CN102476458B - Metamaterial preparation method - Google Patents
Metamaterial preparation method Download PDFInfo
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- CN102476458B CN102476458B CN201110111170.3A CN201110111170A CN102476458B CN 102476458 B CN102476458 B CN 102476458B CN 201110111170 A CN201110111170 A CN 201110111170A CN 102476458 B CN102476458 B CN 102476458B
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Abstract
The invention relates to a metamaterial preparation method. In the preparation method, a metamaterial is prepared by utilizing the liquid state phase change characteristic of a polymer material and adopting a semisolid shaping technique. The steps in the method are realized by adopting simple and feasible processes according to the self characteristics of the metamaterial, and various high-pressure and high-temperature equipment and precision computerized control equipment are not needed, thus the method is simple in process, convenient for operation and low in cost and is suitable for mass production.
Description
Technical field
The present invention relates to a kind of material preparation method, particularly relate to a kind of Meta Materials preparation method.
Background technology
Meta Materials be a kind of with artificial metal's structure for elementary cell and carry out in a specific way spatial arrangement have special electromagnetic response new material.The character of Meta Materials and function determine primarily of its inner metal structures, how accurately to prepare the key that the three-dimensional structure with periodic arrangement becomes Meta Materials technology of preparing.
Trickle process technology at present for three-dimensional microstructures processing has conventional mechanical processing technology and photoetching process, in the prior art, especially with the fastest developing speed with photoetching process, the trickle processing technology of such as femtosecond laser th ree-dimensional, this technique is a novel three-dimensional process technology integrating ultrafast laser technique, microscopy, high-precision three-dimensional mobile technology and Computer Control Technology, and it can carry out three-dimensional retrofit in transparent matrix material.And for example LIGA processing technology, this technique carries out three-dimensional retrofit in conjunction with Deep lithography, plating, die casting three kinds of technology.But the expensive and complicated operation of technical equipment required for those processing technologys, seriously constrains the development of Meta Materials.
Summary of the invention
The technical problem that the present invention solves is, for above-mentioned the deficiencies in the prior art, proposes simple, easy to operate, the with low cost and Meta Materials preparation method of applicable batch production of a kind of technique.
The technical solution adopted for the present invention to solve the technical problems proposes a kind of Meta Materials preparation method, and it comprises step:
Steps A: the artificial metal structure in inside inner needed for this Meta Materials makes sheet metal;
Step B: those sheet metals are bonded in solid-state polymer material matrix by this Meta Materials inner artificial metal structure flat orientation arrangement requirement binding agent to form multiple substrate with sheet metal array structure respectively;
Step C: the plurality of substrate with sheet metal array structure is fixed in mould by this Meta Materials inner artificial metal structure stereo omnibearing arrangement requirement;
Step D: inject in this mould with the liquid macroimolecule material of the identical material of this solid-state polymer material matrix to fill up this mould remaining space;
Step e: heating, makes this solid-state polymer material matrix become semisolid with this liquid macroimolecule material and finally form homogeneous phase macromolecular material matrix;
Step F: this Meta Materials can be formed after cooling.
Also comprise between step e and step F extruding this homogeneous phase macromolecular material matrix step with make those sheet metals and this homogeneous phase macromolecular material substrate contact more tight.
Inject this liquid macroimolecule material by pressureless infiltration process in step D.
Binding agent in step B is epoxy resin or polyurethane or acrylate.
The material of this solid-state polymer material matrix and this liquid macroimolecule material is polyimides.
In steps A, those sheet metals are made by silk screen process, photochemistry etching, laser melting coating Wiring technique or laser induction chemical plating.
In step C, the plurality of substrate with sheet metal array structure is fixed in this mould by manual operations.
In step e, heating-up temperature is 170 ° to 190 °.
The inner artificial metal structure of this Meta Materials be " ten " font or
font or " work " font or " returning " font.
The inner artificial metal structure of this Meta Materials to be included in three dimensions between two vertically and totally one intersection point three the first sheet metals, be connected to these the first sheet metal two ends each and perpendicular to this first sheet metal the second sheet metal, be connected to these the second sheet metal two ends each and perpendicular to the 3rd sheet metal of this second sheet metal, the rest may be inferred.
The each step of Meta Materials preparation method of the present invention adopts the technique of simple possible, and without the need to all kinds of high-voltage high-temperature equipment and sophisticated computer control appliance, therefore it has extraordinary practicality, and technique is simple, easy to operate, with low cost, is applicable to batch production.
Accompanying drawing explanation
Fig. 1 is the top view of the substrate formed after bonding all kinds of sheet metal on matrix;
Multiple planar substrates is fixed on the side view in mould by Fig. 2;
Fig. 3 is the side view multiple planar substrates and vertical substrate are fixed in mould;
Fig. 4 is the side view being only fixed with planar substrates in mould and not yet heating after filling liquid polyimides;
Fig. 5 is only fixed with the liquid polyimides of planar substrates and solid matrix polyimides and finally forms homogeneous phase and the Meta Materials side view formed after cooling in mould;
Fig. 6 is the integrated artistic flow chart of Meta Materials preparation method of the present invention;
Fig. 7 prepares by preparation method of the present invention a kind of metamaterial structure schematic diagram got.
Fig. 8 is the inner artificial metal structure perspective view of Meta Materials shown in Fig. 7
Detailed description of the invention
Technology contents of the present invention is described in detail below in conjunction with accompanying drawing.
Meta Materials is made up of on matrix according to ad hoc fashion periodic arrangement artificial metal's structure with certain pattern form.The pattern form that artificial metal's structure is different and arrangement mode make Meta Materials have different electromagnetic responses thus make Meta Materials realize various different specific function.
In the preparation process of Meta Materials, the inner artificial metal structure of Meta Materials corresponding to first the present invention needs according to Meta Materials function makes the sheet metal 1 of various special shape, and those sheet metals 1 combine the inner artificial metal structure of this Meta Materials of rear formation; The technique making the sheet metal 1 of those special shapes includes but not limited to: silk screen process, photochemistry etching, laser melting coating Wiring technique or laser induction chemical plating.And when the inner man-made microstructure of Meta Materials is planar structure, by one-body molded for whole topological pattern, also planar structure can be decomposed; When the inner man-made microstructure of Meta Materials is three-dimensional structure, the inside man-made microstructure in three planes that three-dimensional structure is corresponding also can be overall one-body molded or all decompose.
Secondly those sheet metals 1 are bonded in solid-state polymer material matrix 2 with binding agent to form multiple substrate 3 with sheet metal array structure respectively by this Meta Materials inner artificial metal structure flat orientation arrangement requirement, as shown in Figure 1, Fig. 1 is the top view of the substrate 3 formed after bonding all kinds of sheet metal 1 on matrix 2.The clean and dry of solid-state polymer material matrix 2 should be ensured before gluing.Binding agent can adopt conventional epoxy resin or the binding agent such as polyurethane or acrylate.Because Meta Materials itself there is no particular/special requirement for substrate material, therefore solid-state polymer material matrix 2 can adopt and common can to make the macromolecular material of liquid phase-change arbitrarily, adopts polyimides in the present embodiment.
Secondly the plurality of substrate 3 with sheet metal array structure is fixed in mould 4 by this Meta Materials inner artificial metal structure stereo omnibearing arrangement requirement.When the inner man-made microstructure of Meta Materials is planar structure, only need to place substrate 3 at mould interior-layer layer, as shown in Figure 2, Fig. 2 is the side view be fixed on by multiple planar substrates 3 in mould 4.But also need to place the vertical substrate 3 ' perpendicular to planar substrates 3 when the inner man-made microstructure of Meta Materials is three-dimensional structure, as shown in Figure 3, Fig. 3 is the side view multiple planar substrates 3 and vertical substrate 3 ' are fixed in mould 4.Binding metal sheet 1, fixing base 3 and/or substrate 3 ' all can adopt manual operations or utilize simple clamp tool to realize.
Liquid polyimides is injected until fill up this mould remaining space in this mould 4; Pressureless infiltration process is adopted to make liquid polyimides in not stressed situation by infiltrating the capillary pressure spontaneous infiltration that causes and filling up this mould remaining space in the present embodiment.As shown in Figure 4, Fig. 4 is the side view being only fixed with planar substrates 3 in mould 4 and not yet heating after filling liquid polyimides.
Heating this mould and controlling heating-up temperature makes solid polyimide and liquid polyimides present semisolid and finally form homogeneous phase, adopts Electric heating to heat this mould and make heating-up temperature for 170 ° to 190 ° to ensure to form the temperature conditions needed for semisolid polyimides by Computer Control Technology in the present embodiment; The polyimides of homogeneous phase constitutes the matrix of Meta Materials, extrudes this homogeneous phase polyimides and makes the sheet metal of polyimides inside contact with this homogeneous phase polyimides more tight and can discharge the air injecting liquid polyimides and may not drain to step in mould; Meta Materials can be formed according to after the size cooling number hour of Meta Materials.As shown in Figure 5, Fig. 5 be only be fixed with planar substrates 3 in mould and liquid polyimides and solid matrix polyimides finally formed homogeneous phase and cooling after formed Meta Materials side view.
Fig. 6 is the integrated artistic flow chart of Meta Materials preparation method of the present invention.
Fig. 7 is the inner artificial metal structure perspective view of Meta Materials shown in Fig. 7 for being prepared a kind of metamaterial structure schematic diagram, Fig. 8 of getting by preparation method of the present invention.Artificial metal's structure 10 entirety is embedded in homogeneous phase macromolecular material matrix 20, to be included in three dimensions between two three the first sheet metals 101 of vertically and totally one intersection point, to be connected to these the first sheet metal 101 two ends each and perpendicular to the second sheet metal 102 of this first sheet metal 101.
Because the inner artificial metal structure of Meta Materials is grade material, without the need to very high processing fineness, therefore each step of Meta Materials preparation method of the present invention adopts the technique of simple possible, without the need to all kinds of high-voltage high-temperature equipment and sophisticated computer control appliance, therefore it has extraordinary practicality, and technique is simple, easy to operate, with low cost, be applicable to batch production.
In the above-described embodiments, only to invention has been exemplary description, but those skilled in the art can carry out various amendment to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (8)
1. a Meta Materials preparation method, is characterized in that: comprise step:
Steps A: the artificial metal structure in the inside needed for this Meta Materials makes sheet metal;
Step B: those sheet metals are bonded in solid-state polymer material matrix by this Meta Materials inner artificial metal structure flat orientation arrangement requirement binding agent to form multiple substrates with sheet metal array structure respectively;
Step C: the plurality of substrate with sheet metal array structure is fixed in mould by this Meta Materials inner artificial metal structure stereo omnibearing arrangement requirement;
Step D: inject in this mould with the liquid macroimolecule material of the identical material of this solid-state polymer material matrix to fill up this mould remaining space;
Step e: heating, makes this solid-state polymer material matrix become semisolid with this liquid macroimolecule material and finally form homogeneous phase macromolecular material matrix;
Step F: this Meta Materials can be formed after cooling;
Wherein, the inner artificial metal structure of Meta Materials is " ten " font or " L " font or " work " font or " returning " font.
2. Meta Materials preparation method as claimed in claim 1, is characterized in that: the step also comprising this homogeneous phase macromolecular material matrix of extruding between step e and step F with make those sheet metals and this homogeneous phase macromolecular material substrate contact more tight.
3. Meta Materials preparation method as claimed in claim 1, is characterized in that: be inject this liquid macroimolecule material by pressureless infiltration process in step D.
4. Meta Materials preparation method as claimed in claim 1, is characterized in that: the binding agent in step B is epoxy resin or polyurethane or acrylate.
5. Meta Materials preparation method as claimed in claim 1, is characterized in that: the material of this solid-state polymer material matrix and this liquid macroimolecule material is polyimides.
6. Meta Materials preparation method as claimed in claim 1, is characterized in that: in steps A, those sheet metals are made by silk screen process, photochemistry etching, laser melting coating Wiring technique or laser induction chemical plating.
7. Meta Materials preparation method as claimed in claim 1, is characterized in that: in step C, the plurality of substrate with sheet metal array structure is fixed in this mould by manual operations.
8. Meta Materials preparation method as claimed in claim 5, is characterized in that: in step e, heating-up temperature is 170 ° to 190 °.
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| CN107919531A (en) * | 2017-10-27 | 2018-04-17 | 天津理工大学 | A kind of tunable metamaterial antenna for wireless power transmission system |
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| CN101765358B (en) * | 2008-12-25 | 2012-05-30 | 西北工业大学 | Meta-material absorber based on dendritic structure |
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