controlled.

Description

technical field

[0001] The invention relates to the field of terahertz metamaterial functional devices, in particular to a dynamically adjustable multifunctional terahertz metamaterial device based on a TiNi shape memory alloy thin film. Background technique

[0002] Terahertz (THz) waves are a unique part of the electromagnetic spectrum that lies between microwaves and infrared, combining the advantages of both spectral regions. Due to its high-frequency field oscillation, low photon energy, high directionality, and high transparency in most material systems, it has broad applications in the fields of physical chemistry, material science, biomedicine, environmental science, safety inspection, and satellite communications. Application prospect. At present, the interaction between terahertz waves and natural materials is minimal, which directly leads to the lack of natural materials to regulate terahertz waves. Metamaterials (MMs), an artificial material composed of subwave...

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