Double-layer heterostructured microwave-infrared-compatible metamaterials based on rhombic primitives
A double-layer heterogeneous, metamaterial technology, applied in the field of metamaterials, can solve problems such as restricting the development of compatible materials and incompatible properties, and achieve the effect of enhancing electromagnetic wave absorption and having broad prospects.
Active Publication Date: 2022-02-08
DALIAN UNIV OF TECH
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These two properties are difficult to be compatible in the same material, which restricts the development of compatible materials
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[0014] like figure 1 , figure 2 , image 3 Shown: a quasi-periodic ordered metamaterial based on rhombic primitives, figure 1 It is a schematic diagram of the arrangement of the underlying diamond-shaped quasi-periodic unit sequence, and its arrangement has rotational symmetry, but not translational symmetry, so it is a quasi-periodic arrangement.
[0015] Further, the present invention carries out double-layer sequential arrangement, further realizing enhanced wave-absorbing performance and compatibility. figure 2 It is a schematic diagram of the basic sequence structure of the bottom layer and the top layer. The bottom layer adopts the Penrose quasi-periodic jigsaw puzzle layout method. It is a typical quasi-periodic sequence structure. Domain symmetry and global symmetry are different from slabs and periodically ordered materials, so the interaction with microwaves can introduce the above-mentioned new effects to enhance the absorption performance. In this quasi-perio...
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Abstract
The invention discloses a double-layer heterogeneous sequenced microwave infrared-compatible metamaterial based on diamond-shaped primitives, which includes upper and lower layers. The primitives can be arranged in the form of periodic or quasi-periodic ordering, and the shape of the primitives is a diamond-shaped protrusion. The function of the underlying diamond-shaped unit is to absorb microwaves, which can have better performance than flat plates and periodically ordered microwave-absorbing materials with the same composition ratio and the same thickness. The function of the top-layer primitive is to enhance microwave absorption and reflect infrared waves at the same time, which can reduce the infrared emissivity of the material while being compatible with the microwave absorption performance of the bottom layer. The underlying rhombus primitives come in two sizes. The material of the rhombus base element at the bottom layer is a mixture of powder and resin with microwave absorption properties, and the material of the rhombus base element at the top layer is metal or non-metal material with high electrical conductivity.
Description
technical field [0001] The invention relates to a metamaterial compatible with electromagnetic waves of two frequency bands, in particular to a double-layer heterogeneous sequenced microwave infrared compatible metamaterial based on a diamond-shaped primitive. Background technique [0002] Microwave technology provides human beings with the convenience of communication, satellite positioning, and radar detection, but it also brings new problems. For example, the wide application of microwave makes it a new source of pollution, causing adverse effects on human health. Therefore, it is necessary to develop new microwave absorbing materials to solve the above problems. In the specific application of microwave absorbing materials, the trend of integration requires that the material can obtain a wider electromagnetic wave absorption bandwidth at the thinnest possible thickness. Therefore, how to increase the absorption bandwidth without increasing the thickness of the material is...
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IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/00H01Q17/00
Inventor 段玉平黄灵玺庞慧芳马欣然雷浩
Owner DALIAN UNIV OF TECH