CN102800987A - Metamaterial reflecting mirror - Google Patents
Metamaterial reflecting mirror Download PDFInfo
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- CN102800987A CN102800987A CN2011101488856A CN201110148885A CN102800987A CN 102800987 A CN102800987 A CN 102800987A CN 2011101488856 A CN2011101488856 A CN 2011101488856A CN 201110148885 A CN201110148885 A CN 201110148885A CN 102800987 A CN102800987 A CN 102800987A
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Abstract
The invention discloses a metamaterial reflecting mirror, which comprises a base material and a plurality of artificial microstructures, wherein the base material is divided into a plurality of crystal lattices; the artificial microstructures are placed into the crystal lattices to form an artificial microstructure and base material combining unit and the numeric area of the equivalent refractive index n of the artificial microstructure and base material combining unit is that n is greater than or equal to 6.5 and less than or equal to 18. The metamaterial reflecting mirror provided by the invention is simple, and small in volume, easy to implement, and low in cost, and has a wide application prospect.
Description
Technical field
The present invention relates to ultra field of materials, more particularly, relate to a kind of ultra material speculum.
Background technology
At present, ultra material (metamaterial) more and more causes people's attention as a kind of material design concept and research forward position, and so-called ultra material is meant artificial composite structure or composite material that some have the not available extraordinary physical property of natural material.Structurally ordered design through on the key physical yardstick of material can break through the restriction of some apparent natural law, thereby obtains to exceed the intrinsic common meta-materials function of nature.
Developing " the ultra material " that so far comprising: " LHM ", photonic crystal, " ultra magnetic material " etc., ultra material character are the intrinsic properties of major decision and constituent material not often, and is decided by artificial structure wherein.
Ultra material influences the index that electromagnetic wave is mainly paid close attention to the following aspects:
1) high-performance.Should have higher performance to electromagnetic influence, near the needed state that influences.
2) low-loss.Has higher energy affect efficient, with the target that realizes saving energy and reduce the cost.
3) size is little.Do not take too much space.
In addition, should be easy to realize that design should be too not complicated to electromagnetic influence, device cost should be not too high.
Ultra material is formed the material behavior that can provide various common materials to have and do not have by media substrate and a plurality of artificial structure that is provided with on the base material.Single artificial structure size is generally less than 1/10 wavelength, and it has electroresponse and/or magnetic response to extra electric field and/or magnetic field, thereby has the effective dielectric constant of showing and/or equivalent permeability, perhaps equivalent refractive index and wave impedance.The effective dielectric constant of artificial structure and equivalent permeability (or equivalent refractive index and wave impedance) can artificially be designed and control by the decision of cell geometry dimensional parameters.And artificial structure can have the anisotropic electromagnetic parameter of artificial design, thereby produces the phenomenon of many novelties, for realizing electromagnetic influence possibility is provided.
Summary of the invention
The technical problem that the present invention will solve is, provide a kind of volume little, simple, be easy to realize and ultra material speculum that cost is low.
The present invention solves first technical scheme that its technical problem adopts: base material and be attached to a plurality of artificial micro-structural on the said base material; Said base material is divided into a plurality of lattices; Said artificial micro-structural places said lattice to form the unit of artificial micro-structural and substrate combination, and the unit equivalent refractive index n span of said artificial micro-structural and substrate combination is: 6.5≤n≤18.
In ultra material speculum of the present invention; Said ultra material speculum is piled up by a plurality of ultra material speculum sheet substrates and forms; Ultra material speculum sheet substrate is made up of base material and a plurality of artificial micro-structural that is attached on the said base material, and all artificial micro-structurals form periodic array in the space.
In ultra material speculum of the present invention, said all artificial micro-structurals are inhomogeneity periodic array in the space.
In ultra material speculum of the present invention, under the situation that base material is selected, obtain inner ranges of indices of refraction through pattern, design size and/or artificial micro-structural the arranging in the space that changes artificial micro-structural and distribute.
In ultra material speculum of the present invention, said base material is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
In ultra material speculum of the present invention, described artificial micro-structural be have pattern attached to the metal wire on the base material.
In ultra material speculum of the present invention, said metal wire through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method attached on the base material.
In ultra material speculum of the present invention, said metal wire is copper cash or silver-colored line.
In ultra material speculum of the present invention; Said metal wire is two-dimentional flakes; It has each other first main line and second main line that vertically is " ten " word; Each vertically is provided with one first branch line the two ends of said first main line, and each vertically is provided with one second branch line the two ends of said second main line.
In ultra material speculum of the present invention, said first main line and second main line are divided equally each other, and the center of said first branch line is connected on first main line, and the center of said second branch line is connected on second main line.
The ultra material speculum of embodiment of the present invention has following beneficial effect:
1. volume is little, does not take too much space;
2. simple, be easy to realize, low cost, influence through ultra material refractive index, do not rely on the kind and the shape of equipment.
Description of drawings
Fig. 1 is one one kinds of ultra material mirror structure block diagrams of the embodiment of the invention;
Fig. 2 is 21 kinds of ultra material mirror structure sketch mapes of the embodiment of the invention;
Fig. 3 a is the front view of the ultra material of first embodiment of the invention;
Fig. 3 b is the sketch map of the ultra material microstructure of the present invention;
Fig. 3 c is the ultra material three-dimensional structure diagram of the present invention;
Fig. 4 to Fig. 6 is the figure that derives of the artificial micro-structural of Fig. 3 b;
Fig. 7 to Fig. 9 is Fig. 3 a of the present invention figure that derives.
Embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
" ultra material " is meant artificial composite structure or the composite material that some have the not available extraordinary physical property of natural material.Structurally ordered design through on the key physical yardstick of material can break through the restriction of some apparent natural law, thereby obtains to exceed the meta-materials function of the intrinsic common character of nature.
Three key characters that " ultra material " is important:
(1) " ultra material " the composite material that normally has novel artificial structure;
(2) " ultra material " has extraordinary physical property (not available in the natural often material);
(3) " ultra material " character intrinsic properties of major decision and constituent material not often, and be decided by artificial structure wherein.
See also Fig. 1, in instance one of the present invention, a kind of ultra material speculum 20; Comprise: base material 1 and a plurality of artificial micro-structural 2, base material 1 is divided into a plurality of lattices, and artificial micro-structural 2 places said lattice to form a unit; For higher efficient; Artificial micro-structural 2 forms periodic array on base material 1, particularly the uniformity periodic array is good, and the unit equivalent refractive index n span of artificial micro-structural and substrate combination is: 6.5≤n≤18.
According to ultra properties of materials, refractive index is big more, and its reflectivity is high more; When reaching same reflecting effect, ultra material can be made film, for specific microstructure; Refractive index under the different frequency has certain scope, as: in the 1.5GHz-3GHz scope, for specific microstructure; Its refractive index can reach 20, and the reflecting effect that is reached is fine; In the 15GHz-30GHz scope, for specific microstructure, its refractive index can reach more than 6.Therefore can be through the design specific microstructure, this speculum has broadband properties.The thickness that is somebody's turn to do ultra material speculum can be ignored the influence of reflecting properties, and the cost and the volume that therefore can reduce speculum are little.In addition, the loss of ultra material speculum is little.Existing ultra material has pliability, can make difformity according to different needs; Utilize the ultra material of high index of refraction to realize the wideband film reflecting mirror.
See also Fig. 2, another embodiment of the present invention, a kind of ultra material speculum; For higher efficient; Usually be laminated into ultra collection of material body 30 shown in Figure 2 by a plurality of ultra material 20 plate shape substrates, among Fig. 2, the ultra collection of material body 30 edges direction vertical with horizontal plane cascades.
Fig. 3 a is the front view of a ultra material 20 of sheet.Base material 1 is divided into some lattices, and the notion of " lattice " is from solid-state physics, and " lattice " here is meant in ultra material the size that each artificial micro-structural 2 is shared." lattice " size depends on the refraction index profile of artificial micro-structural 2 needs response, common artificial micro-structural 2 be of a size of required response electromagnetic wavelength 1/10th.
Artificial micro-structural 2 places lattice to form a unit, and the impedance of said unit is under the situation that base material 1 is selected, and the pattern, design size and/or the arrangement of artificial micro-structural in the space that change artificial micro-structural 2 obtain refractive index value through emulation.
Ultra material can be to electric field or magnetic field, and perhaps both carry out corresponding simultaneously.The DIELECTRIC CONSTANTS of ultra material is depended in the response of electric field, and the magnetic permeability μ of ultra material is depended in the response in magnetic field.Through to the DIELECTRIC CONSTANTS of every bit in the ultra material space and the accurate control of magnetic permeability μ, we can realize through ultra material electromagnetic influence.
Even or the heterogeneous distribution of the electromagnetic parameter of ultra material in the space is one of key character of ultra material 20.A kind of special shape that evenly be distributed as non-uniform Distribution of electromagnetic parameter in the space, but its concrete property, the characteristic that remains by each cellular construction of arranging in the space determines.Therefore; Characteristic through each structure of arranging in the design space; Just can design the electromagnetic property of whole ultra material every bit in the space, this electromagnetic material system will have numerous unusual characteristics, can play special guiding function to electromagnetic wave propagation.
In ultra material speculum of the present invention, base material 1 is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, the electrical insulating property of polytetrafluoroethylene is very good, therefore can not produce electromagnetic electric field and disturb, and have excellent chemical stability, corrosion resistance, long service life, and the base material 1 that adheres to as artificial micro-structural 2 is good selection.
In ultra material speculum of the present invention, described artificial micro-structural 2 be one have pattern attached to the metal wire on the base material 1.
In ultra material speculum of the present invention, metal wire through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method attached on the base material 1.
In ultra material speculum of the present invention, said metal wire is copper cash or silver-colored line.
Shown in Fig. 3 b; As a concrete embodiment; Said metal wire is two-dimentional flakes; It has each other first main line 21 and second main line 22 that vertically is " ten " word, and the two ends of said first main line 21 are vertically installed with two first branch lines 23, and the two ends of said first main line are vertically installed with two second branch lines 24.Said first main line 21 and second main line 22 are divided equally each other, and the center of said two first branch lines 23 is connected on first main line 21, and the center of said two second branch lines 24 is connected on second main line 22.
Fig. 3 c is the stereogram of the ultra material of the embodiment of the invention, promptly all adds two branch lines 25 and 26 again at the two ends of two first branch lines and two second branch lines.Certainly, just lifted a simple example here, the pattern of metal wire can also for other, the present invention can not enumerate this one by one.Just signal among the figure, in fact first main line, second main line, first branch line and second branch line all have width.
5 above-mentioned examples all are the artificial micro-structurals 2 that can influence refraction index profile; Also have many artificial micro-structurals 2 that influence refraction index profile in addition, like the split ring resonator structure that in many documents, all is referred to.Artificial in addition micro-structural 2 can also have a lot of distortion patterns, and to shown in Figure 9, that is: the artificial micro-structural 2 on the ultra material can also be triangle, square, irregular closed curve etc. like Fig. 7, and the present invention can not enumerate this one by one.
Under the situation that base material 1 is selected, can obtain the refractive index result who wants through pattern, design size and/or artificial micro-structural the arranging in the space of designing artificial micro-structural 2.This is because through pattern, design size and/or artificial micro-structural the arranging in the space of designing artificial micro-structural 2, can design the refractive index of excess of export material 5 each unit in the space.How pattern, design size and/or the refractive index of artificial micro-structural in the space as for obtaining artificial micro-structural are arranged, and this method is multiple, gives an example; Can obtain through reverse computer simulation, at first we confirm the refraction index profile result of needs, go to design the refraction index profile of ultra material monolithic according to this effect; Calculate the refraction index profile of every bit the space again from integral body; Select pattern, design size and/or artificial micro-structural the arranging in the space (having deposited multiple artificial micro-structural data in the computer in advance) of corresponding artificial micro-structural according to the refractive index of this every bit, can use the method for exhaustion, for example earlier selected artificial micro-structural with specific pattern to the design of each point; Calculate refractive index; Contrast with the result who obtains and we want contrasts recirculation repeatedly, till the refractive index that finds us to want; If found, then accomplished the parameter choosing of artificial micro-structural 2; If do not find, then change a kind of artificial micro-structural of pattern, the circulation above repeating is till the refractive index that finds us to want.If still do not find, then said process can not stop yet.After that is to say the artificial micro-structural of the refractive index that has only found our needs, program just can stop.Because this process is all accomplished by computer, therefore, seem complicated, can accomplish soon in fact.
The ultra material speculum of embodiment of the present invention has following beneficial effect:
1. volume is little, does not take too much space;
2. simple, be easy to realize, low cost, influence through ultra material refractive index, do not rely on the kind and the shape of equipment.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. ultra material speculum; It is characterized in that; Comprise: base material and be attached to a plurality of artificial micro-structural on the said base material, said base material is divided into a plurality of lattices, and said artificial micro-structural places said lattice; Form the unit of artificial micro-structural and substrate combination, the unit equivalent refractive index n span of said artificial micro-structural and substrate combination is: 6.5≤n≤18.
2. ultra material speculum according to claim 1; It is characterized in that; Said ultra material speculum is piled up by a plurality of ultra material speculum sheet substrates and forms; Said ultra material speculum sheet substrate is made up of base material and a plurality of artificial micro-structural that is attached on the said base material, and all artificial micro-structurals form periodic array in the space.
3. ultra material speculum according to claim 2 is characterized in that, said all artificial micro-structurals are inhomogeneity periodic array in the space.
4. ultra material speculum according to claim 1; It is characterized in that; Under the selected situation of base material, the distribution of the unit equivalent refractive index n that obtains said artificial micro-structural and substrate combination through pattern, design size and/or artificial micro-structural the arranging in the space that changes artificial micro-structural.
5. ultra material speculum according to claim 1 is characterized in that said base material is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
6. ultra material speculum according to claim 1 is characterized in that, described artificial micro-structural be have pattern attached to the metal wire on the base material.
7. ultra material speculum according to claim 6 is characterized in that, said metal wire through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method attached on the base material.
8. ultra material speculum according to claim 6 is characterized in that, said metal wire is copper cash or silver-colored line.
9. ultra material speculum according to claim 6; It is characterized in that; Said metal wire is two-dimentional flakes; It has each other first main line and second main line that vertically is " ten " word, and each vertically is provided with one first branch line the two ends of said first main line, and each vertically is provided with one second branch line the two ends of said second main line.
10. ultra material speculum according to claim 9 is characterized in that said first main line and second main line are divided equally each other, and the center of said first branch line is connected on first main line, and the center of said second branch line is connected on second main line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110148885.6A CN102800987B (en) | 2011-06-03 | 2011-06-03 | Metamaterial reflecting mirror |
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| CN201110148885.6A CN102800987B (en) | 2011-06-03 | 2011-06-03 | Metamaterial reflecting mirror |
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Cited By (5)
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| CN103941316A (en) * | 2014-03-19 | 2014-07-23 | 哈尔滨工业大学深圳研究生院 | Polarization-insensitive high-index-of-refraction metamaterial and preparation method thereof |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
| CN108415109A (en) * | 2018-01-30 | 2018-08-17 | 常熟市浙大紫金光电技术研究中心 | A kind of optics retroreflector and reflector array |
| CN110133761A (en) * | 2019-05-20 | 2019-08-16 | 湖南理工学院 | A kind of Meta Materials reflectance coating and preparation method thereof |
| CN117215110A (en) * | 2022-11-11 | 2023-12-12 | 剑芯光电(苏州)有限公司 | Silicon-based liquid crystal spatial light modulator and preparation method thereof |
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| CN101572355A (en) * | 2009-06-15 | 2009-11-04 | 哈尔滨工业大学 | Antenna reflector with a compact single-surface photo band gap (PBG) periodic structure |
| CN101587990A (en) * | 2009-07-01 | 2009-11-25 | 东南大学 | Broad band cylindrical lens antenna based on artificial electromagnetic materials |
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| JP2001085936A (en) * | 1999-09-09 | 2001-03-30 | Matsushita Electric Ind Co Ltd | High frequency substrate, dielectric lens antenna and its manufacture |
| US20040008145A1 (en) * | 2002-07-11 | 2004-01-15 | Harris Corporation | Spatial filtering surface operative with antenna aperture for modifying aperture electric field |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103941316A (en) * | 2014-03-19 | 2014-07-23 | 哈尔滨工业大学深圳研究生院 | Polarization-insensitive high-index-of-refraction metamaterial and preparation method thereof |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
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| CN108415109A (en) * | 2018-01-30 | 2018-08-17 | 常熟市浙大紫金光电技术研究中心 | A kind of optics retroreflector and reflector array |
| CN108415109B (en) * | 2018-01-30 | 2021-07-13 | 常熟市浙大紫金光电技术研究中心 | Optical retroreflector and reflector array |
| CN110133761A (en) * | 2019-05-20 | 2019-08-16 | 湖南理工学院 | A kind of Meta Materials reflectance coating and preparation method thereof |
| CN117215110A (en) * | 2022-11-11 | 2023-12-12 | 剑芯光电(苏州)有限公司 | Silicon-based liquid crystal spatial light modulator and preparation method thereof |
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