Metamaterial substrate and preparation method thereof

Abstract

The invention provides a metamaterial substrate and a preparation method thereof. A metamaterial substrate with hollow microspheres is prepared by using a microsphere foaming agent, and the density and dielectric constant of the substrate are reduced by introducing air; a material with thermoplastic polymer as a main body is used as the substrate, which has a light mass, a small dielectric constant, low loss, and wide application fields when compared with hard ceramic materials; By controlling the ratio of the microsphere foaming agent and selecting microsphere foaming agents with different expansion ratios, metamaterial substrates with different dielectric constants can be prepared, and the application is expanded.

Description

【Technical field】

[0001] The invention relates to the field of metamaterials, in particular to a substrate and a preparation method of a metamaterial. 【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 and split-ring resonators (SRR) can ...

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