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

A memory alloy, multi-functional technology, applied in the field of terahertz metamaterial functional devices, can solve the problems of limited control range, complex structure, and single device function.

Active Publication Date: 2021-04-23
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of complex structure, limited control range and single device function existing in existing terahertz metamaterials, and provides a dynamically adjustable multifunctional terahertz metamaterial device based on TiNi shape memory alloy thin film

Method used

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

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specific Embodiment approach 1

[0021] Specific implementation mode one: as Figure 1 ~ Figure 3 As shown, a dynamically adjustable multifunctional terahertz metamaterial device based on a TiNi shape memory alloy thin film in this embodiment includes a substrate 1 and an split resonator ring structure thin film layer, and the split resonator ring structure thin film layer is arranged on the substrate The upper surface of the bottom 1; the split resonator structure film layer includes N×N split resonator structure periodic units, and the split resonator structure periodic unit includes a single split resonator structure 2 and is symmetrically arranged on the single split resonator structure 2. Two bendable arm structures 3 at the opening; the single-opening resonant ring structure 2 is square.

[0022] In this embodiment, the shape memory alloy (SMA) is one of the most typical metal smart materials, which realizes deformation recovery through martensitic phase transformation under the action of an external fi...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that the substrate 1 is a low-doped high-resistance silicon substrate with a thickness of 5 μm and a dielectric constant of 11.86. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the material of the thin film layer of the split resonator ring structure is TiNi shape memory alloy. Other steps and parameters are the same as those in Embodiment 1 or 2.

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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...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 张琨谭昌龙刘娟田晓华黄跃武赵文彬
Owner HARBIN UNIV OF SCI & TECH
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