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Preparing method of metamaterials

A technology of metamaterials and dielectric materials, applied in the field of metamaterials, can solve the problems that the conduction loss is not applicable to infrared and optical frequency bands, and can not realize negative refractive index relatively freely, and achieve the effect of negative refractive index

Active Publication Date: 2014-07-23
KUANG CHI INST OF ADVANCED TECH +1
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  • Application Information

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Problems solved by technology

The microstructure of metamaterials is mainly a metal resonant ring, but it is not suitable for infrared and optical frequency bands due to conduction loss
[0003] In the prior art, high dielectric materials or magnetoelectric materials are used as microstructures to prepare metamaterials, but single high dielectric materials or high magnetic permeability materials can only provide negative effective permittivity or negative effective magnetic properties. Due to the limitation of the permittivity or the singleness of the magnetic permeability, the negative refractive index cannot be freely realized

Method used

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Embodiment 1

[0024] see figure 2 , is a flowchart of a method for preparing a metamaterial provided in Embodiment 1 of the present invention, and the method includes:

[0025] S21: Mixing the dielectric material and the ferrite material according to a preset ratio to form a magnetoelectric material. The ratio of the specific dielectric material and ferrite material can be obtained according to the effective electromagnetic parameter logarithmic calculation formulas (1) and (2) of the composite medium:

[0026] lnε=v 1 lnε 1 +v 2 lnε 2 (1)

[0027] lnμ=v 1 lnμ 1 +v 2 lnμ 2 (2)

[0028] Where ε, μ are the permittivity and permeability of the hybrid magnetoelectric material, ε 1 , μ 1 is the permittivity and permeability of the dielectric material, ε 2 , μ 1 is the permittivity and permeability of ferrite, v 1 , v 2 is the volume ratio of dielectric material to ferrite and v 1 +v 2 =1.

[0029] For example, the dielectric constant of the substrate material is 2.8, and...

Embodiment 2

[0041] see image 3 , is a flowchart of a method for preparing a metamaterial provided in Embodiment 2 of the present invention, and the method includes:

[0042] S31 to S36 in this embodiment are the same as S21 to S26 in Embodiment 1, and will not be repeated here. On the basis of Embodiment 1, this embodiment also includes:

[0043] S37: Laminating at least two spliced ​​first substrates and second substrates to obtain a composite material with a three-dimensional structure with ceramic microspheres as microstructures.

[0044] Specifically, at least two spliced ​​first substrates and second substrates can be laminated by using an adhesive to obtain a three-dimensional composite material with ceramic microspheres as microstructures.

[0045] Wherein, the dielectric constant of the ceramic microsphere is greater than that of the second substrate material.

[0046] In this embodiment, the spherical cavity obtained by splicing the first substrate and the second substrate is ...

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Abstract

An embodiment of the invention provides a preparing method of metamaterials, which includes: mixing dielectric materials and ferrite materials in preset proportion to form magneto-electric materials, manufacturing the magneto-electric materials into ceramic microspheres through a stamping mode, and leading the ceramic microspheres to be embedded into preset base materials to obtain the metamaterials. In the preparing method, the ceramic microspheres made of the magneto-electric materials are filled in the base materials, dielectric constant and resonance of magnetic conductivity can be led to fall in the same frequency interval, and therefore negative refraction index is achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of metamaterials, in particular to a preparation method of metamaterials. 【Background technique】 [0002] Currently commonly used materials are based on the improvement and improvement of the original properties of natural materials, but with the continuous improvement of material design and preparation, the space for further improvement of various properties and functions of natural materials is getting smaller and smaller. Based on this status quo, some composite materials with extraordinary physical properties that natural materials do not possess, such as metamaterials, are produced. People can achieve various physical properties by modulating the structure and key physical scales of various levels of materials, and obtain physical properties that are not possessed by ordered, disordered, or unstructured materials at this level or scale in nature. The microstructure of metamaterials is mainly a metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q15/02
Inventor 刘若鹏赵治亚李春来
Owner KUANG CHI INST OF ADVANCED TECH
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