CN102480010B - Inhomogeneous metamaterial - Google Patents
Inhomogeneous metamaterial Download PDFInfo
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- CN102480010B CN102480010B CN 201110109034 CN201110109034A CN102480010B CN 102480010 B CN102480010 B CN 102480010B CN 201110109034 CN201110109034 CN 201110109034 CN 201110109034 A CN201110109034 A CN 201110109034A CN 102480010 B CN102480010 B CN 102480010B
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Abstract
The invention provides an inhomogeneous metamaterial which comprises a plurality of arrayed metamaterial functional plates, wherein each metamaterial functional plate comprises a dielectric substrate and a plurality of artificial micro structures arranged on the dielectric substrate, the dielectric substrate comprises a plurality of substrate units made of different materials, thicknesses of the substrate units are inhomogeneously distributed, and dielectric constants of the dielectric substrate are inhomogeneously distributed. The invention has the advantages that: through designing the dielectric substrate into the substrate units with different materials and different thicknesses, the metamaterial has inhomogeneous dielectric constant distribution, and more function applications are provided for the metamaterial.
Description
[technical field]
The present invention relates to super material field, relate to a kind of super material with non-homogeneous dielectric constant particularly.
[background technology]
Super material is generally folded by a plurality of super material function flaggies or is formed by other rule array combination, super material function plate comprises medium substrate and the array a plurality of artificial micro-structural on medium substrate, the medium substrate of existing super material is the organic or inorganic substrate of uniform material, as FR4, TP1 etc.The a plurality of artificial micro-structural of array on medium substrate has specific electromagnetic property, can produce electromagnetic response to electric field or magnetic field, accurately design and control by structure and arrangement regulation to artificial micro-structural, can make super material present the electromagnetic property that various general material does not have, if can converge, disperse and deviation electromagnetic wave etc.Existing medium substrate is as the fixing base of artificial micro-structural, owing to have dielectric constant and the magnetic permeability of homogeneous on the whole, so can not produce distinctive response to electric field or magnetic field, namely for whole super material, medium substrate does not have the electromagnetism modulation function.
[summary of the invention]
Technical problem to be solved by this invention is: the medium substrate that overcomes existing super material lacks the shortcoming of function, provide a kind of medium substrate to have the super material that non-homogeneous dielectric constant distributes, make super material in the function expansion that is applied by the dielectric constant that changes the medium substrate part.
The present invention realizes that the technical scheme that goal of the invention adopts is, a kind of non-homogeneous super material, the super material function plate that comprises a plurality of arrays, described super material function plate comprises medium substrate and the array a plurality of artificial micro-structural on medium substrate, described medium substrate is made up of the base board unit of a plurality of different materials, and the thickness of described a plurality of base board units is non-uniform Distribution.
Super material is as a kind of new material that electromagnetic wave is had specific response and modulating characteristic, be to be combined by a plurality of super material function plate arrays, the medium substrate at artificial micro-structural and place thereof can be regarded the basic structural unit of forming super material function plate as, and the character of super material function plate depends primarily on electromagnetic property and the array rule of a plurality of basic structural units.The electromagnetic property of single basic structural unit is mainly determined by effective dielectric constant and the equivalent permeability of this basic structural unit, and the effective dielectric constant of single basic structural unit and equivalent permeability are by common decision of medium substrate institute at artificial micro-structural and place thereof.Existing design to super material function plate all is effective dielectric constant and the equivalent permeability that changes single basic structural unit by the structure that changes artificial micro-structural or size, at last a plurality of basic structural units are arranged according to certain rules, can make super material function plate form some specific electromagnetic property, as to electromagneticly converge, disperse, electromagnetism modulation function such as deviation and translation.
The present invention is for expanding the function design of super material function plate, is made up of the base board unit of a plurality of different materials by medium substrate is designed to, and the while thickness of each base board unit is non-uniform Distribution.On the one hand, because material difference, so dielectric constant difference in each base board unit, on the other hand, because the thickness difference of each base board unit, for the super material basic structural unit in each base board unit, the ratio of its medium substrate is with difference, and the change of this ratio can change the effective dielectric constant of super material basic structural unit.Therefore, by adopting super material medium substrate of the present invention, the local dielectric constant that can change whole super material makes super material in the function expansion that is applied.
During concrete enforcement, the shape of described base board unit can design arbitrarily as required, decide to intend changing the target area shape of its dielectric constant, as embodiment, base board unit can be designed to a plurality of back-shaped structures or cirque structure, after a plurality of back-shaped structures or cirque structure are formed medium substrate, owing to different base board units is different materials and has different thickness, so the dielectric constant of whole medium substrate is distribution heterogeneous.
As embodiment, the big I of dielectric constant of a plurality of back-shaped structures or cirque structure elementary cell increases by gradient or reduces, and also can be size and be alternately distributed.
The invention has the beneficial effects as follows, formed by the base board unit of different materials and different-thickness by medium substrate is designed to, make super material have dielectric constant heterogeneous and distribute, for super material provides more rich functions application.
[description of drawings]
Fig. 1, the structural representation of super material.
Fig. 2, the plan view of the medium substrate of embodiment 1.
Fig. 3, the A-A cutaway view of Fig. 2.
Fig. 4, the plan view of the medium substrate of embodiment 2.
Fig. 5, the B-B cutaway view of Fig. 4.
[embodiment]
The present invention is described in detail below in conjunction with drawings and Examples.
The structural representation of super material is referring to accompanying drawing 1, comprise a plurality of stacked super material function plates 100, super material function plate 100 comprises medium substrate 101 and the array a plurality of artificial micro-structural 102 on medium substrate, artificial micro-structural 102 can be regarded a super material basic structural unit as with the medium substrate at its place, is similar to the lattice in the crystal.Accompanying drawing 1 is the local enlarged diagram of super material microstructure, and to be the basic structural unit of counting the order of magnitude by material molecule form according to the rule array of arranging of artificial design actual super material.The structure of the artificial micro-structural 102 in the accompanying drawing 1 is " worker " font structure, as embodiment, can also adopt the I-shaped derivative type.
The present invention adopts following examples to implement:
Embodiment 1
Hence one can see that, by the thickness that changes back-shaped base board unit 103 material different with selection, can make the dielectric constant of super material be non-uniform Distribution, thereby the function design that is reached for super material provides the more purpose of design flexible mode.
In the present embodiment, the size of the dielectric constant of back-shaped base board unit 103 is increased progressively to the center by the periphery, can select suitable material from ceramic base material, plastic resin base material or composite material base neatly, make different back-shaped base board units 103 adopt different materials to arrange according to the size of dielectric constant, distribute thereby make super material have dielectric constant heterogeneous on the whole.
The size, quantity and the thickness that should be appreciated that back-shaped base board unit 103 in the present embodiment can design arbitrarily as required, to satisfy the electromagnetic property requirement of super material.And, the dielectric constant size of each back-shaped base board unit 103 increases progressively just the present invention for convenience of explanation by the periphery and the special case that exemplifies in the present embodiment to the center, during concrete enforcement, the rule of arranging of the dielectric constant size of each back-shaped base board unit 103 also needs to decide according to predetermined super material electromagnetic property, main idea of the present invention also is to adopt different materials and different-thickness to provide a kind of design approach for the electromagnetic property of super material by each back-shaped base board unit 103, and make up by the arrange design of rule of artificial micro-structural on this design approach and the super material function plate, with the purpose of the function design approach that reaches the super material of expansion.
Embodiment 2
As another kind of distortion of the present invention, present embodiment is designed to medium substrate 101 to include the annular base board unit 104 of a plurality of different materials, the plan view of medium substrate is referring to accompanying drawing 4, Fig. 5 is the B-B cutaway view of Fig. 4, wherein, each annular base board unit 104 adopts two kinds of different materials, the dielectric constant of two kinds of materials is size and is alternately distributed, this two kinds of different materials have been represented with two kinds of different packed densities among Fig. 5, wherein, the dielectric constant of the expression material that packed density is big is big, and the dielectric constant of the expression material that packed density is little is little, and the thickness of each annular base board unit 104 of while also is thickness and is alternately distributed.Because the electromagnetic property of super material is to be determined by the effective dielectric constant of a plurality of super material basic structural units and equivalent permeability, and the effective dielectric constant of single basic structural unit and equivalent permeability are by 101 common decisions of medium substrate at artificial micro-structural 102 and place thereof, so, when each annular base board unit 104 adopts different materials, be equivalent to change the dielectric constant in each different substrate unit on the medium substrate 101, the effective dielectric constant of the basic structural unit in each annular base board unit 104 finally makes super material function plate 100 have different dielectric constants in zones of different and distributes along with the difference of annular base board unit 104 under it also will be changed.Simultaneously, be that thickness is alternately distributed with the Thickness Design of each annular base board unit 104, for the super material basic structural unit in each annular base board unit 104, the thickness difference of annular base board unit 104, in the super material basic structural unit medium substrate 101 occupy ratio with difference, so the effective dielectric constant that the super material basic structural units in each annular base board unit 104 show also can be different.
In the present embodiment, making the dielectric constant of annular base board unit 104 be size is alternately distributed, on the one hand, can select two kinds of different materials, and the annular base board unit 104 of two kinds of different materials is alternately arranged, thereby making super material have dielectric constant heterogeneous on the whole distributes, simultaneously, for being size, the dielectric constant that makes annular base board unit 104 better is alternately distributed, be that thickness is alternately distributed with the Thickness Design of each annular base board unit 104, make thickness be alternately distributed with material be alternately distributed generation to the stack of the effect of dielectric constant, design will be more flexible.
The size, quantity and the thickness that should be appreciated that annular base board unit 104 in the present embodiment can design arbitrarily as required, to satisfy the electromagnetic property requirement of super material.And, the dielectric constant of each annular base board unit 104 size replaces the special case of arranging just the present invention for convenience of explanation and exemplifying in the present embodiment, during concrete enforcement, the rule of arranging of the dielectric constant size of each annular base board unit 104 also needs to decide according to predetermined super material electromagnetic property, main idea of the present invention also is to adopt different materials and different thickness to provide a kind of design approach for the electromagnetic property of super material by each annular base board unit 104, and make up by the arrange design of rule of artificial micro-structural on this design approach and the super material function plate, with the purpose of the function design approach that reaches the super material of expansion.
Need to prove that at last the back-shaped base board unit among the present invention or annular base board unit are one of embodiment all, the region shape of base board unit can design arbitrarily as required.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (8)
1. non-homogeneous super material, the super material function plate that comprises a plurality of arrays, described super material function plate comprises medium substrate and the array a plurality of artificial micro-structural on medium substrate, it is characterized in that: described medium substrate is made up of the base board unit of a plurality of different materials, and described medium substrate includes the base board unit of a plurality of back-shaped structures or cirque structure, and the thickness of the base board unit of each back-shaped structure or the base board unit of cirque structure is increased to the center, reduces or is alternately distributed by periphery on the cross section of medium substrate.
2. non-homogeneous super material according to claim 1 is characterized in that: the dielectric constant of the base board unit of described a plurality of back-shaped structures increases by gradient or reduces.
3. non-homogeneous super material according to claim 1, it is characterized in that: the dielectric constant of the base board unit of described a plurality of back-shaped structures is size and is alternately distributed.
4. non-homogeneous super material according to claim 1 is characterized in that: the dielectric constant of the base board unit of described a plurality of cirque structures increases by gradient or reduces.
5. non-homogeneous super material according to claim 1, it is characterized in that: the dielectric constant of the base board unit of described a plurality of cirque structures is size and is alternately distributed.
6. according to the arbitrary described non-homogeneous super material of claim 1 to 5, it is characterized in that: the material of described base board unit is ceramic base material, plastic resin base material or composite material base.
7. non-homogeneous super material according to claim 6, it is characterized in that: described artificial micro-structural is the artificial micro-structural of metal.
8. non-homogeneous super material according to claim 7, it is characterized in that: the artificial micro-structural of described metal is I shape or I-shaped derivative type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109034 CN102480010B (en) | 2011-04-28 | 2011-04-28 | Inhomogeneous metamaterial |
| PCT/CN2011/084435 WO2012129941A1 (en) | 2011-03-25 | 2011-12-22 | Metamaterial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109034 CN102480010B (en) | 2011-04-28 | 2011-04-28 | Inhomogeneous metamaterial |
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| Publication Number | Publication Date |
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| CN102480010A CN102480010A (en) | 2012-05-30 |
| CN102480010B true CN102480010B (en) | 2013-09-25 |
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| CN 201110109034 Active CN102480010B (en) | 2011-03-25 | 2011-04-28 | Inhomogeneous metamaterial |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009078596A1 (en) * | 2007-12-14 | 2009-06-25 | Electronics And Telecommunications Research Institute | Metamaterial structure having negative permittivity, negative permeability, and negative refractivity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0786827A (en) * | 1993-09-17 | 1995-03-31 | Nippon Valqua Ind Ltd | Dielectric resin electromagnetic lens and production thereof |
| US6943731B2 (en) * | 2003-03-31 | 2005-09-13 | Harris Corporation | Arangements of microstrip antennas having dielectric substrates including meta-materials |
| EP2933225A1 (en) * | 2004-07-23 | 2015-10-21 | The Regents of The University of California | Metamaterials |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009078596A1 (en) * | 2007-12-14 | 2009-06-25 | Electronics And Telecommunications Research Institute | Metamaterial structure having negative permittivity, negative permeability, and negative refractivity |
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