CN101866088B - Manufacture method of two-dimensional left-handed material based on plan periodic structure - Google Patents
Manufacture method of two-dimensional left-handed material based on plan periodic structure Download PDFInfo
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- CN101866088B CN101866088B CN 201010201091 CN201010201091A CN101866088B CN 101866088 B CN101866088 B CN 101866088B CN 201010201091 CN201010201091 CN 201010201091 CN 201010201091 A CN201010201091 A CN 201010201091A CN 101866088 B CN101866088 B CN 101866088B
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Abstract
The invention relates to a manufacture method of a two-dimensional left-handed material based on a plan periodic structure, belonging to the field of an electromagnetic material. The two-dimensional left-handed material comprises at least one of unit structures, which each unit structure consists of a dielectric medium material which is internally provided with at least one pair of parallel metal strips; the arranging directions of each pair of the parallel metal strips in the medium are coincident with each other; and the direction of an electric field of an external incident electromagnetic wave is parallel with the long edge of each metal strip, the direction of the magnetic field is parallel with or perpendicular to the plane of each metal strip, and the direction of the electric field and the direction of the magnetic field can realize the left-handed characteristic. The left-handed material designed by the method has a whole solid structure and can bear a certain outer force without deformation; the metal structure in the method is the parallel metal strips with the coincident arranging direction, has simple structure and is conveniently manufactured; and the method adopts the plane distribution of the metal structure to realize the two-dimensional characteristic of the left-handed material, and avoid the defects that the existing micromachining technology is hard in manufacturing a micro-nanometer structure and has high price when a space quadrature structure realizes the two-dimensional left-handed material.
Description
Technical field
The present invention relates to a kind of manufacture method of the two-dimensional left-handed material based on plan periodic structure, belong to the electromagnetic material field.
Background technology
Nineteen sixty-eight, USSR (Union of Soviet Socialist Republics) scientist V.G.Veselago has proposed the concept of left-handed materials (left-handed metamaterials, LHM) first, and it refers to that DIELECTRIC CONSTANT ε and magnetic permeability μ are negative a kind of material simultaneously in certain electromagnetic wave frequency range.2000, the people such as D.R.Smith in the San Diego of California, USA university branch school have constructed a kind of two-dimensional left-handed material for the first time on the Research foundation of Britain Imperial College of Science and Technology J.B.Pendry, its method is to adopt metal thin wire (Rod) array to realize the equivalent negative specific inductive capacity, adopt metal openings resonant ring (split ring resonator, SRR) realize the equivalent negative magnetic permeability, then these two kinds of arrays are mixed to arrange getting final product.Afterwards, various two-dimensional left-handed materials emerge in large numbers one after another.These two-dimensional left-handed materials adopt PCB circuit board printing technology mostly, metal thin wire and metal openings resonant ring are printed on respectively the both sides of PCB circuit board, then pcb board is cut into some structural units, and get up according to the mode permutation and combination of quadrature, can realize the left-handed materials of two dimension; Or directly adopt metal construction, build on the direction of two quadratures and realize two-dimensional left-handed material.Although all being far smaller than operation wavelength, the size of these structural units can be approximately uniform dielectric, but they can only regard a kind of space frame structure as, rather than real tangible media material, easily be subject to the impact of external force and be out of shape, thereby having influence on the stability of performance.In addition, along with the working frequency range of left-handed materials is moved to infrared light, visible light by microwave gradually, some special shape size of metal is difficult to processing, the structure of the arrangement mode realization two dimension of orthogonal space due to what adopt again, so further increased the difficulty of manufacture craft, thereby limited the application and development of left-handed materials.
Summary of the invention
The object of the present invention is to provide a kind of making simply and easily based on the manufacture method of the two-dimensional left-handed material of plan periodic structure.
Technical solution: two-dimensional left-handed material of the present invention comprises at least one cellular construction; Each cellular construction is to be made of the dielectric substance that inside includes at least one pair of parallel metal bar; Every pair of parallel metal bar orientation in medium is consistent; The direction of an electric field of outside incident electromagnetic wave is parallel to the long limit of bonding jumper, and magnetic direction is parallel or perpendicular to the plane of bonding jumper, can realize the two-dimensional left-handed material that is comprised of this cellular construction.
The effect that the present invention is useful:
The left-handed materials of the present invention design is structure of whole solid state, can bear certain external force and indeformable, can retention stable; Metal construction in the present invention is the consistent parallel metal bar of orientation, and is simple in structure, is convenient to processing; The present invention adopts the plane figure of metal construction to realize the two-dimensional characteristics of left-handed materials, is difficult to utilize existing micro-processing technology to prepare micro nano structure and expensive shortcoming when having avoided the orthogonal space structure to realize two-dimensional left-handed material.
Description of drawings
Fig. 1 is the structural principle schematic diagram of two-dimensional left-handed material of the present invention;
Fig. 2 is cellular construction figure of the present invention.
Embodiment
As shown in Figure 1, two-dimensional left-handed material of the present invention is by comprising at least one cellular construction; Each cellular construction is to be made of the dielectric substance that inside includes at least one pair of parallel metal bar;
Two-dimensional left-handed material of the present invention is the situation of 6 row * 4 row * 3 a layer cellular construction, each cellular construction as shown in Figure 2, it is included by inside, and the dielectric substance 1 of the consistent parallel metal bar 2 of the 2 pairs of orientations forms.Can be according to the size of required left-handed materials and the number of big or small selected cell structure of the structural unit of design in advance during practical application.When the direction of an electric field of outside incident electromagnetic wave is parallel to the long limit of bonding jumper in cellular construction, and magnetic direction is parallel or during perpendicular to the plane of bonding jumper, all can realize left hand characteristic, so just consisted of two-dimentional left-handed materials.As can be seen from Figure 1, in two-dimensional left-handed material of the present invention, all bonding jumpers are all arranged according to same mode, so can utilize the planar technology processing and manufacturing fully, have avoided the situation of stereoeffect complexity.
Drawn the situation of two pairs of bonding jumpers in Fig. 2.Electric resonance occurs between the bonding jumper of adjacent cells structure due to electric field produce negative permittivity, between the bonding jumper of magnetic field in same cellular construction, magnetic resonance occuring and produces negative magnetoconductivity, electrical resonance frequency and magnetic resonance frequencies are all relevant with the spacing of two bonding jumpers in the size of bonding jumper and the every pair of bonding jumper, so can be by adjusting size and the spacing setting unit structure of bonding jumper, negative permittivity frequency range and negative magnetoconductivity frequency range are overlapped, can realize left-handed materials.
Embodiment 1:
Be provided with two pairs of bonding jumpers in this routine cellular construction, wherein in the every pair of bonding jumper, the spacing w of two bonding jumpers as variable,, considers in the frequency range of 0-50GHz during from 0.2mm-0.8mm when the value of w, w is discussed on the impact of two-dimensional left-handed material left hand frequency range.The size of cellular construction is taken as 1mm, and medium is that relative dielectric constant is 4.4, relative permeability is 1, dielectric loss angle tangent is 0.02 FR4 material.Bonding jumper in structural unit is copper, and its size is 0.95mm * 0.2mm * 0.01mm, gets the situation of two pairs, to and between distance be 0.5mm.The left hand frequency range that this example produces sees Table one.
Table 1
In above embodiment 1, just considered the spacing w of two bonding jumpers in every pair of bonding jumper as variable, and in the situation of other parameter constants, the frequency range of the two-dimensional left-handed material of formation.In addition, in the size of the size of the size of bonding jumper, cellular construction, cellular construction specific inductive capacity used, cellular construction, the logarithm of bonding jumper used, the spacing of adjacent two pairs of bonding jumpers all can be selected according to actual needs and adjust.
Claims (1)
1. based on the manufacture method of the two-dimensional left-handed material of plan periodic structure, it is characterized in that: two-dimensional left-handed material comprises at least one cellular construction; Each cellular construction is to be made of the dielectric substance that inside includes at least one pair of parallel metal bar; Every pair of parallel metal bar orientation in medium is consistent; The direction of an electric field of outside incident electromagnetic wave is parallel to the long limit of bonding jumper, and magnetic direction is parallel or perpendicular to the plane of bonding jumper; Wherein in the every pair of bonding jumper, the spacing of two bonding jumpers is 0.2mm-0.8mm, and the size of cellular construction is 1mm, and the relative dielectric constant of medium is 4.4, relative permeability is 1, realizes the two-dimensional left-handed material that is comprised of this cellular construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010201091 CN101866088B (en) | 2010-06-04 | 2010-06-04 | Manufacture method of two-dimensional left-handed material based on plan periodic structure |
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| CN 201010201091 CN101866088B (en) | 2010-06-04 | 2010-06-04 | Manufacture method of two-dimensional left-handed material based on plan periodic structure |
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| CN101866088A CN101866088A (en) | 2010-10-20 |
| CN101866088B true CN101866088B (en) | 2013-05-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103296353B (en) * | 2012-02-29 | 2018-02-16 | 深圳光启创新技术有限公司 | A kind of artificial electromagnetic material and the wave filter using the material |
| CN104167610B (en) * | 2014-07-18 | 2017-05-10 | 浙江大学 | Zero-scattering linear particle and electromagnetic invisible material formed by the same |
| CN106207479B (en) * | 2016-07-22 | 2019-04-12 | 杭州电子科技大学 | Left-handed material made of a kind of structural unit of left-handed material and its arrangement |
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| US7760053B2 (en) * | 2003-12-31 | 2010-07-20 | Lake Shore Cryotronics, Inc. | Negative refractive index and opto-magnetic materials and method of fabricating same |
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Non-Patent Citations (2)
| Title |
|---|
| 张富利.结构单元与左手材料性能关系研究.《西北工业大学硕士学位论文》.2006,41-50. * |
| 郭云胜.细导线阵列产生负等效介电常数的简单推导.《大学物理》.2010,第29卷(第3期),全文. * |
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