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Adjustable metamaterial based on working frequency and production method thereof

A technology of working frequency and metamaterials, applied in the field of metamaterials, can solve problems such as complex preparation and processing procedures and poor tuning functions

Active Publication Date: 2012-07-04
KUANG CHI INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the microstructure of metamaterials is mostly metal box dielectric materials, the preparation and processing procedures are complex and the tuning function is poor.

Method used

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  • Adjustable metamaterial based on working frequency and production method thereof
  • Adjustable metamaterial based on working frequency and production method thereof
  • Adjustable metamaterial based on working frequency and production method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0026] A preparation method based on a metamaterial with adjustable working frequency, the preparation method comprises the following steps:

[0027] S1: Clean and dry the selected substrate 1, which is made of thermoplastic polymer material with low dielectric constant, such as ABS;

[0028] S2: Etch an array of grooves 2 on the substrate, and at the same time etch micropores 3 connected to the outside on the inner wall of each groove, such as figure 1 As shown, the diameter of the groove 2 is determined by the design of the main operating frequency of the actually required metamaterial;

[0029] S3: The two substrates 1 etched with the array of grooves 2 are relatively bonded, and the grooves are combined to form a microstructure cavity 4. The cavity is spherical, ellipsoidal, cubic, cuboid, or cylindrical. body or any desired shape;

[0030] S4: inject liquid crystal with high dielectric constant into the microstructure cavity 4 through micropores, and seal the micropores...

Embodiment 1

[0034] S1: Clean and dry the selected substrate;

[0035] S2: Etch a hemispherical groove array with a diameter of 3 mm on the substrate, and at the same time etch a microhole connected to the outside on the inner wall of each groove;

[0036] S3: bonding the two substrates etched with groove arrays relative to each other, so that the grooves are merged to form a hollow spherical cavity;

[0037] S4: Inject liquid crystal with high dielectric constant into the hollow spherical cavity through micropores, and seal the micropores with resin to obtain a two-dimensional metamaterial.

[0038] Among them, since the microstructure is a liquid crystal material, and the dielectric constant of the liquid crystal is sensitive to temperature and electric field, when the external temperature or electric field changes, the dielectric constant of the liquid crystal also changes accordingly, making the operating frequency of the metamaterial The range becomes wider, which expands the applica...

Embodiment 2

[0040] S1: Clean and dry the selected substrate;

[0041] S2: Etch a hemispherical groove array with a diameter of 3 mm on the substrate, and at the same time etch a microhole connected to the outside on the inner wall of each groove;

[0042] S3: bonding the two substrates etched with groove arrays relative to each other, so that the grooves are merged to form a hollow spherical cavity;

[0043] S4: Inject liquid crystal with high dielectric constant into the hollow spherical cavity through micropores, and seal the micropores with resin to obtain a two-dimensional metamaterial.

[0044] S5: The multi-layer two-dimensional metamaterial is mechanically fixed, and the edge of each layer of two-dimensional metamaterial is aligned and fixed to obtain a three-dimensional metamaterial.

[0045] Embodiment 2 Compared with Embodiment 1, multiple two-dimensional metamaterials are fixed to make three-dimensional metamaterials, which expands the application range of metamaterials.

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Abstract

The invention provides an adjustable metamaterial based on working frequency and a production method thereof, wherein the production method comprises the following steps that: groove arrays are processed on a base material, and micropores which are communicated with the outside are processed on the inner walls of all the grooves; and two pieces of base materials are bonded with each other, so the grooves are correspondingly bonded to form a hollow cavity body, liquid crystal is injected into the hollow cavity body through the microspores, so the metamaterial is obtained. Because the dielectric constant of the liquid crystal is changed along with the variation of the temperature or the electric field of the outside, the working frequency of the metamaterial can be selected within a larger range, and the tunability within a certain frequency range is realized; and the metamaterial can be used as a focusing lens, a resonant cavity and the like for microwaves and radio-frequency bands.

Description

【Technical field】 [0001] The invention relates to the field of metamaterials, in particular to a metamaterial based on an adjustable operating frequency and a preparation method thereof. 【Background technique】 [0002] Metamaterials refer to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, it is possible to break through the limitations of some apparent natural laws, so as to achieve supernormal material functions beyond the ordinary properties inherent in nature. The properties and functions of metamaterials mainly come from their internal structures rather than the materials that make them up, so a lot of research work has been done to design and synthesize metamaterials. In 2000, Smith et al. of the University of California pointed out that the composite structure of periodically arranged metal wires ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
Inventor 刘若鹏赵治亚缪锡根李春来
Owner KUANG CHI INST OF ADVANCED TECH
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