Preparation method of metamaterial and metamaterial

Abstract

The invention provides a preparation method of a metamaterial and the metamaterial, wherein the dielectric constant and the magnetic conductivity of the metamaterial can be set flexibly in the preparation method. The metamaterial prepared by the method is formed by combining multiple layers of metamaterial functional plates. Each of the metamaterial functional plates comprises a dielectric substrate and a plurality of artificial microstructures arranged in arrays on the dielectric substrate. Integrally formed materials are formed among the metamaterial functional plates. The integrally formedmaterials are prepared by a sol-gel process. By means of the preparation method of the metamaterial and the metamaterial provided by the invention, the dielectric constant and the magnetic conductivity of the metamaterial can be designed flexibly, and wider material selectivity is realized, so that the functional application range of the metamaterial is greatly expanded.

Description

【Technical field】 [0001] The invention relates to the field of metamaterials, in particular to composite preparation technology of supermaterials. 【Background technique】 [0002] The so-called 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, the limitations of some apparent natural laws can be broken through, so as to obtain ordinary supernormal material functions beyond the inherent nature. For example, metamaterials are formed by stacking or arraying multiple layers of metamaterial functional plates. Metamaterial functional plates are composed of a dielectric substrate and multiple metal microstructures arranged on the dielectric substrate. Metamaterials can provide various common materials with and without material properties. The size of a single metal microstructure is genera...

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Problems solved by technology

Moreover, metal microstructures can have artificially designed electromagnetic parameters, resulting in many novel phenomena

[0003] The artificial microstructures of the existing metamaterial functional boards are generally arrayed on the surface or inside of the dielectric substrate, and the metamaterial functional boards of each layer are closely combined to form the entire metamaterial, and the equivalent dielectric constant or equivalent magnetic permeability of each unit is the medium The superposition of the dielectric constant or magnetic permeability of the substrate and the artificial microstructure, because the selection of the dielectric substrate is limited by the functional application of the metamaterial, the selectivity of the dielectric constant and magnetic permeability is limited, so it can only be changed by changing Artificial microstructures are used to change the equivalent permittivity or equivalent permeability of the entire metamaterial. Although artificial microstructures can produce specific responses to electromagnetic waves through specific arrangement rules, they cannot affect a wide range. The permittivity and permeability of the entire metamaterial, so the design of the overall permittivity and permeability of the entire metamaterial is still not flexible enough and has many limitations

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