CN104600434A - Double-L-shaped chiral metamaterial micro-unit structure with asymmetric transmission feature - Google Patents
Double-L-shaped chiral metamaterial micro-unit structure with asymmetric transmission feature Download PDFInfo
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Abstract
The invention discloses a double-L-shaped shaped chiral metamaterial micro-unit structure with the asymmetric transmission feature. The double-L-shaped shaped chiral metamaterial micro-unit structure comprises a dielectric substrate, an upper surface artificial metal microstructure of the dielectric substrate, and a lower surface artificial metal microstructure of the dielectric substrate; the upper surface artificial metal microstructure of the dielectric substrate is composed of two L-shaped metal plates which have the same size and can be rotated in 180 degrees about a central point to be overlapped; the a lower surface artificial metal microstructure of the dielectric substrate is prepared by translating and rotating the upper surface structure about different shafts; the position relation between the upper surface and lower surface metal structures of the dielectric substrate can be changed to gain the special electromagnetic feature. The micro-unit structure is simple and easily manufactured, has the good asymmetric transmission feature in the working frequency section, and can be widely applied to an optical deflector, an optical rotor, an optical isolator and other optical electronic devices.
Description
Technical field
The present invention relates to a kind of artificial composite microstructure with electromagnetic property, particularly relate to a kind of artificial composite microstructure with asymmetric transmission characteristic, be applied to electromagnetic communication technical field.
Background technology
Meta Materials is a kind of a kind of artificial composite structure with extraordinary physical property not available for nature material.Hand levies the artificial micro-structure of Meta Materials by periodic arrangement, realizes the electromagnetic property that some are special, such as negative index, asymmetric transmission.
At present, hand is levied Meta Materials and is generally made up of multiple metamaterial sheet be superimposed.Each metamaterial sheet is made up of metal micro structure or medium substrate.The electromagnetic response of Meta Materials is determined by the shape of artificial micro-structure and physical dimension.By the coupling effect between micro-structural, obtain the electromagnetic response that some are special.The size of usual artificial micro-structure is about 1/10th of the electromagnetic wavelength producing electromagnetic response.
Growing along with Meta Materials, people achieve according to different micro-structurals the electromagnetic property that nature material do not have, such as negative refraction, stealthy cape, perfect lens.Along with the further further investigation of Meta Materials, Meta Materials will have more new electromagnetic property.Hand is levied the architectural characteristic of Meta Materials and its distinctive rotation effect and is negative refractive index material research and opens new chapter, becomes a new problem of material with negative refractive index research.
Summary of the invention
In order to solve prior art problem, the object of the invention is to the deficiency overcoming prior art existence, a kind of double L-shaped hand with asymmetric transmission characteristic is provided to levy the microcellular structure of Meta Materials, by the rotation of L-type sheet metal, obtain different position relationships, thus obtain a kind of double L-shaped hand newly and levy structure, this structure and its mirror image asymmetric, achieve good asymmetric transmission characteristic by electromagnetic simulation software CST simplation verification microcellular structure of the present invention.
Create object for reaching foregoing invention, the present invention adopts following technical proposals:
A kind of double L-shaped hand with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, comprise medium substrate, the front artificial metal micro-structural being arranged at medium substrate upper surface and the back side artificial metal micro-structural be arranged on medium substrate lower surface, front artificial metal micro-structural is made up of two the L shape sheet metals being arranged at medium substrate upper surface, form planar configuration, the sheet metal of these two L-types is not connected, and a L shape sheet metal in these two L shape sheet metals overlaps with another one L shape sheet metal after revolving turnback around central point, back side artificial metal micro-structural is obtained through Space Rotating by front artificial metal micro-structural, the plane at back side artificial metal micro-structural and artificial metal micro-structural place, front forms space parallel relation, the structure of back side artificial metal micro-structural and front artificial metal micro-structural keeps mutually mirror image asymmetric.
As the preferred technical scheme of the present invention, front artificial metal micro-structural is at Z-direction translation 1.2-2.0mm, and then 90-degree rotation in XY plane, finally revolves turnback around X-axis again, namely obtains back side artificial metal micro-structural.
As the preferred technical scheme of technique scheme, medium substrate to be dielectric constant be 2.65 FB4-2.
As the preferred technical scheme of technique scheme, the material of front artificial metal micro-structural and back side artificial metal micro-structural adopts any one pure metals in gold, silver and copper or composite materials several arbitrarily respectively.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
1. double L-shaped hand of the present invention levy metamaterial microstructure be by metal structure between rotation obtain, namely the artificial metal micro-structural of medium substrate lower surface is that surface structure is passed through to obtain around different axle translations, rotation, by changing the position relationship of medium substrate upper surface and lower surface metal structure, thus change the shape of structure, make it have special electromagnetic property;
2. the structure of micro-structural of the present invention is simple, is easy to make, has good asymmetric transmission characteristic, can apply to widely in the photoelectronic devices such as light deflector, optical rotator, optical isolator in operating frequency section.
Accompanying drawing explanation
Fig. 1 is the front schematic view that the double L-shaped hand of the preferred embodiment of the present invention levies the microcellular structure of Meta Materials.
Fig. 2 is the schematic rear view that the double L-shaped hand of the preferred embodiment of the present invention levies the microcellular structure of Meta Materials.
Fig. 3 is the transmission characteristic result curve figure that the double L-shaped hand of the preferred embodiment of the present invention levies the electromagnetic simulation software CST simulation test of the microcellular structure of Meta Materials.
Fig. 4 is the asymmetric resonance characteristic result curve figure that the double L-shaped hand of the preferred embodiment of the present invention levies the electromagnetic simulation software CST simulation test of the microcellular structure of Meta Materials.
Embodiment
Details are as follows for the preferred embodiments of the present invention:
In the present embodiment, see Fig. 1 and Fig. 2, a kind of double L-shaped hand with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, comprise medium substrate 1, be arranged at the artificial copper micro-structural (2 in front of medium substrate 1 upper surface, 3) and the back side artificial metal micro-structural (4 be arranged on medium substrate 1 lower surface, 5), medium substrate 1 for dielectric constant be the FB4-2 of 2.65, front artificial metal micro-structural (2, 3) be made up of two the L shape copper sheets being arranged at medium substrate 1 upper surface, form planar configuration, the copper sheet of these two L-types is not connected, and a L shape copper sheet in these two L shape copper sheets overlaps with another one L shape copper sheet after revolving turnback around central point, back side artificial metal micro-structural (4, 5) be by front artificial metal micro-structural (2, 3) obtain through Space Rotating, i.e. front artificial metal micro-structural (2, 3) at Z-direction translation 1.2-2.0mm, namely the thickness of medium substrate is 1.2-2.0mm, then 90-degree rotation in XY plane, finally revolve turnback around X-axis again, namely back side artificial metal micro-structural (4 is obtained, 5), back side artificial metal micro-structural (4, 5) and front artificial metal micro-structural (2, 3) plane at place forms space parallel relation, back side artificial metal micro-structural (4, 5) and front artificial metal micro-structural (2, 3) structure keeps mutually mirror image asymmetric.The double L-shaped hand of the present embodiment levies the microcellular structure of Meta Materials by the rotation between metal structure, thus changes the shape of structure, makes it have good asymmetric transmission characteristic.
In the present embodiment, see Fig. 1 and Fig. 2, this is implemented the microcellular structure that double L-shaped hand levies Meta Materials and comprises three parts, medium substrate 1, back side artificial metal micro-structural (4,5) and front artificial metal micro-structural (2,3).The micro-structural on medium substrate surface is made up of the sheet metal of two L-types.The present embodiment medium substrate 1 upper and lower surface artificial metal micro-structural is obtained by translation, rotation by medium substrate different surfaces artificial metal micro-structural each other.Intercoupling between each sheet metal, can realize asymmetric transmission.By changing dielectric substrate thickness, sheet metal width, the adjustable transmission coefficient amplitude of gap width and resonance frequency size between two L.Through design, CST emulation and optimization, the double L-shaped hand be finally optimized levies metamaterial structure parameter:
L=8.6mm, a =10mm, w=0.8mm;
Double L-shaped hand based on above analysis and designation levies Meta Materials, its operating frequency be 4-20GHz, CST simulation result as shown in Figure 3 and Figure 4.In operating frequency range, transmission coefficient
with
there is very large difference,
with
always equal in whole frequency range.This result shows, dissymmetryc coefficient (
) there are two resonance points, be respectively 0.71 and 0.74.Asymmetric bandwidth is 8-18GHz, and in most of frequency range, for linearly polarized wave, the present embodiment micro-structural has comparatively obvious asymmetric transmission characteristic.According to above analysis, structure of the present invention is simple, is easy to make, has good asymmetric property, may be used for the field of photoelectric devices such as light deflector, optical isolator, light circulator, antenna and filter.
By reference to the accompanying drawings the embodiment of the present invention is illustrated above; but the invention is not restricted to above-described embodiment; multiple change can also be made according to the object of innovation and creation of the present invention; change, the modification made under all Spirit Essences according to technical solution of the present invention and principle, substitute, combination, to simplify; all should be the substitute mode of equivalence; as long as goal of the invention according to the invention; only otherwise deviate from know-why and the inventive concept that double L-shaped hand that the present invention has an asymmetric transmission characteristic levies the microcellular structure of Meta Materials, all protection scope of the present invention is belonged to.
Claims (4)
1. a double L-shaped hand with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, comprise medium substrate (1), be arranged at the front artificial metal micro-structural (2 of medium substrate (1) upper surface, 3) and the back side artificial metal micro-structural (4 be arranged on medium substrate (1) lower surface, 5), it is characterized in that: described front artificial metal micro-structural (2, 3) be made up of two the L shape sheet metals being arranged at described medium substrate (1) upper surface, form planar configuration, described in this, the sheet metal of two L-types is not connected, and a L shape sheet metal in two L shape sheet metals described in this overlaps with another one L shape sheet metal after revolving turnback around central point, described back side artificial metal micro-structural (4, 5) be by described front artificial metal micro-structural (2, 3) obtain through Space Rotating, described back side artificial metal micro-structural (4, 5) and described front artificial metal micro-structural (2, 3) plane at place forms space parallel relation, described back side artificial metal micro-structural (4, 5) and described front artificial metal micro-structural (2, 3) structure keeps mutually mirror image asymmetric.
2. the double L-shaped hand according to claim 1 with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, it is characterized in that: described front artificial metal micro-structural (2,3) at Z-direction translation 1.2-2.0mm, then 90-degree rotation in XY plane, finally revolve turnback around X-axis again, namely described back side artificial metal micro-structural (4,5) is obtained.
3. the double L-shaped hand according to claim 1 or 2 with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, it is characterized in that: described medium substrate (1) for dielectric constant be the FB4-2 of 2.65.
4. the double L-shaped hand according to claim 1 or 2 with asymmetric transmission characteristic levies the microcellular structure of Meta Materials, it is characterized in that: described front artificial metal micro-structural (2,3) and the material at described back side artificial metal micro-structural (4,5) adopt any one pure metals in gold, silver and copper or composite materials several arbitrarily respectively.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116489A (en) * | 2015-09-15 | 2015-12-02 | 中国计量学院 | Metamaterial waveguide structure high Q (quality) resonance device of asymmetric split rings |
| CN105140652A (en) * | 2015-09-17 | 2015-12-09 | 上海大学 | Chiral metamaterial micro unit structure with 90-degree polarization deflection characteristic |
| CN105911627A (en) * | 2016-05-25 | 2016-08-31 | 陕西师范大学 | Novel asymmetric transmission structure and manufacturing method thereof |
| CN106646715A (en) * | 2016-11-28 | 2017-05-10 | 南京大学 | Symmetric L-shaped metal metasurface beam splitter and preparation method |
| CN108321480A (en) * | 2018-03-05 | 2018-07-24 | 北京邮电大学 | Wide-band microwave asymmetric transmission device based on all dielectric Meta Materials |
| CN108511918A (en) * | 2018-03-13 | 2018-09-07 | 东北石油大学 | Electromagnetic wave asymmetric transmission controller based on Meta Materials |
| CN109768393A (en) * | 2019-02-22 | 2019-05-17 | 重庆邮电大学 | A kind of broadband Terahertz asymmetric transmission device based on Meta Materials |
| CN110364821A (en) * | 2019-07-26 | 2019-10-22 | 重庆邮电大学 | Ultra wide band Terahertz asymmetric transmission device |
| CN112968292A (en) * | 2021-02-07 | 2021-06-15 | 北京邮电大学 | Adjustable terahertz device and adjustable antenna |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694267A (en) * | 2011-03-25 | 2012-09-26 | 深圳光启高等理工研究院 | Isotropous meta-material |
| CN104198051A (en) * | 2014-09-18 | 2014-12-10 | 电子科技大学 | Multiband infrared metamaterial wave absorber |
-
2014
- 2014-12-26 CN CN201410827371.7A patent/CN104600434A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694267A (en) * | 2011-03-25 | 2012-09-26 | 深圳光启高等理工研究院 | Isotropous meta-material |
| CN104198051A (en) * | 2014-09-18 | 2014-12-10 | 电子科技大学 | Multiband infrared metamaterial wave absorber |
Non-Patent Citations (1)
| Title |
|---|
| DE-JUN LIU等: "Asymmetric transmission of chiral metamaterial slab with double L resonators", 《OPTICS COMMUNICATIONS》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116489A (en) * | 2015-09-15 | 2015-12-02 | 中国计量学院 | Metamaterial waveguide structure high Q (quality) resonance device of asymmetric split rings |
| CN105140652A (en) * | 2015-09-17 | 2015-12-09 | 上海大学 | Chiral metamaterial micro unit structure with 90-degree polarization deflection characteristic |
| CN105911627A (en) * | 2016-05-25 | 2016-08-31 | 陕西师范大学 | Novel asymmetric transmission structure and manufacturing method thereof |
| CN105911627B (en) * | 2016-05-25 | 2019-06-07 | 陕西师范大学 | A kind of asymmetric transmission structure and preparation method thereof |
| CN106646715B (en) * | 2016-11-28 | 2019-03-08 | 南京大学 | A kind of super structure surface beam splitter of symmetrical L shape metal and preparation method |
| CN106646715A (en) * | 2016-11-28 | 2017-05-10 | 南京大学 | Symmetric L-shaped metal metasurface beam splitter and preparation method |
| CN108321480A (en) * | 2018-03-05 | 2018-07-24 | 北京邮电大学 | Wide-band microwave asymmetric transmission device based on all dielectric Meta Materials |
| CN108511918A (en) * | 2018-03-13 | 2018-09-07 | 东北石油大学 | Electromagnetic wave asymmetric transmission controller based on Meta Materials |
| CN108511918B (en) * | 2018-03-13 | 2020-08-28 | 东北石油大学 | Electromagnetic wave asymmetric transmission controller based on metamaterial |
| CN109768393A (en) * | 2019-02-22 | 2019-05-17 | 重庆邮电大学 | A kind of broadband Terahertz asymmetric transmission device based on Meta Materials |
| CN109768393B (en) * | 2019-02-22 | 2021-11-16 | 重庆邮电大学 | Broadband terahertz asymmetric transmission device based on metamaterial |
| CN110364821A (en) * | 2019-07-26 | 2019-10-22 | 重庆邮电大学 | Ultra wide band Terahertz asymmetric transmission device |
| CN112968292A (en) * | 2021-02-07 | 2021-06-15 | 北京邮电大学 | Adjustable terahertz device and adjustable antenna |
| CN112968292B (en) * | 2021-02-07 | 2022-09-16 | 北京邮电大学 | Adjustable terahertz device and adjustable antenna |
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