CN102811594B - A kind of broadband absorbing Meta Materials and suction wave apparatus - Google Patents
A kind of broadband absorbing Meta Materials and suction wave apparatus Download PDFInfo
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- CN102811594B CN102811594B CN201210268231.1A CN201210268231A CN102811594B CN 102811594 B CN102811594 B CN 102811594B CN 201210268231 A CN201210268231 A CN 201210268231A CN 102811594 B CN102811594 B CN 102811594B
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Abstract
Disclosure one broadband absorbing Meta Materials, it includes the resistive layer, the first base material, multiple metal patch and the second base material that set gradually along electromagnetic wave propagation direction; Described resistive layer is attached at the first substrate surface, multiple metal patch array arrangements are on any surface of described first base material and the second base material apparent surface, and described resistive layer inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with vertical dimension is described broadband absorbing Meta Materials the first of described second base material bottom surface. Meta-material principle is inhaled ripple principle and is combined design broadband absorbing Meta Materials by the present invention with touch screens, is arranged by multi-layer substrate and reaches broadband absorbing effect. The present invention also provides for a kind of suction wave apparatus, and it is attached with above-mentioned broadband absorbing Meta Materials.
Description
Technical field
The present invention relates to a kind of absorbing material, particularly relate to a kind of broadband absorbing Meta Materials and inhale wave apparatus.
Background technology
Along with scientific technological advance make rapid progress, with electromagnetic wave be medium various technology and product get more and more, the impact of environment is also increased by electromagenetic wave radiation day by day. Such as, radio wave is likely to airport environment is interfered, and causes that airplane flight cannot normally take off; Mobile phone may interfere with the work of various precise electronic medical apparatus and instruments; Even common computer, also radiating the electromagnetic wave of the information of carrying, it is likely to beyond several kilometers received and reappear, causing the leakage of the aspect information such as national defence, politics, economy, science and technology. Therefore, administer electromagnetic pollution, find a kind of material absorbing material that can keep out and weaken electromagenetic wave radiation, it has also become the big problem of the one of material science.
Existing absorbing material utilizes each material self to electromagnetic absorbent properties, mixed material is made to possess microwave absorbing property by designing the component of different materials, this type of design of material is complicated and does not have large-scale promotion, the mechanical performance of this type of material is limited to the mechanical performance of material itself simultaneously, it is impossible to meet the demand of special occasions. The ripple frequency of this type of absorbing material suction simultaneously is single, it is impossible to meet broadband absorbing effect.
Summary of the invention
The technical problem to be solved is in that, for the above-mentioned deficiency of prior art, it is proposed to a kind of inhale the broadband absorbing Meta Materials that wave frequency is wider.
This invention address that its technical problem employed technical scheme comprise that, it is proposed to a kind of broadband absorbing Meta Materials, it includes the resistive layer, the first base material, multiple metal patch and the second base material that set gradually along electromagnetic wave propagation direction; Described resistive layer is attached at the first substrate surface, multiple metal patch array arrangements are on any surface of described first base material and the second base material apparent surface, and described resistive layer inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with vertical dimension is described broadband absorbing Meta Materials the first of described second base material bottom surface.
Further, described resistive layer inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with the vertical dimension of described metal patch is described wideband wave absorbing material second.
Further, described resistive layer resistance value is 500 to 1000 ohm.
Further, described metal patch is filled squares metal patch.
Further, the described metal patch length of side is 5 to 7 millimeters, and adjacent metal paster spacing is 2 to 3 millimeters.
Further, described first substrate material is FR-4 material, ferroelectric material, ferrite material, ferromagnetic material or F4B material.
Further, described second substrate material is FR-4 material, ferroelectric material, ferrite material, ferromagnetic material or F4B material.
Further, described metal patch material is copper, silver or aluminum.
Further, described touch screens is by electrically conductive ink is evenly applied on touch screens sheet material constitute.
The present invention also provides for a kind of suction wave apparatus, and it includes metal shell, and described metal shell surface is pasted with described broadband absorbing Meta Materials.
Meta-material principle is inhaled ripple principle and is combined design broadband absorbing Meta Materials by the present invention with touch screens, is arranged by multi-layer substrate and reaches broadband absorbing effect.
Accompanying drawing explanation
Fig. 1 is the perspective view of the elementary cell constituting Meta Materials;
Fig. 2 is the sectional view of broadband absorbing Meta Materials of the present invention;
Fig. 3 is the structural representation of multiple metal patches in broadband absorbing Meta Materials of the present invention;
Fig. 4 is the sectional view that the present invention inhales wave apparatus.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
Light, as electromagnetic one, it is in glass, because the wavelength of light is much larger than the size of atom, therefore we can use the univers parameter of glass, for instance refractive index, rather than the details parameter of the atom of composition glass describes the glass response to light. Accordingly, when research material is to other electromagnetic responses, in material, electromagnetic response can also be used the univers parameter of material by any yardstick much smaller than the structure of electromagnetic wavelength, for instance DIELECTRIC CONSTANT ε and magnetic permeability μ describe. The dielectric constant being made material each point by the structure of designing material every is all identical or different with pcrmeability, so that the dielectric constant of material entirety and pcrmeability are certain rule arrangement, pcrmeability and the dielectric constant of rule arrangement can make material that electromagnetic wave has response macroscopically, for instance converge electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption etc. The material of such pcrmeability and dielectric constant with rule arrangement is referred to as Meta Materials.
As it is shown in figure 1, the perspective view that Fig. 1 is the elementary cell constituting Meta Materials. The elementary cell of Meta Materials includes man-made microstructure 1 and the base material 2 of this man-made microstructure attachment. Man-made microstructure can be artificial metal micro structure, it has plane or three-dimensional topological structure that incident electromagnetic wave electric field and/or magnetic field produce response, change pattern and/or the size of artificial metal's micro structure in each Meta Materials elementary cell, the response to incident electromagnetic wave of each Meta Materials elementary cell can be changed. Multiple Meta Materials elementary cells arrange according to certain rules, can make Meta Materials that electromagnetic wave has the response of macroscopic view. Owing to incident electromagnetic wave need to be had macroscopical electromagnetic response by Meta Materials entirety, therefore the response of incident electromagnetic wave need to be formed continuous response by each Meta Materials elementary cell, what this required each Meta Materials elementary cell is smaller in size than incident electromagnetic wave 1/5th wavelength, it is preferred to incident electromagnetic wave 1/10th wavelength. During this section describes, it is a kind of man-made division method that Meta Materials entirety is divided into multiple Meta Materials elementary cell, but should know that this kind of division methods is only for convenience of description, Meta Materials both can be spliced by multiple Meta Materials elementary cells or assemble, also artificial metal can being arranged in the micro structure cycle on base material and constitute, technique is simple and with low cost. Incident electromagnetic wave can be produced continuous print electromagnetic response by artificial metal's micro structure that namely cycle arrangement refers in each Meta Materials elementary cell of above-mentioned artificial division.
The present invention utilizes above-mentioned meta-material principle cycle arrangement metal patch substrate surface between two blocks of base materials to attach touch screens to form salisbury screen, in conjunction with salisbury screen and Meta Materials to reach broadband absorbing effect.
Refer to the sectional view that Fig. 2, Fig. 2 are broadband absorbing Meta Materials of the present invention. In Fig. 2, broadband absorbing Meta Materials of the present invention includes resistive layer the 10, first base material 20 set gradually along electromagnetic wave propagation direction, multiple metal patch 30 and the second base material 40. Resistive layer 10 is attached at the first base material 20 surface, and multiple metal patch 30 array arrangements are on any surface of described first base material and the second base material apparent surface. The structural representation that multiple metal patch 30 array arrangements are formed is as shown in Figure 3.
Resistive layer 10 inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with vertical dimension is described broadband absorbing Meta Materials the first of the second base material 40 bottom surface. Due to vertical dimension is an electromagnetic wavelength 1/4th of resistive layer 10 and the second base material 40 bottom surface, the wave frequency that this wavelength is corresponding relatively, resistive layer 10 constitutes salisbury screen, and the electromagnetic wave of this frequency is had wave-absorbing effect.
Further, resistive layer 10 inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with the vertical dimension of multiple metal patches 30 is described broadband absorbing Meta Materials second. Due to resistive layer 10 and vertical dimension is another electromagnetic wavelength 1/4th of multiple metal patches 30, the wave frequency that this wavelength is corresponding relatively, resistive layer 10 constitutes salisbury screen, and the electromagnetic wave of this frequency is had wave-absorbing effect.
Can pass through to adjust the thickness of the first base material 20 and the second base material 40 thus adjusting the first suction wave frequency and the second frequency inhaling wave frequency, thus realizing inhaling the adjustable of wave frequency.
Electromagnetic wave is had filter effect by the metal patch 30 of array arrangement. The electromagnetic wave frequency of its filtration can be changed by the size and interval width changing metal patch 30. In the present invention, metal patch 30 is preferably filled squares metal patch. The filled squares metal patch length of side is preferably 5 to 7 millimeters, and adjacent metal paster spacing is preferably 2 to 3 millimeters.
In the present invention, touch screens will be evenly applied on touch screens sheet material to constitute preferably by electrically conductive ink. By choosing the electrically conductive ink of different model so that touch screens has different resistance values, in the present invention, touch screens resistance value is preferably 500 to 1000 ohm.
The material of the first base material 20 and the second base material 40 is preferably the good material of absorbing property, for instance ferroelectric material, ferrite material, ferromagnetic material; For considering its mechanical performance and electric property, it is possible to select FR-4 material, F4B material etc.
Refer to Fig. 4, Fig. 4 is that metal shell 50 surface that above-mentioned broadband absorbing Meta Materials is attached at a device constitutes the structural representation inhaling wave apparatus.
This device can be all kinds of device with metal shell such as aircraft, wave filter and electronic device.
Above in conjunction with accompanying drawing, embodiments of the invention are described; but the invention is not limited in above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; rather than it is restrictive; those of ordinary skill in the art is under the enlightenment of the present invention; without departing under present inventive concept and scope of the claimed protection situation, it may also be made that a lot of form, these belong within the protection of the present invention.
Claims (6)
1. a broadband absorbing Meta Materials, it is characterised in that: include the resistive layer, the first base material, multiple metal patch and the second base material that set gradually along electromagnetic wave propagation direction; Described resistive layer is attached at the first substrate surface, multiple metal patch array arrangements are on any surface of described first base material and the second base material apparent surface, and described resistive layer inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with vertical dimension is described broadband absorbing Meta Materials the first of described second base material bottom surface; Described metal patch is filled squares metal patch, described metal patch is arranged into matrix structure according to the form of multiple lines and multiple rows, the quantity of each row metal patch is identical, and the metal patch of different rows forms some row in column direction alignment, between each gap in the ranks and row, gap is straight line, and gap square crossing between gap and row in the ranks, the material of described first base material and the second base material is ferroelectric material, ferrite material, ferromagnetic material, FR-4 material or F4B material; The described metal patch length of side is 5 to 7 millimeters, and adjacent metal paster spacing is 2 to 3 millimeters.
2. broadband absorbing Meta Materials as claimed in claim 1, it is characterised in that: described resistive layer inhales 1/4th of electromagnetic wavelength corresponding to ripple frequency with the vertical dimension of described metal patch is described wideband wave absorbing material second.
3. broadband absorbing Meta Materials as claimed in claim 2, it is characterised in that: described resistive layer resistance value is 500 to 1000 ohm.
4. broadband absorbing Meta Materials as claimed in claim 1, it is characterised in that: described metal patch material is copper, silver or aluminum.
5. broadband absorbing Meta Materials as claimed in claim 1, it is characterised in that: described resistive layer is by electrically conductive ink is evenly applied on resistive layer sheet material constitute.
6. inhale wave apparatus for one kind, it is characterised in that: including metal shell, described metal shell surface is pasted with claim 1 to the broadband absorbing Meta Materials described in any one of claim 5.
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| CN201210268231.1A CN102811594B (en) | 2012-07-31 | 2012-07-31 | A kind of broadband absorbing Meta Materials and suction wave apparatus |
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| CN201210268231.1A CN102811594B (en) | 2012-07-31 | 2012-07-31 | A kind of broadband absorbing Meta Materials and suction wave apparatus |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104334006A (en) * | 2013-07-22 | 2015-02-04 | 深圳光启创新技术有限公司 | Metamaterial and equipment |
| CN103715513B (en) * | 2014-01-17 | 2016-03-30 | 中国科学院光电技术研究所 | A kind of wideband wave absorbing material based on second wavelength metallic structure |
| CN106147703A (en) * | 2015-04-03 | 2016-11-23 | 深圳光启尖端技术有限责任公司 | A kind of Wave suction composite material and preparation method thereof |
| CN106341974B (en) * | 2015-07-10 | 2019-10-15 | 深圳光启尖端技术有限责任公司 | A kind of absorbing meta-material and inhale wave apparatus |
| CN106332533B (en) * | 2015-07-10 | 2020-03-20 | 深圳光启尖端技术有限责任公司 | Wave-absorbing metamaterial |
| CN107293850B (en) * | 2016-03-31 | 2023-10-20 | 深圳光启高等理工研究院 | Metamaterial flat plate, preparation method thereof and metamaterial flat plate antenna |
| CN110085998A (en) * | 2019-05-05 | 2019-08-02 | 电子科技大学 | The adjustable X-band absorbing material of Meta Materials based on liquid crystal |
| CN110190407B (en) * | 2019-05-14 | 2021-03-30 | 南京航空航天大学 | Broadband wave absorber based on resistive film and broadband wave absorber array |
| CN112864633B (en) * | 2021-01-08 | 2022-03-04 | 中南大学 | Broadband microwave absorber based on super surface |
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| CN102480004A (en) * | 2011-03-29 | 2012-05-30 | 深圳光启高等理工研究院 | Metamaterial with spatial clearance and preparation method of metamaterial |
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| JP2006049354A (en) * | 2004-07-30 | 2006-02-16 | Kumagai Gumi Co Ltd | Electromagnetic wave absorber and building interior construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102480004A (en) * | 2011-03-29 | 2012-05-30 | 深圳光启高等理工研究院 | Metamaterial with spatial clearance and preparation method of metamaterial |
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