CN110416736A - A kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal - Google Patents
A kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal Download PDFInfo
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- CN110416736A CN110416736A CN201910666357.6A CN201910666357A CN110416736A CN 110416736 A CN110416736 A CN 110416736A CN 201910666357 A CN201910666357 A CN 201910666357A CN 110416736 A CN110416736 A CN 110416736A
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- liquid metal
- meta materials
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- ring structure
- temperature sensitive
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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Abstract
The invention discloses a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal, including multiple periods/aperiodic arrangement array element structure；Each array element structure includes two and is arranged in parallel, the identical ring structure of size；Each ring structure includes two concentric annular dielectric material medium cavitys constituted and the liquid metal being encapsulated in medium cavity；One is equipped in dielectric cavity body for storing the hollow sphere of liquid metal, the both direction on hollow sphere towards medium cavity annular is respectively equipped with opening；Liquid metal in the ring structure A is equipped with an opening, and liquid metal is a split ring resonator in the geometry of medium cavity；Liquid metal in ring structure B is full of medium cavity.Electromagnetism Meta Materials of the invention have different electromagnetic response states at ambient and elevated temperatures, realize different functions；Its EMR electromagnetic resonance can be tuned in real time by environment temperature, and digitizing tuning and wave beam control field in electromagnetic wave has important application prospect.
Description
Technical field
The invention belongs to manual electromagnetic structure field, in particular to a kind of codified electromagnetism based on temperature sensitive liquid metal is super
Material.
Background technique
Electromagnetism Meta Materials are a kind of electromagnetic structures artificial synthesized by sub-wavelength size metallic unit, with many natures
The unusual electromagnetic property that boundary's material does not have, but it is difficult itself to have the defects that tuning, therefore large-scale industrial application is simultaneously
It is undeployed, the laboratory research stage is rested on always.It is directed to its tuning manner in recent years, researcher proposes different technologies to solve
Certainly, including load diode, liquid crystal, graphene etc..And codified electromagnetism Meta Materials the relevant technologies are further real on this basis
Digitlization tuning is showed.Codified electromagnetism Meta Materials that are of the invention designed and using are that the super material of temperature sensitive electromagnetism is controlled by temperature
Material unit come realize the digitlization to electromagnetism Meta Materials tune.The shape of temperature sensitive electromagnetism metamaterial modular construction with temperature change
Change and generate corresponding deformation, while the electromagnetic response characteristic that it is generated as metal resonance structure can also change, it can evidence
This has contacted temperature change and electromagnetic response variation, and the electromagnetism metamaterial unit under different temperatures is defined as two kinds of digital states
' 0 ' and ' 1 '.And pass through the unit of permutation and combination different digital state, total super surface or Meta Materials is obtained, each is suffered from not
Same electromagnetic response.Thus, it is possible to realize that the digitlization of electromagnetism Meta Materials tunes.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind different electricity at ambient and elevated temperatures
Magnetic response state realizes the codified electromagnetism Meta Materials based on temperature sensitive liquid metal of different functions.
The purpose of the present invention is achieved through the following technical solutions: a kind of codified electricity based on temperature sensitive liquid metal
Magnetic Meta Materials, including multiple periods/aperiodic arrangement array element structure, each array element structure includes two and sets in parallel
Set, the identical ring structure of size, each ring structure include the medium cavity that two concentric annular dielectric materials are constituted and
The liquid metal being encapsulated in medium cavity；
One is equipped in the dielectric cavity body for storing the hollow sphere of liquid metal, towards medium cavity on hollow sphere
The both direction of annular is respectively equipped with opening；
Liquid metal in the ring structure A is equipped with an opening, and liquid metal is in the geometry of medium cavity
One split ring resonator；Liquid metal in ring structure B is full of medium cavity.
Further, the liquid metal inner ring radius is 3mm-4mm, and liquid metal caliber is 0.1mm-1mm, hollow ball
Body diameter is 0.5mm-1.5mm；The arc length of liquid metal is 15mm-22mm in ring structure A.After encapsulation by two finished products
It puts together in parallel, as metamaterial modular construction, the periodic arrangement mode for being 8-12mm according to spacing between unit is prepared
The restructural codified electromagnetism Meta Materials of temperature control.
Further, the liquid metal in the ring structure A environment temperature increase when generate expansion cause opening by
It is tapered small, until opening is closed completely.
Further, the liquid metal uses the metal of higher thermal expansion coefficient.
Further, the liquid metal uses mercury or gallium-indium-tin alloy.
The beneficial effects of the present invention are:
1, a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal of the invention, have not at ambient and elevated temperatures
Same electromagnetic response state, realizes different functions；Its EMR electromagnetic resonance can be tuned in real time by environment temperature, be digitized in electromagnetic wave
Tuning and wave beam control field have important application prospect；
2, the codified electromagnetism Meta Materials of the invention based on temperature sensitive liquid metal have structure simple, temperature sensing spirit
It is quick, the wide feature of working frequency range；
3, the codified electromagnetism Meta Materials of the invention based on temperature sensitive liquid metal, used in every technology be existing
The mature technology deposited provides technical support for its batch machining.
Detailed description of the invention
Fig. 1 is the signal of the array element structure of the codified electromagnetism Meta Materials of the invention based on temperature sensitive liquid metal
Figure；
Fig. 2 is the structure chart of codified electromagnetism Meta Materials ring structure A of the present embodiment based on temperature sensitive liquid metal；
Fig. 3 is structure of the present embodiment based on the codified electromagnetism Meta Materials of temperature sensitive liquid metal under condition of different temperatures
Schematic diagram；
Fig. 4 is shown using high-frequency electromagnetic structure simulation software (HFSS) to codified electromagnetism Meta Materials array element structure
The setting schematic diagram of the numerical simulation solving model of progress；
Fig. 5 is the transmission phase number analogous diagram of mercuri codified electromagnetism metamaterial modular construction；
The super surface that Fig. 6 is made of four kinds of various combination arrangement modes；
Fig. 7 is the numerical simulation figure of mercuri codified electromagnetism Meta Materials gain in the figure all directions of the face E of 5 × 5 arrays；
Fig. 8 is the numerical simulation figure of mercuri codified electromagnetism Meta Materials gain in the figure all directions of the face H of 5 × 5 arrays；
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal, including multiple periods/aperiodic
The array element structure of arrangement；Each array element structure includes two and is arranged in parallel, the identical ring structure of size；Each ring
Shape structure includes two concentric annular dielectric material medium cavitys 1 constituted and the liquid metal being encapsulated in medium cavity 1
2；
One is equipped in the medium cavity 1 for storing the hollow sphere 3 of liquid metal, towards medium on hollow sphere 3
The both direction of cavity annular is respectively equipped with opening；
The liquid metal of (top is ring structure B in figure, and lower section is ring structure A) is equipped with one in the ring structure A
A opening, liquid metal are a split ring resonator in the geometry of medium cavity 2；Liquid metal in ring structure B fills
Full medium cavity 2.
Further, the liquid metal inner ring radius is 3mm-4mm, and liquid metal caliber is 0.1mm-1mm, hollow ball
Body diameter is 0.5mm-1.5mm；The arc length of liquid metal is 15mm-22mm in ring structure A.Fig. 2 gives the present embodiment base
In the structure chart of the codified electromagnetism Meta Materials ring structure A of temperature sensitive liquid metal；Wherein, the liquid metal inner ring radius r1
Position 4mm, liquid metal caliber r2 are 0.4mm, and hollow sphere diameter r3 is 1mm, cavity thickness 2mm.With parameter preparation
Structural unit constructs the electromagnetism Meta Materials of 5 × 5 arrays further with period 10mm.Designed cellular construction is operable with L-band
(1GHz-2GHz), S-band (2GHz-4GHz), C-band (4GHz-8GHz).
Further, the liquid metal in the ring structure A environment temperature increase when generate expansion cause opening by
It is tapered small, until opening is closed completely.And the expansion that the liquid metal in ring structure B generates when heated is due to sealed tube
Reason is locked, and is not changed.
Further, the liquid metal uses the metal of higher thermal expansion coefficient, and mercury or gallium indium tin generally can be used
Alloy.
Fig. 3 show the present embodiment based on the codified electromagnetism Meta Materials of temperature sensitive liquid metal under condition of different temperatures
Geometry schematic diagram, wherein Fig. 3 (a) be normal temperature state under geometry, be defined as digital state ' 0 '；Fig. 3 (b) is height
Geometry under temperature state is defined as digital state ' 1 '.It is to what the liquid metal filled was selected in this illustrated example
Mercury, by its thermal expansion coefficient factor gamma=(1/V0) (Δ V/ Δ T)=0.18 × 10-3/ DEG C it is found that when environment temperature it is sufficiently high
When, deformation occurs is converted to digital state ' 1 ' for split ring in digital state ' 0 ', which is had duality and can by thermal tuning
It is reconstitution, and can be tuned in real time.
Fig. 4 is shown to be asked using the numerical simulation that high-frequency electromagnetic structure simulation software (HFSS) carries out above-mentioned implementation structure
The setting schematic diagram for solving model, verifies the validity of the invention patent.The structure is located at the center of waveguide, lower wall in waveguide
For desired electrical boundary, front and rear wall is ideal magnetic boundary, and left and right wall is input and output wave port.
Fig. 5 show Numerical Simulation Analysis result of two kinds of digital state transmission phases in 1-10GHz frequency range of the structure.Number
The transmission phase difference of word state ' 0 ' and digital state ' 1 ' in two frequency ranges of 1-4GHz and 6-9GHz is held at 180 ° or so, this table
To have showed two kinds of digital state electromagnetic responses have biggish difference really, it was demonstrated that the structure is enough to be defined as the number of Binary-phase pair
Word state can synthesize codified electromagnetism Meta Materials.
Fig. 6 show the mode of four kinds of various combination arrangement metamaterial units, these four modes are divided in this example explanation
Not is defined as: digital state is all ' 0 ', and digital state is all ' 1 ', digital state ranks interval, digital state interleaved.In order to further
It is imitative to carry out numerical value to 5 × 5 array Meta Materials under these four permutation and combination using HFSS for the validity for verifying the invention patent
Very, directional diagram when these four available Meta Materials are under incidence wave irradiation.
Fig. 7 show the face the E directional diagram of four kinds of various combination arrangement Meta Materials, it can be seen that on -90 ° and 90 ° of directions,
Meta Materials corresponding to different units combination have different gains, wherein digital state is all ' 1 ' highest, digital state is all
' 0 ' is minimum, can change cellular construction by thermal tuning accordingly and enable to convert between different digital state, finally obtain
Different direction coefficients is obtained, has multifunctionality.
Fig. 8 show the face the H directional diagram of four kinds of various combination arrangement Meta Materials, on 360 ° of directions, different units combination
Meta Materials corresponding to mode have different gains, wherein digital state is all ' 1 ' highest, it is minimum that digital state is all ' 0 ', but needs
It should be noted that the former direction coefficient distribution has bigger difference with other three kinds, this makes the codified electromagnetism Meta Materials
Identification between different electromagnetic responses is higher.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill disclosed the technical disclosures can make according to the present invention and various not depart from the other each of essence of the invention
The specific variations and combinations of kind, these variations and combinations are still within the scope of the present invention.
Claims (5)
1. a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal, which is characterized in that including multiple periods/aperiodic row
The array element structure of column；Each array element structure includes two and is arranged in parallel, the identical ring structure of size；Each annular
Structure includes two concentric annular dielectric material medium cavitys (1) constituted and the liquid being encapsulated in medium cavity (1) gold
Belong to (2)；
One is equipped in the medium cavity (1) for storing the hollow sphere (3) of liquid metal, towards Jie on hollow sphere (3)
The both direction of matter cavity annular is respectively equipped with opening；
Liquid metal in the ring structure A is equipped with an opening, and liquid metal is one in the geometry of medium cavity (2)
A split ring resonator；Liquid metal in ring structure B is full of medium cavity (2).
2. a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal according to claim 1, which is characterized in that institute
Stating liquid metal inner ring radius is 3mm-4mm, and liquid metal caliber is 0.1mm-1mm, and hollow sphere diameter is 0.5mm-
1.5mm；The arc length of liquid metal is 15mm-22mm in ring structure A.
3. a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal according to claim 1, which is characterized in that institute
Stating the liquid metal in ring structure A and generating to expand when environment temperature increases causes opening to be gradually reduced, until opening is complete
Closure.
4. a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal according to claim 1, which is characterized in that institute
State the metal that liquid metal uses higher thermal expansion coefficient.
5. a kind of codified electromagnetism Meta Materials based on temperature sensitive liquid metal according to claim 4, which is characterized in that institute
Liquid metal is stated using mercury or gallium-indium-tin alloy.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682297A (en) * | 2020-06-11 | 2020-09-18 | 电子科技大学 | High Q value temperature perception asymmetric resonance structure based on liquid metal |
| CN111707391A (en) * | 2020-03-20 | 2020-09-25 | 电子科技大学 | high-Q-value temperature sensing Anapole resonance structure based on liquid metal |
| CN111740202A (en) * | 2020-06-11 | 2020-10-02 | 电子科技大学 | Quasi-electromagnetic induction transparent high-Q-value temperature sensing resonance structure based on liquid metal |
| CN111740203A (en) * | 2020-06-11 | 2020-10-02 | 电子科技大学 | High Q value temperature perception ELC resonance structure based on liquid metal |
| CN113410649A (en) * | 2021-06-18 | 2021-09-17 | 电子科技大学 | Optical-mechanical structural reflection type beam-controllable microwave super surface |
| CN113437524A (en) * | 2021-05-27 | 2021-09-24 | 北京机械设备研究所 | Multi-bit coding reconfigurable metamaterial based on liquid metal and control method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707391A (en) * | 2020-03-20 | 2020-09-25 | 电子科技大学 | high-Q-value temperature sensing Anapole resonance structure based on liquid metal |
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| CN111682297A (en) * | 2020-06-11 | 2020-09-18 | 电子科技大学 | High Q value temperature perception asymmetric resonance structure based on liquid metal |
| CN111740202A (en) * | 2020-06-11 | 2020-10-02 | 电子科技大学 | Quasi-electromagnetic induction transparent high-Q-value temperature sensing resonance structure based on liquid metal |
| CN111740203A (en) * | 2020-06-11 | 2020-10-02 | 电子科技大学 | High Q value temperature perception ELC resonance structure based on liquid metal |
| CN113437524A (en) * | 2021-05-27 | 2021-09-24 | 北京机械设备研究所 | Multi-bit coding reconfigurable metamaterial based on liquid metal and control method thereof |
| CN113410649A (en) * | 2021-06-18 | 2021-09-17 | 电子科技大学 | Optical-mechanical structural reflection type beam-controllable microwave super surface |
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Application publication date: 20191105 |