CN102393865A - Integrated design of device with three-dimensional all-medium non-resonant metamaterial structure and manufacturing process - Google Patents
Integrated design of device with three-dimensional all-medium non-resonant metamaterial structure and manufacturing process Download PDFInfo
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Abstract
The invention discloses an integrated design of a device with a three-dimensional all-medium non-resonant metamaterial structure and a manufacturing process. In the invention, the transform optics and the effective-medium theory are taken as the base, crisscrossed columns and diamond unit cells are used as a structure unit to be designed, and then the three-dimensional full-medium metamaterial structure with super broadband, low loss, easiness in three-dimensional expansion and the like is obtained; a photocuring rapid prototyping process is adopted for realizing the integrated design and the manufacture of the all-medium non-resonant three-dimensional metamaterial structure at a microwave frequency band (GHz); and a set of process method of integrated design and the manufacture of microscopic unit organizations and macroscopic three-dimensional structures for microwave invisible devices is set up.
Description
Technical field
The invention belongs to the stealthy ultra material technology of microwave field, relate to and utilize the quick shaping manufacturing technology to prepare the stealthy ultra material of microwave, the integrated design and the manufacturing process of the full medium disresonance of particularly a kind of three-dimensional metamaterial structure.
Background technology
In June, 2006; J.B.Pendry and D.R.Smith publish an article on the U.S. " Science " magazine and point out; Through designing local cellular construction characteristic; The metamaterial structure that (" just " perhaps " the born ") spatial gradient that can obtain to have the specific electromagnetic wave refractive index distributes, thus realize control to the electromagnetic wave propagation direction.In November in the same year, D.R.Smith research group adopts split ring resonator to construct the metamaterial structure of two-dimentional ring-type, first through experimental verification in the feasibility of microwave frequency band electromagnetic wave stealth.This new discovery is chosen as one of 2006 year ten big technological breakthroughs by the U.S. " Science " magazine.At present; Ultra material is used for the electromagnetic wave stealth and also rests on theoretical research and experimental verification stage; Also has a very long segment distance from practical application; This technology will be in case the acquisition breakthrough will have ample scope for one's abilities in weaponry stealth and camouflage, and realization electromagnetic wave stealth aircraft, stealthy submarine, stealthy spacecraft truly will be no longer a dream.Aspect civilian; Ultra material will produce significant effects to future communications, radar, microelectronics and medical imaging aspect; Like the microwave protection of visual plant, have various microwave devices such as super lens (dragon uncle lens, Eton lens), the resonator etc. of special performance.If the controlled ultra investigation of materials of refractive index obtains to break through and to the device direction development, it brings great change will for people's life so, has very big economy and society meaning.
There is not the ultra material of this heterogeneous texture in occurring in nature; All metamaterial structures all need design and make according to the actual requirements; Therefore, the metamaterial structure design that has a refractive index gradient becomes electromagnetic wave stealth hot research fields and difficult point with manufacturing process.The controllability of electromagnetic field and the macrostructure of ultra material, refractive index gradient distribute, material dielectric constant is relevant, and the Gradient distribution of refractive index is determined by factors such as the microscopic characteristics of ultra material cell, structural parameters.Seeing that the diversity and the complicacy of the microscopic units structure/space topological structure/profile of ultra material, the metamaterial structure that makes manufacturing can control the electromagnetic wave propagation direction is faced with great challenge.
At present, ultra material cell structure mainly is the basis with the split ring resonator unit, and it can only be in single-frequency work, and loss is higher.The ultra material of full medium disresonance of development has characteristics such as high-level efficiency, low-loss, wideband and isotropic gradually.Typical disresonance metamaterial structure and manufacturing process thereof mainly contain successively build up process, minute manufacturing technology and fast shaping technology etc.Successively build up process mainly adopts dielectric-slab (F4B-teflon) as starting material; Through successively making elementary layer (like methods such as punchings) with typical structure; The mode of then successively piling up again is assembled into required metamaterial structure; Finally construct one at two-dimensional space isotropic " blanket type is stealthy " (Carpet Cloak) metamaterial structure, this kind technology is mainly adopted by the Smith professor team of Duke University and the Cui Tiejun professor team of China Southeast China University; Minute manufacturing technology mainly is to adopt technology such as micromachined, electron beam lithography, is that starting material are processed with the Si layer, obtains at optics frequency range effective " blanket type invisible structure "; The Wegener of Karlsruhe, Germany polytechnical university (Karlsruhe Institute of Technology) professor research team adopts the method for laser direct-writing (Direct laser writing); Produced and had the ultra material of three-dimensional of piling up wooden micromechanism; First RP technique has been applied in the middle of the manufacturing process of ultra material, has realized in wavelength 1.4～2.7 micrometer ranges stealth nonpolarized light.This structure is a kind of macroscopical two-dimensional flat plate " blanket type is stealthy " structure with three-dimensional microcosmic structure.
" blanket type is stealthy " (Carpet Cloak) structure that existing technology is prepared all is two-dimensional flat plate structures on the macroscopic view, and the macroscopical three-dimensional invisible structure that this structure and J.B Pendry are proposed in " controllable electromagnetic field " literary composition greatly differs from each other.Realize the ultra material of true three-dimensional, must have breakthrough aspect dielectric material and the processing technology, solve the manufacturing difficult problem of the three-dimensional metamaterial structure that complicated microcosmic/macroscopical profile brings.In addition, existing difficult technique is to realize the device of metamaterial structure, and the macrostructure of all ultra materials is all fairly simple at present, can't directly be used on the stealthy device of electromagnetic wave.Realize the device of ultra material, must solve its complicated outside macrostructure and internal microstructure integrated design and manufacturing issue.
Summary of the invention
The problem that the present invention solves is to provide the integrated design and the manufacturing process of the full medium disresonance of a kind of three-dimensional metamaterial structure device; Give full play to the integrated design and the manufacturing advantage of quick shaping manufacturing technology, realize the integrated design and the manufacturing of the three-dimensional metamaterial structure of full medium disresonance at microwave frequency band (GHz).
The present invention realizes through following technical scheme:
The integrated design and the manufacturing process of three-dimensional full medium disresonance metamaterial structure device may further comprise the steps:
1) according to the designing requirement of metamaterial structure device, it is carried out the design of three-dimensional profile macrostructure, obtain the macro contours model;
2),, calculate and obtain the refraction of electromagnetic wave rate spatial distribution map of three-dimensional metamaterial structure device through based on transform optics principle and the theoretical numerical computation method of quasi-conformal mapping according to the exterior contour model;
Electromagnetic wave working frequency range based on the metamaterial structure device requirement; Confirm working frequency range wavelength and discrete unit magnitude proportion by EFFECTIVE MEDIUM THEORY; And calculating gained refractive index spatial distribution map is carried out discretization by corresponding discrete unit size handle, obtain the equivalent electric magnetic wave refractive index at each discrete unit place;
3) adopting right-angled intersection post or adamas photon crystal structure is the microscopic units structure at discrete unit place, calculates the dutycycle of microscopic units structure and the relation between its equivalent electric magnetic wave refractive index by EFFECTIVE MEDIUM THEORY then;
4) according to the refraction of electromagnetic wave rate space distribution of three-dimensional metamaterial structure device; According to the dutycycle of microscopic units structure and the relation between its equivalent electric magnetic wave refractive index; Fill corresponding discrete unit place ultra material microstructure unit with having corresponding refractive index; Again the space cell structure of discretize is carried out connection processing and topology design, thereby realize the integrated design of three-dimensional metamaterial structure device, obtain the three-dimensional data model file of three-dimensional metamaterial structure device;
5) file that the three-dimensional data model file conversion can be discerned for the photocureable rapid shaping system; Import in the photocureable rapid shaping system; With the liquid light-cured resin is raw material, adopts the method for layering photocuring to prepare resin-based three-dimensional metamaterial structure device;
6) on resin-based three-dimensional metamaterial structure device, install relevant auxiliary component additional, accomplish three-dimensional full medium disresonance metamaterial structure preparation of devices.
The refraction of electromagnetic wave rate space distribution of described three-dimensional metamaterial structure device is by numerical evaluation n
2=ε=1/det (A) obtains, and wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix of two transformed spaces in the quasi-conformal mapping numerical procedure, and det (A) is its determinant
The dutycycle of described calculating microscopic units structure and the relation between its equivalent refractive index are:
At first calculate the individual features size of right-angled intersection pole unit structure or adamas photonic crystal elements structure and the relation of its medium dutycycle;
And then according to EFFECTIVE MEDIUM THEORY, by formula ε=f+ ε
dMapping relations between the feature size of (1-f) calculating the microscopic units structure and the corresponding equivalent electric magnetic wave refractive index, wherein ε is an effective dielectric constant, f is the medium dutycycle, ε
dBe photosensitive resin material specific inductive capacity to be filled.
Saidly also the space cell structure of discretize is carried out the design of periodization connection processing and three-dimensional topology.
The integrated design and the manufacturing process of the full medium disresonance of described three-dimensional metamaterial structure device specifically may further comprise the steps:
1) according to the designing requirement of the structure and the size of metamaterial structure device, it is carried out the design of three-dimensional profile macrostructure, obtain its exterior contour model;
2), utilize transform optics principle and quasi-conformal mapping theoretical, by numerical evaluation n according to the exterior contour model
2The refraction of electromagnetic wave rate space distribution of the three-dimensional metamaterial structure device of=ε=1/det (A), wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix of two transformed spaces in the quasi-conformal mapping numerical procedure, and det (A) is its determinant;
3) based on the electromagnetic wave working frequency range of metamaterial structure device requirement; Confirm the size of working frequency range wavelength and discrete unit by EFFECTIVE MEDIUM THEORY; And calculating gained refractive index spatial distribution map is carried out discretization by corresponding discrete unit size handle, obtain the equivalent electric magnetic wave refractive index at each discrete unit place;
4) adopting right-angled intersection post or adamas photon crystal structure is the microscopic units structure at discrete unit place; Calculate right-angled intersection pole unit structure or the individual features size of adamas photonic crystal elements structure and the relation of its medium dutycycle; Again according to EFFECTIVE MEDIUM THEORY, by formula ε=f+ ε
d(1-f) mapping relations between the equivalent electric magnetic wave refractive index of the feature size correspondence of calculating basic structural unit, wherein f is the medium dutycycle, ε
dBe the photosensitive resin material specific inductive capacity;
5) according to the refraction of electromagnetic wave rate space distribution of three-dimensional metamaterial structure device; According to the feature size of basic structural unit and the mapping relations between its equivalent electric magnetic wave refractive index; The structural unit that employing has a corresponding equivalent refractive index is realized the space distribution of refractive index in the device; Again the space cell structure of discretize is carried out connection processing and topology design, thereby realize the integrated design of three-dimensional metamaterial structure device, obtain device cad model file;
6) the cad model file conversion with three-dimensional metamaterial structure device becomes the STL formatted file, imports in the photocureable rapid shaping system with the form of stl file, at first adds to support and the layering processing; And individual-layer data is uploaded in the laser controlling program; With the liquid light-cured resin is raw material, adopts the method for layering photocuring to prepare the metamaterial structure device fast, and the device that obtains is rinsed well; Remove the remaining liquid resin in surface, obtain the three-dimensional metamaterial structure device of resin-based;
7) on resin-based three-dimensional metamaterial structure device, install relevant auxiliary component additional, accomplish three-dimensional full medium disresonance metamaterial structure preparation of devices.
Compared with prior art, the present invention has following beneficial technical effects and significant technological merit:
The integrated design and the manufacturing process of the full medium disresonance of three-dimensional provided by the present invention metamaterial structure device; Be to be the basis, realize the integrated design and the manufacturing of the three-dimensional metamaterial structure device of full medium disresonance at microwave frequency band (GHz) with the light-cured rapid prototype method; Give full play to the integrated design and the manufacturing advantage of quick shaping manufacturing technology, set up microscopic units tissue and the macroscopical three-dimensional structure incorporate method for designing of a cover towards the stealthy device of microwave.The present invention adopts right-angled intersection post and diamond units structure as basic microscopic units structure, has low-loss, ultra wideband in microwave section (GHz), is convenient to advantage such as three-dimensional expansion.
Description of drawings
Fig. 1 is the synoptic diagram of right-angled intersection cellular construction model;
Fig. 2 is the mapping relations figure between right-angled intersection pole unit structural column radius R and the corresponding equivalent electric magnetic wave refractive index;
Fig. 3 is the synoptic diagram based on the stealthy carpet model of right-angled intersection unit;
Fig. 4 is the synoptic diagram of adamas photonic crystal elements structural model;
Fig. 5 be adamas photon crystal structure lattice lattice point joint pin radius R with corresponding equivalent electric magnetic wave refractive index between mapping relations figure;
Shown in Figure 6 is synoptic diagram based on the stealthy carpet model of adamas photonic crystal elements;
Embodiment
The present invention is the basis with the light-cured rapid prototype method, and the integrated design and the manufacturing process of three-dimensional full medium disresonance metamaterial structure device is provided.Below in conjunction with concrete embodiment and accompanying drawing the present invention is done further detailed description, said is to explanation of the present invention rather than qualification.
Embodiment 1
Adopt right-angled intersection rod structure (with reference to Fig. 1) to carry out stealthy carpet design and make, specifically may further comprise the steps for basic microscopic units:
1) structure of metamaterial structure device is stealthy carpet, the designing requirement of size: macro-size is long 125mm, high 48mm, and thick 9mm, the stealthy zone of design is long 125mm, the isosceles triangle of high 13mm; It is carried out the design of three-dimensional profile macrostructure, obtain its exterior contour model;
2) according to designing stealthy carpet macroscopic view contour structures and size in the step 1); Stealthy regional refractive index spatial with transform optics principle and the stealthy carpet of quasi-conformal mapping Theoretical Calculation distributes, and the refractive index spatial in concrete stealthy zone distributes and calculated by following formula: n
2=ε=1/det (A);
Wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix from coffin to stealthy carpet contour structures space in the quasi-conformal mapping numerical procedure, and det (A) is its determinant;
3) the working frequency range center in the stealthy zone of design is 10GHz; Adopt EFFECTIVE MEDIUM THEORY to confirm wavelength and discrete unit size (10: 1 relations); Get its discrete unit size and be 3mm * 3mm; Carry out the discretize processing to calculating the gained refractive index profile by the discrete unit of 3mm * 3mm, obtain the equivalent electric magnetic wave refractive index at each discrete unit place;
4) utilizing 3 d modeling software computing unit cycle a is the relation of lattice lattice point joint pin radius R and its medium dutycycle for the individual features size of the right-angled intersection pole unit structure of 3mm, again according to EFFECTIVE MEDIUM THEORY, by formula ε=f+ ε
d(1-f) calculate mapping relations between column radius R and the corresponding equivalent electric magnetic wave refractive index; Wherein, wherein f is the medium dutycycle, ε
dBe the photosensitive resin material specific inductive capacity, specifically with SOMOS14120 (DSM) as photosensitive resin material, ε
d=3.5, result of calculation is as shown in Figure 5;
5) adopting the right-angled intersection post is the microscopic units structure at discrete unit place; According to the mapping relations between column radius R that is set up in the step 3) and the equivalent electric magnetic wave refractive index; To step 2) in the discretize result that distributes of the refractive index spatial that gets of designing institute carry out structure and realize; Promptly adopt structural unit to realize the space distribution of refractive index in the device with respective indices of refraction; At last the space cell structure of these discretizes is carried out the periodization post connection processing and the three-dimensional topology design of right-angled intersection pole unit structure, thereby realize the integrated design of stealthy carpet, obtain device cad model file (with reference to Fig. 6);
6) import to the cad model of stealthy carpet backing and installation system in the photocureable rapid shaping machine (SPS600B, the permanent logical intelligent company limited in Shaanxi) with the form of stl file, in computer software, accomplish layering and add pre-treatment step such as support; With liquid photosensitive resin (SOMOS14120; DSM) be starting material, adopt the method for layering photocuring to prepare the metamaterial structure device fast, cleaning uncured resin after curing is accomplished; Remove the remaining liquid resin in surface, obtain resin-based stealthy carpet;
7) will with the stealthy zone of the stealthy carpet of aluminum isosceles triangle reflection of electromagnetic wave plate (long 125mm, high 13mm, thick 9mm) the embedded resin base of size such as stealthy zone, finally obtain stealthy carpet backing and installation system device.
Embodiment 2
Adopt adamas photon crystal structure (with reference to Fig. 4) to carry out stealthy carpet design and make, specifically may further comprise the steps for basic microscopic units:
1) structure of metamaterial structure device is stealthy carpet, the designing requirement of size: macro-size is long 250mm, high 96mm, and thick 6mm, the stealthy zone of design is long 250mm, the isosceles triangle of high 26mm; It is carried out the design of three-dimensional profile macrostructure, obtain its exterior contour model;
2) according to designing stealthy carpet macroscopic view contour structures and size in the step 1); Stealthy regional refractive index spatial with transform optics principle and the stealthy carpet of quasi-conformal mapping Theoretical Calculation distributes, and the refractive index spatial in concrete stealthy zone distributes and calculated by following formula: n
2=ε=1/det (A);
Wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix from coffin to stealthy carpet contour structures space in the quasi-conformal mapping numerical procedure, and det (A) is its determinant.
3) the working frequency range center in the stealthy zone of design is 5GHz; Getting its discrete unit is 6mm * 6mm; Adopt EFFECTIVE MEDIUM THEORY to confirm the relation (10: 1 relations) of wavelength and discrete unit size; Get its discrete unit size and be 6mm * 6mm, carry out the discretize processing by the discrete unit of 6mm * 6mm, obtain the equivalent electric magnetic wave refractive index at each discrete unit place calculating the gained refractive index profile;
4) utilizing 3 d modeling software (Pro/E) computing unit lattice period a is that the individual features size of the diamond lattic structure photonic crystal elements structure of 6mm is the relation of column radius R and its medium dutycycle; Again according to EFFECTIVE MEDIUM THEORY, calculate the mapping relations between column radius R and the corresponding equivalent electric magnetic wave refractive index by formula ε=f+ ε d (1-f); Wherein, wherein f is the medium dutycycle, and ε d is the photosensitive resin material specific inductive capacity, specifically with SOMOS14120 (DSM) as photosensitive resin material, ε
d=3.5, result of calculation is as shown in Figure 2;
5) adopting the diamond lattic structure photonic crystal elements is the microscopic units structure at discrete unit place; According to the mapping relations between column radius R that is set up in the step 3) and the equivalent electric magnetic wave refractive index; To step 2) in the discretize result that distributes of the refractive index spatial that gets of designing institute carry out structure and realize; Promptly adopt structural unit to realize the space distribution of refractive index in the device with respective indices of refraction; At last to the space cell structure of these discretizes carry out the diamond lattic structure photonic crystal elements the design of periodization post connection processing and three-dimensional topology, thereby realize the integrated design of stealthy carpet, obtain device cad model file (with reference to Fig. 3);
6) import to the cad model of stealthy carpet backing and installation system in the photocureable rapid shaping machine (SPS600B, the permanent logical intelligent company limited in Shaanxi) with the form of stl file, in computer software, accomplish layering and add pre-treatment step such as support; With liquid photosensitive resin (SOMOS14120; DSM) be starting material, adopt the method for layering photocuring to prepare the metamaterial structure device fast, cleaning uncured resin after curing is accomplished; Remove the remaining liquid resin in surface, obtain resin-based stealthy carpet;
Will with the stealthy zone of the stealthy carpet of aluminum isosceles triangle reflection of electromagnetic wave plate (long 250mm, high 26mm, thick 6mm) the embedded resin base of size such as stealthy zone, finally obtain stealthy carpet backing and installation system device.
Claims (5)
1. the integrated design and the manufacturing process of three-dimensional full medium disresonance metamaterial structure device is characterized in that, may further comprise the steps:
1) according to the designing requirement of metamaterial structure device, it is carried out the design of three-dimensional profile macrostructure, obtain the macro contours model;
2),, calculate and obtain the refraction of electromagnetic wave rate spatial distribution map of three-dimensional metamaterial structure device through based on transform optics principle and the theoretical numerical computation method of quasi-conformal mapping according to the exterior contour model;
Electromagnetic wave working frequency range based on the metamaterial structure device requirement; Confirm working frequency range wavelength and discrete unit magnitude proportion by EFFECTIVE MEDIUM THEORY; And calculating gained refractive index spatial distribution map is carried out discretization by corresponding discrete unit size handle, obtain the equivalent electric magnetic wave refractive index at each discrete unit place;
3) adopting right-angled intersection post or adamas photon crystal structure is the microscopic units structure at discrete unit place, calculates the dutycycle of microscopic units structure and the relation between its equivalent electric magnetic wave refractive index by EFFECTIVE MEDIUM THEORY then;
4) according to the refraction of electromagnetic wave rate space distribution of three-dimensional metamaterial structure device; According to the dutycycle of microscopic units structure and the relation between its equivalent electric magnetic wave refractive index; Fill corresponding discrete unit place ultra material microstructure unit with having corresponding refractive index; Again the space cell structure of discretize is carried out connection processing and topology design, thereby realize the integrated design of three-dimensional metamaterial structure device, obtain the three-dimensional data model file of three-dimensional metamaterial structure device;
5) file that the three-dimensional data model file conversion can be discerned for the photocureable rapid shaping system; Import in the photocureable rapid shaping system; With the liquid light-cured resin is raw material, adopts the method for layering photocuring to prepare resin-based three-dimensional metamaterial structure device;
6) on resin-based three-dimensional metamaterial structure device, install relevant auxiliary component additional, accomplish three-dimensional full medium disresonance metamaterial structure preparation of devices.
2. the integrated design and the manufacturing process of the full medium disresonance of three-dimensional as claimed in claim 1 metamaterial structure device is characterized in that the refraction of electromagnetic wave rate space distribution of described three-dimensional metamaterial structure device is by numerical evaluation n
2=ε=1/det (A) obtains, and wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix of two transformed spaces in the quasi-conformal mapping numerical procedure, and det (A) is its determinant.
3. the integrated design and the manufacturing process of the full medium disresonance of three-dimensional as claimed in claim 1 metamaterial structure device is characterized in that the dutycycle of described calculating microscopic units structure and the relation between its equivalent refractive index are:
At first calculate the individual features size of right-angled intersection pole unit structure or adamas photonic crystal elements structure and the relation of its medium dutycycle;
And then according to EFFECTIVE MEDIUM THEORY, by formula ε=f+ ε
dMapping relations between the feature size of (1-f) calculating the microscopic units structure and the corresponding equivalent electric magnetic wave refractive index, wherein ε is an effective dielectric constant, f is the medium dutycycle, ε
dBe photosensitive resin material specific inductive capacity to be filled.
4. the integrated design and the manufacturing process of the full medium disresonance of three-dimensional as claimed in claim 1 metamaterial structure device is characterized in that, also the space cell structure of discretize are carried out periodization connection processing and three-dimensional topology design.
5. the integrated design and the manufacturing process of the full medium disresonance of three-dimensional as claimed in claim 1 metamaterial structure device is characterized in that, specifically may further comprise the steps:
1) according to the designing requirement of the structure and the size of metamaterial structure device, it is carried out the design of three-dimensional profile macrostructure, obtain its exterior contour model;
2), utilize transform optics principle and quasi-conformal mapping theoretical, by numerical evaluation n according to the exterior contour model
2The refraction of electromagnetic wave rate space distribution of the three-dimensional metamaterial structure device of=ε=1/det (A), wherein n is a refractive index, and ε is an effective dielectric constant, and A is the Jacobi matrix of two transformed spaces in the quasi-conformal mapping numerical procedure, and det (A) is its determinant;
3) based on the electromagnetic wave working frequency range of metamaterial structure device requirement; Confirm the size of working frequency range wavelength and discrete unit by EFFECTIVE MEDIUM THEORY; And calculating gained refractive index spatial distribution map is carried out discretization by corresponding discrete unit size handle, obtain the equivalent electric magnetic wave refractive index at each discrete unit place;
4) adopting right-angled intersection post or adamas photon crystal structure is the microscopic units structure at discrete unit place; Calculate right-angled intersection pole unit structure or the individual features size of adamas photonic crystal elements structure and the relation of its medium dutycycle; Again according to EFFECTIVE MEDIUM THEORY, by formula ε=f+ ε
d(1-f) mapping relations between the equivalent electric magnetic wave refractive index of the feature size correspondence of calculating basic structural unit, wherein f is the medium dutycycle, ε
dBe the photosensitive resin material specific inductive capacity;
5) according to the refraction of electromagnetic wave rate space distribution of three-dimensional metamaterial structure device; According to the feature size of basic structural unit and the mapping relations between its equivalent electric magnetic wave refractive index; The structural unit that employing has a corresponding equivalent refractive index is realized the space distribution of refractive index in the device; Again the space cell structure of discretize is carried out connection processing and topology design, thereby realize the integrated design of three-dimensional metamaterial structure device, obtain device cad model file;
6) will become the STL formatted file to the cad model file conversion of three-dimensional metamaterial structure device, import in the photocureable rapid shaping system, and at first add and support and the layering processing with the form of stl file; And individual-layer data is uploaded in the laser controlling program; With the liquid light-cured resin is raw material, adopts the method for layering photocuring to prepare the metamaterial structure device fast, and the device that obtains is rinsed well; Remove the remaining liquid resin in surface, obtain the three-dimensional metamaterial structure device of resin-based;
7) on resin-based three-dimensional metamaterial structure device, install relevant auxiliary component additional, accomplish three-dimensional full medium disresonance metamaterial structure preparation of devices.
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