Method for designing grid structure artificial material by modulating plasma frequency

Abstract

A method for designing lattice structured artificial materials by modulating the plasma frequency is characterized in that the processes comprise: (1) assuming that the plasma frequency of the required artificial material is Omega, (2) choosing metal wire materials to constitute a grid cell structure, (3) obtaining the relation among the plasma frequency, the section girth of the metal wire and the area of a grid cell according to the formula, (4) obtaining a required plasma frequency by choosing the section girth of the metal wire and the area of one face of the grid cell, (5) determiningthe size of the metal wire according to the specific shape of the cross section of the metal wire, (6) determining the number of the grid cell and the arrangement of the whole lattice structure, and (7) obtaining required materials from processing by utilizing the prior art. The method of the invention is simple in structure, the requirements on design can be met by using a simple formula, and one plasma frequency can be provided with a plurality of combinations, thereby meeting requirements and broadening the range for selecting preparing methods.

Description

technical field [0001] The invention relates to a method for designing artificial materials, in particular to a method for designing required periodic grid structure artificial materials by modulating the plasma frequency ωp. Background technique [0002] Artificial electromagnetic materials have strange electromagnetic properties that are not found in natural substances. These strange electromagnetic properties and their potential applications have attracted extensive attention from the scientific and industrial circles. The main materials include left-handed materials, negative refractive index materials, and negative magnetic permeability materials. It can be used in many fields such as super-resolution imaging and ultra-high directional directional radiation. Usually, the basic way to realize artificial materials includes the adjustment of their permittivity ε and magnetic permeability μ, because ϵ = 1 - ω ...

AI Technical Summary

Problems solved by technology

In 1996, Pendry et al. proposed that periodically arranged thin metal wires can effectively adjust the plasma frequency of artificial electromagnetic materials, thereby effectively changing the dielectric constant of the material and obtaining the required artificial electromagnetic materials; this method can only design circular However, in practical applications, due to the limitation of processing technology and the diversity of processing methods, the form of metal wire cross-section is complicated, and there is no very effective method to design the plasma of any metal wire cross-section periodic structure material. bulk frequency to achieve the required artificial material

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