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Terahertz tuning device based on graphene

A technology of graphene and graphene layers, which is applied in the field of terahertz tuning devices, can solve the problems of small tuning depth and single tuning frequency, and achieve the effect of excellent modulation depth

Inactive Publication Date: 2015-07-29
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of single tuning frequency and small tuning depth in existing terahertz metamaterial tuners, and provides a graphene-based terahertz tuning device

Method used

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  • Terahertz tuning device based on graphene
  • Terahertz tuning device based on graphene
  • Terahertz tuning device based on graphene

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specific Embodiment approach 1

[0011] Specific implementation mode one: as figure 1 , figure 2 and image 3 As shown, a graphene-based terahertz tuning device in this embodiment is composed of a substrate 1, an insulating dielectric layer 2 and a graphene layer 3 with a split resonant ring structure, the substrate 1 is horizontally arranged at the bottom layer, and the The insulating medium layer 2 is arranged in parallel on the upper surface of the substrate 1, and the split resonant ring structure graphene layer 3 is arranged in parallel in the middle of the upper surface of the insulating medium layer 2; the split resonant ring structure graphene layer 3 The shape of the upper surface and the lower surface is the same, the thickness of the split resonator ring structure graphene layer 3 is 0.34 μm, and the upper surface of the split resonator ring structure graphene layer 3 is composed of upper side 4, middle column 5, lower side 6, first The opening edge 7, the second opening edge 8, the third openin...

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment differs from Embodiment 1 in that: the substrate 1 is a square high-resistance silicon plate with a thickness of 500 μm, and its side length is 50 μm; the resistivity of the square high-resistance silicon plate is greater than 10000, the dielectric constant is 11.9. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the insulating dielectric layer 2 is a square silicon dioxide plate with a thickness of 3 μm, and its side length is 50 μm; The dielectric constant is 2.88. Other steps and parameters are the same as those in Embodiment 1 or 2.

[0016] In this embodiment, the loss tangent of the square silicon dioxide plate is tan(δ)=0.05, where δ is the loss angle of the insulating medium 2 .

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Abstract

The invention relates to a terahertz tuning device based on graphene and aims to solve problems of single tuning frequency and small tuning depth in terms of existing terahertz metamaterial tuning devices. The terahertz tuning device based on the graphene comprises a substrate, an insulating medium layer and a split resonant ring structured graphene layer, the substrate is horizontally arranged on a lowest layer, the insulating medium layer is parallelly disposed on the upper surface of the substrate, and the split resonant ring structured graphene layer is parallelly disposed in the middle of the upper surface of the insulating medium layer. The terahertz tuning device based on the graphene is used for the field of terahertz communication.

Description

technical field [0001] The invention relates to a graphene-based terahertz tuning device. Background technique [0002] In recent years, artificial electromagnetic materials (Metamaterials) have made breakthroughs in terahertz functional devices, but due to material limitations, a device of artificial electromagnetic materials can only modulate terahertz waves of a single frequency and the modulation depth is small . As an excellent conductor material, graphene's Fermi energy level can be adjusted by an external electric field. The difference in Fermi energy leads to a change in the dielectric constant, which makes it possible for artificial electromagnetic material devices to modulate multi-band terahertz. Contents of the invention [0003] The present invention provides a graphene-based terahertz tuning device in order to solve the problems of single tuning frequency and small tuning depth in existing terahertz metamaterial tuners. [0004] A graphene-based terahertz t...

Claims

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Application Information

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IPC IPC(8): H01P1/00
Inventor 吴丰民张景云张昊姬广举李珊刘佳宝张凌睿林博伦
Owner HARBIN UNIV OF SCI & TECH
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