CN1275350C - Negative magnetic permeability material of tunable thin film microwave and preparation method - Google Patents
Negative magnetic permeability material of tunable thin film microwave and preparation method Download PDFInfo
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- CN1275350C CN1275350C CN 200310118968 CN200310118968A CN1275350C CN 1275350 C CN1275350 C CN 1275350C CN 200310118968 CN200310118968 CN 200310118968 CN 200310118968 A CN200310118968 A CN 200310118968A CN 1275350 C CN1275350 C CN 1275350C
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Abstract
The present invention relates to a thin film microwave negative magnetic permeability material and a preparation technique thereof, particularly to a tunable thin film microwave negative magnetic permeability material and a preparation method thereof. Compared with the existing materials, a structural unit of the negative magnetic permeability material of the present invention comprises two concentric metal hexagonal split rings fixed on a plastic thin film, and the cross section of a material required for preparing the rings forms a circle The resonant frequency and the resonant strength of the structural unit can be regulated and controlled by the geometric dimensions of an inner and an outer rings, and the tunable thin film microwave negative magnetic permeability material can be manufactured by regulating geometric dimensions forming the structural unit, namely the introduction of the defect resonant rings. A microwave transmitting test of the prepared material shows that the resonant frequency of the prepared material can change into 9814 MHz from 9489 MHz, and a regulating amplitude can reach 3.4 percent; the resonant strength can maximally change into 39.3 percent.
Description
Technical field the present invention relates to a kind of negative magnetic-inductive capacity material and technology of preparing thereof, particularly a kind of tunable thin film microwave negative magnetic-inductive capacity material and preparation method thereof.
The background technology negative magnetic-inductive capacity material is the non-existent artificial composite structure material of a kind of occurring in nature, distributes by geometry and the space pattern of regulating its construction unit, can obtain the minus material of magnetic permeability.Negative magnetic-inductive capacity material is combined with each other with the negative permittivity material can make a kind of material of novelty-----left-handed materials (left-handed metamaterials).In this material, electromagnetic phase velocity is opposite with the group velocity direction, thereby presents the optical characteristics of many novelties, as unusual Doppler effect, unusual Cherenkov effect, perfect lens effect, negative refraction etc.Thereby there is important use be worth in fields such as radio communication, hypersensitization transducer, diagnosis imagings.It is rectangle that the construction unit of the negative magnetic-inductive capacity material that present researcher is designed mostly is cross section circular and square and ring; In a single day material makes, and its magnetic permeability is then immutable for negative frequency range, and this has brought significant limitation for its practical application.
Summary of the invention the purpose of this invention is to provide a kind of tunable thin film microwave negative magnetic-inductive capacity material.Its construction unit is a metal hexagonal apertures resonant ring.The resonant ring of identical geometric parameter becomes thin-film material according to certain periodic arrangement, and this material shows as negative magnetoconductivity in its resonance frequency upper end one frequency band.By in material, introducing geometric parameter split ring resonator inequality, the main resonatnt frequency of material and defective resonance frequency are moved, promptly make the thin film microwave negative magnetic-inductive capacity material of negative magnetoconductivity frequency adjustable.
Description of drawings
Fig. 1 thin film microwave negative magnetic-inductive capacity material sample and microwave test device.
Fig. 2 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.0/2.5mm) defective SRRs (1.5/2.0mm).
Fig. 3 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.0/2.5mm) defective SRRs (1.5/3.0mm).
Fig. 4 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.0/3.0mm) defective SRRs (1.5/3.0mm).
Fig. 5 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.0/3.0mm) defective SRRs (2.0/4.0mm).
Fig. 6 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.5/4.0mm) defective SRRs (2.0/2.5mm).
Fig. 7 main resonance ring is the microwave transmission curve of the thin film microwave negative magnetic-inductive capacity material of SRRs (2.5/4.0mm) defective SRRs (2.0/3.0mm).
Embodiment is raw materials used to be the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cut off coil along arbitrary limit mid point and obtain different openings size hexagonal apertures copper ring; Interior ring inscribed circle diameter is 1.0mm～3.0mm, and the outer shroud inscribed circle diameter is 2.0mm～4.0mm; With inner and outer ring with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring; A plurality of hexagonal apertures resonant rings are obtained the thin film microwave negative magnetic-inductive capacity material with certain spacing arrangement; By regulating the physical dimension that it forms construction unit, promptly introduce the defective resonant ring and regulate its resonance frequency and resonance intensity, obtain tunable thin film microwave negative magnetic-inductive capacity material.
The performance of implementation procedure of the present invention and material is by embodiment and description of drawings:
Embodiment one:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 1.5mm, 2.0mm, and the outer shroud inscribed circle diameter is 2.0mm, 2.5mm; With interior ring 2.0mm and outer shroud 2.5mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 1.5mm and outer shroud 2.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 2.
Embodiment two:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 1.5mm, 2.0mm, and the outer shroud inscribed circle diameter is 2.5mm, 3.0mm; With interior ring 2.0mm and outer shroud 2.5mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 1.5mm and outer shroud 3.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 3.
Embodiment three:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 1.5mm, 2.0mm, and the outer shroud inscribed circle diameter is 3.0mm; With interior ring 2.0mm and outer shroud 3.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 1.5mm and outer shroud 3.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 4.
Embodiment four:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 2.0mm, and the outer shroud inscribed circle diameter is 3.0mm, 4.0mm; With interior ring 2.0mm and outer shroud 3.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 2.0mm and outer shroud 4.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 5.
Embodiment five:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 2.0mm, 2.5mm, and the outer shroud inscribed circle diameter is 2.5mm, 4.0mm; With interior ring 2.5mm and outer shroud 4.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 2.0mm and outer shroud 2.5mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 6.
Embodiment six:
Raw materials used is the copper cash of φ=0.15mm.At first copper cash is wrapped on the different size hexagon mould, makes the hexagon wire coil, cutting off coil along arbitrary limit mid point, to obtain opening be 0.2mm hexagonal apertures copper ring; Interior ring inscribed circle diameter is 2.0mm, 2.5mm, and the outer shroud inscribed circle diameter is 3.0mm, 4.0mm; With interior ring 2.5mm and outer shroud 4.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring I; With interior ring 2.0mm and outer shroud 3.0mm with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring II; 3 hexagonal apertures resonant ring I are obtained the thin film microwave negative magnetic-inductive capacity material with the 5mm spacing arrangement; The resonant ring I of centre is replaced with resonant ring II, promptly obtain having the thin film microwave negative magnetic-inductive capacity material of defective.The microwave transmission curve of sample as shown in Figure 7.
Claims (4)
1. tunable thin film microwave negative magnetic-inductive capacity material, the construction unit of this material is two concentric metal openings rings, matrix is plastic film, its principal character is to introduce the different defect sturcture unit of physical dimension in the construction unit of periodic arrangement, is realized the Modulatory character of negative magnetoconductivity frequency range and intensity by defective ring geometrical variations.
2. tunable thin film microwave negative magnetic-inductive capacity material according to claim 1 is characterized in that the defect sturcture unit is that hexagonal apertures resonant ring and its cross section are circle or rectangle.
3. tunable thin film microwave negative magnetic-inductive capacity material according to claim 1, preparation resonant ring material therefor is metallic copper, iron, nickel wire, the interior ring inscribed circle diameter that it is characterized in that the defective split ring resonator is 1.5mm～2.0mm, and the outer shroud inscribed circle diameter is 2.0mm～4.0mm.
4. the preparation method of a tunable thin film microwave negative magnetic-inductive capacity material comprises following several steps:
(1) metal wire is wrapped on the different size hexagon mould, makes the hexagon wire coil, cut off coil along arbitrary limit mid point, obtain different openings size hexagonal apertures becket, openings of sizes is 0.2mm;
(2) the interior ring inscribed circle diameter of metal openings resonant ring is 1.0mm～3.0mm, and the outer shroud inscribed circle diameter is 2.0mm～4.0mm;
(3) with inner and outer ring with one heart and aperture position become 180 ° to be fixed on the plastic film, obtain single hexagonal apertures resonant ring;
(4) a plurality of measure-alike hexagonal apertures resonant rings are obtained the thin film microwave negative magnetic-inductive capacity material with certain spacing arrangement, make tunable thin film microwave negative magnetic-inductive capacity material by introducing the different defective split ring resonator of size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200310118968 CN1275350C (en) | 2003-12-09 | 2003-12-09 | Negative magnetic permeability material of tunable thin film microwave and preparation method |
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| CN 200310118968 CN1275350C (en) | 2003-12-09 | 2003-12-09 | Negative magnetic permeability material of tunable thin film microwave and preparation method |
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| CN1275350C true CN1275350C (en) | 2006-09-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1925209B (en) * | 2005-09-02 | 2010-06-09 | 西北工业大学 | Minus magnetism conducting rate material constituted of branch shape structural unit |
| CN101162797B (en) * | 2006-10-10 | 2011-12-14 | 西北工业大学 | Negative magnetic-inductive capacity material mobile phone antenna electromagnetic shielding device |
| CN102903397B (en) * | 2011-07-29 | 2015-07-22 | 深圳光启高等理工研究院 | Artificial broadband absorbing electromagnetic material |
| CN104614403B (en) * | 2015-01-22 | 2017-05-24 | 江西师范大学 | Sensor, forming method of sensor, and method for defecting gas |
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