CN104334006A - Metamaterial and equipment - Google Patents
Metamaterial and equipment Download PDFInfo
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- CN104334006A CN104334006A CN201310309366.2A CN201310309366A CN104334006A CN 104334006 A CN104334006 A CN 104334006A CN 201310309366 A CN201310309366 A CN 201310309366A CN 104334006 A CN104334006 A CN 104334006A
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Abstract
The invention provides a metamaterial and a set of equipment. The metamaterial comprises at least one substrate layer, at least one structural layer which is arranged on the substrate, and a reflecting layer which covers the surface of the substrate. The structural layer comprises a plurality of conductive geometrical structures. The substrate is tubular. Because the metamaterial is made of a wave-absorbing meta-material which is provided with the substrate and the reflecting layer that is adhibited on the substrate. Through a cyclic process which comprises absorbing of electromagnetic wave by the structural layer on the substrate, reflection of the reflecting layer to the non-absorbed electromagnetic wave and re-absorbing of the structural layer to the electromagnetic wave, good wave absorbing performance of the metamaterial is realized, and therefore the equipment with the metamaterial has high wave absorbing performance.
Description
Technical field
The present invention relates to a kind of Meta Materials and there is the equipment of this Meta Materials.
Background technology
Meta Materials is a kind of novel artificial electromagnetic material, comprises substrate and is arranged in the conduction geometry of substrate surface or inside regularly, and this conduction geometry can produce response to incident electromagnetic wave electric field and/or magnetic field.The pattern and/or the size that change conduction geometry can change the response of this place to incident electromagnetic wave.The conduction geometry often put by designing material is made the dielectric constant of material each point and magnetic permeability all identical or different thus makes the dielectric constant of material monolithic and magnetic permeability be certain rule arrangement, magnetic permeability and the dielectric constant of rule arrangement can make material have response macroscopically to electromagnetic wave, such as, converge electromagnetic wave, divergent electromagnetic ripple etc.
In view of the designability that Meta Materials is good to electromagnetic wave, it has potential application prospect on rubber-ferrite or wave transparent.But the artificial geometry that on the substrate that existing Meta Materials is mainly plate shaped, periodic arrangement is certain, realize electromagnetic wave through functions such as the convergence after Meta Materials, expansion, orientations by the artificial geometry arrangement after design optimization, can not realize inhaling wave energy.
Summary of the invention
The object of the invention is to provide a kind of Meta Materials, is intended to make this Meta Materials have good absorbing property.
The invention provides a kind of Meta Materials, described Meta Materials comprises the reflector that at least one deck base material, at least one deck are arranged on the structure sheaf on described base material and cover on described substrate surface, described structure sheaf comprises multiple conduction geometry, and described base material is tubulose.
Further, described conduction geometry is the structure with geometry that electric conducting material is made.
Further, the dielectric material that described base material is greater than 1 by dielectric constant is made.
Further, described dielectric material is semiconductor or insulator.
Further, described reflector is conductive layer.
Further, described reflector is metal level.
Further, described Meta Materials also comprises the conductive ink layer spread on one of them substrate surface.
Further, described base material comprises: ground floor base material, is covered on described reflector; Second layer base material, is arranged at the side away from described reflector of described ground floor base material, and described conductive ink layer is between described ground floor base material and described second layer base material.
Further, described base material is the prepreg that resin matrix and fibre reinforcement are made.
Further, the axis of described tubular substrate is curve.
The invention still further relates to a kind of equipment, comprise the above-mentioned Meta Materials on equipment body and described equipment body.
According to Meta Materials of the present invention and equipment, because Meta Materials itself is made by having the suction ripple Meta Materials of base material with the reflector be covered on base material, can by structure sheaf on base material to electromagnetic absorption, reflector to unabsorbed electromagnetic reflection, structure sheaf to electromagnetic resorbent cyclic process, realize the good absorbing property of Meta Materials, thus the equipment with this Meta Materials also can have very high absorbing property.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is structure according to the pipeline of the embodiment of the present invention and operation principle schematic diagram;
Fig. 2 is the structural representation of the suction ripple Meta Materials adopted according to the pipeline of the embodiment of the present invention.
Wherein, each Reference numeral representative: 100, Meta Materials; 11, conductive ink layer; 12, electrically conductive ink structure sheaf; 13, structured metal layer; 21, ground floor base material; 22, second layer base material; 23, third layer base material; 24, the 4th layer of base material; 30, reflector.
Embodiment
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1, the Meta Materials 100 of the present embodiment is made up of suction ripple Meta Materials.Inhale ripple Meta Materials and comprise suction ripple main body and reflector 30, inhale ripple main body and comprise at least one deck base material and at least one Rotating fields layer.Each structure sheaf is separated by base material, and every Rotating fields layer comprises multiple regularly arranged conduction geometry.Reflector 30 is preferably disposed on the outermost layer of Meta Materials 100, is covered on the outside of inhaling ripple main body.Reflector also can be arranged on one of them substrate surface, but all structure sheafs all should be positioned at the same side in reflector.
In the present invention, base material adopts non electrically conductive material or poor conductor material to make, such as insulator or semiconductor.Preferably its dielectric constant is greater than 1, such as epoxy resin, polytetrafluoroethylene, pottery etc., or can have dielectric constant higher comparatively speaking.As shown in Figure 1, base material is tubulose, make Meta Materials 100 cross section of the present embodiment for circular, axis be curve.Its cross section also can be square, trapezoidal or other shapes, and axis also can be curve.Under a kind of application state, Meta Materials 100 can be air intake duct.
Conduction geometry is the structure with plane geometric shape be made up of electric conducting material, and electric conducting material can be metal or alloy, also can be nonmetallic conductive material.Here metal is copper, silver, gold or copper alloy etc. such as, and nonmetallic materials are electrically conductive ink, indium tin oxide etc. such as.
Wherein, designed by the structure often put material, make the dielectric constant of material each point and magnetic permeability all identical or different, thus make the dielectric constant of material monolithic and magnetic permeability be certain rule arrangement, magnetic permeability and the dielectric constant of rule arrangement can make material have response macroscopically to electromagnetic wave, and the material of such magnetic permeability and dielectric constant with rule arrangement is referred to as Meta Materials.Namely the present invention make use of meta-material principle, aim at Meta Materials and devise a kind of suction ripple Meta Materials, the suction ripple main body of this suction ripple Meta Materials is arranged on reflector 30, and inhale the structure sheaf that ripple main body comprises base material and formed at the multiple conduction geometries of substrate surface arrangement, thus Meta Materials 100 can be formed by the suction ripple Meta Materials with absorbing property.
Wherein reflector 30 can be covered on by modes such as plating, sputtering or hot pressing and inhale ripple main body.The Main Function in reflector 30 is reflection of electromagnetic wave unabsorbed in Fig. 1 to other wall of Meta Materials 100 will make electromagnetic wave again by suction ripple absorbent body on the one hand.The higher reflector of intensity 30 is set on the other hand and also can increases the mechanical strength of inhaling ripple Meta Materials, thus meet the requirement of strength of Meta Materials 100 preferably.
As shown in Figure 1, when Meta Materials 100 inner surface is subject to incident electromagnetic wave W1 irradiation, the suction ripple main body making the suction ripple Meta Materials of Meta Materials 100 can absorb incident electromagnetic wave W1, unabsorbed part electromagnetic wave by reflective layer reflects to Meta Materials 100 opposite side wall continues by suction ripple absorbent body, by reflective layer reflects, each absorption all can reach the effect significantly reducing electromagnetic scattering.During to Meta Materials 100 downstream, the incident electromagnetic wave W1 being incident to Meta Materials 100 is absorbed completely through multiple reflections with after absorbing.
Fig. 2 shows the concrete structure of the suction ripple Meta Materials of the Meta Materials of the present embodiment.
As shown in Figure 2, preferably inhale ripple main body in the present embodiment and comprise double-layer structure layer, be respectively structured metal layer 13 and electrically conductive ink structure sheaf 12.Wherein, the conduction geometry of structured metal layer 13 is metal metal structure; The conduction geometry of electrically conductive ink structure sheaf 12 is the electrically conductive ink structure that electrically conductive ink is made.This is because Meta Materials 100 is irregular curve shapes, therefore adopts the form of metal conduction geometry to form suction ripple Meta Materials completely and is difficult to ensure absorbing property.
Further preferably, structured metal layer is placed on outermost layer, and electrically conductive ink micro-structural is placed on intermediate layer.Because the conduction geometry of electrically conductive ink structure sheaf is liquid condition, the conduction geometry of structured metal layer is solid state.Meta Materials is bending, and conduction geometry is placed on intermediate layer and conduction geometry can be caused more easily deformation to occur thus produce certain influence to the wave-absorbing effect preset, and the conduction geometry of electrically conductive ink structure sheaf then there will not be the problem of deformation.Adopt the conduction geometry of above two kinds of unlike materials and the position relationship of each material conduction geometry, the wave-absorbing effect of the multi-layer metamaterial of curved surface shaped can be realized better.
Further, the suction ripple main body of the present embodiment also comprises conductive ink layer 11.Wherein, conductive ink layer 11 is between two-layer base material, and conductive ink layer 11 is dispersed throughout on a surface of one deck base material in two-layer base material.Conductive ink layer 11 makes Meta Materials 100 except utilizing the principle of inhaling ripple Meta Materials to inhale except ripple, also uses touch screens principle and carries out suction ripple, can strengthen the wave-absorbing effect of Meta Materials 100 further.
Inhale ripple main body in the present embodiment and comprise ground floor to the 4th layer of totally four layers of base material.
Reflector 30 is covered on ground floor base material 21.Second layer base material 22 is arranged at the side away from reflector 30 of ground floor base material 21.Conductive ink layer 11 is between ground floor base material 21 and second layer base material 22.Conductive ink layer 11 can be arranged at the apparent surface of ground floor base material 21 and second layer base material 22 any one on the surface.
Third layer base material 23 is arranged at the side away from ground floor base material 21 of second layer base material 22.Electrically conductive ink structure sheaf 12 is between second layer base material 22 and third layer base material 23.Electrically conductive ink structure sheaf 12 can be arranged at the apparent surface of second layer base material 22 and third layer base material 23 any one on the surface.
4th layer of base material 23 is arranged at the innermost layer of Meta Materials 100.Conduction geometry is between third layer base material 23 and the 4th layer of base material 24.Structured metal layer 13 can be arranged at the apparent surface of third layer base material 23 and the 4th layer of base material 24 any one on the surface.
In the present embodiment, base material is the prepreg that resin matrix and fibre reinforcement are made.Base material adopts prepreg to be because prepreg can make base material and conduction geometry or electrically conductive ink micro-structural one-body molded, thus makes the mechanical performance of Meta Materials 100 stronger.
Above embodiment should not be construed as limiting the invention.Such as, the conduction geometry in the present embodiment in structured metal layer and the conduction geometry in electrically conductive ink structure sheaf can be all sheet.But, conduction geometry in structured metal layer can also be the various forms of conduction geometries in existing suction ripple Meta Materials, the conduction geometry etc. such as, shown in CN200580029498.3 and CN200810236471.7 all can adopt, and responds as long as conduction geometry can produce electromagnetic electric field or magnetic field.
The present invention also protects the equipment with above-mentioned Meta Materials, and this equipment can be the equipment that various surface or other local need wave-sucking performance, it Meta Materials comprising equipment body and be arranged on this equipment body, relate to above.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
On the one hand, arrange on Meta Materials surface or inside the reflector covering certain surface area, simultaneously base material is tubulose, makes electromagnetic wave immerse tubular substrate inner, and meeting multiple reflections back and forth in pipeline, thus consumed energy, play wave-absorbing effect;
On the other hand, base material arranges the structure sheaf of multiple conduction geometry composition, utilize conduction geometry to carry out attenuates electromagnetic waves to electromagnetic response, wave-absorbing effect can be strengthened further;
Further, between base material, be coated with conductive ink layer, can wave-absorbing effect be strengthened; And electrically conductive ink is owing to being liquid, preparation is easier, also with any bending moulding of base material, can Simplified flowsheet, and enhance productivity;
In addition, the reflector that intensity is higher is set, also can improves the mechanical strength of inhaling ripple Meta Materials, thus meet the requirement of strength of Meta Materials preferably.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a Meta Materials, it is characterized in that, described Meta Materials comprises the reflector that at least one deck base material, at least one deck are arranged on the structure sheaf on described base material and cover on described substrate surface, and described structure sheaf comprises multiple conduction geometry, and described base material is tubulose.
2. Meta Materials according to claim 1, is characterized in that, described conduction geometry is the structure with geometry that electric conducting material is made.
3. Meta Materials according to claim 1, is characterized in that, the dielectric material that described base material is greater than 1 by dielectric constant is made.
4. Meta Materials according to claim 3, is characterized in that, described dielectric material is semiconductor or insulator.
5. Meta Materials according to claim 1, is characterized in that, described reflector is conductive layer.
6. Meta Materials according to claim 5, is characterized in that, described reflector is metal level.
7. Meta Materials according to claim 1, is characterized in that, described Meta Materials also comprises the conductive ink layer (11) spread on one of them substrate surface.
8. Meta Materials according to claim 7, is characterized in that, described base material comprises:
Ground floor base material (21), is covered on described reflector (30);
Second layer base material (22), is arranged at the side away from described reflector (30) of described ground floor base material (21), and described conductive ink layer (11) is positioned between described ground floor base material (21) and described second layer base material (22).
9. Meta Materials according to any one of claim 1 to 8, is characterized in that, described base material is the prepreg that resin matrix and fibre reinforcement are made.
10. Meta Materials according to any one of claim 1 to 8, is characterized in that, the axis of described tubular substrate is curve.
11. 1 kinds of equipment, is characterized in that, comprise on equipment body and described equipment body, as described in any one of claim 1 to 10 Meta Materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310309366.2A CN104334006A (en) | 2013-07-22 | 2013-07-22 | Metamaterial and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310309366.2A CN104334006A (en) | 2013-07-22 | 2013-07-22 | Metamaterial and equipment |
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| CN104334006A true CN104334006A (en) | 2015-02-04 |
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| CN201310309366.2A Pending CN104334006A (en) | 2013-07-22 | 2013-07-22 | Metamaterial and equipment |
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Cited By (3)
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| CN106332533A (en) * | 2015-07-10 | 2017-01-11 | 深圳光启尖端技术有限责任公司 | Wave-absorbing metamaterial |
| CN106329149A (en) * | 2015-07-10 | 2017-01-11 | 深圳光启尖端技术有限责任公司 | Wave-absorbing material |
| CN110380228A (en) * | 2019-07-23 | 2019-10-25 | 中国科学技术大学 | A kind of wave absorbing device part based on reflectionless filter principle |
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Application publication date: 20150204 |