CN117111191A - Infrared and radar stealth crystal metamaterial film of high-temperature engine - Google Patents
Infrared and radar stealth crystal metamaterial film of high-temperature engine Download PDFInfo
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- CN117111191A CN117111191A CN202311075240.3A CN202311075240A CN117111191A CN 117111191 A CN117111191 A CN 117111191A CN 202311075240 A CN202311075240 A CN 202311075240A CN 117111191 A CN117111191 A CN 117111191A
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- 239000013078 crystal Substances 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 110
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 9
- 238000005566 electron beam evaporation Methods 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000002585 base Substances 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 40
- 238000001228 spectrum Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
- G02B5/0833—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only comprising inorganic materials only
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
- C30B23/02—Epitaxial-layer growth
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/08—Germanium
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/68—Crystals with laminate structure, e.g. "superlattices"
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Inorganic Chemistry (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a crystalline metamaterial film for infrared and radar stealth of a high-temperature engine, which comprises a high-refractive-index material layer, a low-refractive-index material layer and a substrate layer; the high refractive index material layer is provided with a plurality of layers; the low refractive index material layer is provided with a plurality of layers; the high refractive index material layers and the low refractive index material layers are alternately fixedly connected with the substrate layer and fixedly connected with the bottom surface of the high refractive index material layer at the bottom; the base layer is used for being connected with an engine; wherein the high refractive index material layer adopts Ge; the substrate layer and the plurality of low-refractive-index material layers are made of high-temperature-resistant nonmetallic materials; the number of high refractive index material layers is one more than the number of low refractive index material layers. The invention has the characteristics of water resistance, wind resistance, salt fog resistance and salt and alkali resistance, can effectively shield infrared characteristics, and reduces the probability of being found by infrared detection equipment.
Description
Technical Field
The invention relates to the technical field of crystal metamaterial, in particular to a crystal metamaterial film for infrared and radar stealth of a high-temperature engine.
Background
The infrared detection technology can effectively improve the detection and identification capability of the target, can overcome the influence of factors such as bad weather conditions, low visibility and the like on target reconnaissance, and along with the continuous development of the infrared detection technology and infrared guided weapons, the infrared protection requirements of important military targets such as airplanes, tanks, missiles and the like are also continuously improved. Therefore, the infrared stealth technology aiming at reducing the target infrared radiation intensity and weakening the enemy detection efficiency is valued by military countries, and the specific measures of infrared stealth currently include improvement of thermal structure design, forced cooling of main heating components, surface coating of infrared stealth materials, infrared camouflage and shielding and the like.
In the flight state of a large-sized aircraft, the tail part of the engine has very obvious infrared characteristics, and at present, no effective method is available for infrared camouflage protection and radar stealth of the part. The traditional spray-type infrared camouflage material has the defects of no high temperature resistance, radar wave reflection, easy falling off and the like.
Therefore, a crystalline metamaterial film for infrared and radar stealth of a high-temperature engine is provided.
Disclosure of Invention
The invention aims to provide a crystalline metamaterial film for infrared and radar stealth of a high-temperature engine, and aims to solve or improve at least one of the technical problems.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a crystalline metamaterial film for infrared and radar stealth of a high-temperature engine, which comprises the following components:
the high-refractive-index material layer is provided with a plurality of high-refractive-index material layers;
the low refractive index material layer is provided with a plurality of low refractive index material layers; the high refractive index material layers and the low refractive index material layers are alternately fixedly connected;
the substrate layer is fixedly connected to the bottom surface of the high refractive index material layer at the bottom; the base layer is used for being connected with an engine;
wherein the high refractive index material layer adopts Ge; the substrate layer and the plurality of low-refractive-index material layers are made of high-temperature-resistant nonmetallic materials; the number of high refractive index material layers is one more than the number of low refractive index material layers.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, the high-refractive-index material layers, the low-refractive-index material layers and the substrate layer are plated on the surface of the high-temperature engine by adopting a vacuum electron beam evaporation method.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, which is provided by the invention, the vacuum electron beam evaporation method is used for preparing the crystalline metamaterial film by using a film plating machine.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, the total thickness of the high-refractive-index material layers, the low-refractive-index material layers and the basal layer is smaller than 0.2mm.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, provided by the invention, the film system structure of the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine is expressed as follows:
{ sub|4a15|air }, wherein A1 and A2 each represent the high refractive index material layers having different thicknesses; b1 and B2 each represent the low refractive index material layers having different thicknesses; sub represents the base layer.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, which is provided by the invention, the thickness of the high-refractive-index material layer represented by A1 is 675nm;
the thickness of the high refractive index material layer represented by A2 was 240nm.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, the thickness of the low-refractive-index material layer represented by B1 is 1250nm;
the thickness of the low refractive index material layer represented by B1 was 440nm.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, which is provided by the invention, the substrate layer is made of polyacrylonitrile.
According to the crystalline metamaterial film for infrared and radar stealth of the high-temperature engine, znSe is adopted for the low-refractive-index material layer.
The invention discloses the following technical effects:
the film adopts a plurality of high refractive index material layers and a plurality of low refractive index material layers which are alternately arranged, and the high refractive index material layers adopt Ge; the substrate layer and the plurality of low-refractive-index material layers are made of high-temperature-resistant nonmetallic materials; the film has the characteristics of water resistance, wind resistance, salt fog resistance and salt and alkali resistance, and forms a whole with metal after being plated on the surface of the metal, so that the film is not easy to fall off;
the high refractive index material layer adopts Ge; the substrate layer and the plurality of low refractive index material layers are made of high-temperature-resistant nonmetallic materials, and radar waves cannot be reflected; the adopted materials are all high-temperature resistant materials, and can resist the temperature of the tail part of the engine after being plated on the surface of the engine; the infrared characteristics can be effectively shielded, and the probability of finding by infrared detection equipment is reduced; solves the problem of infrared stealth at the tail of the engine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a crystalline metamaterial film for infrared and radar stealth of a high temperature engine according to the present invention;
FIG. 2 is a graph of reflectance spectra of the present invention;
FIG. 3 is a graph of the reflection spectrum of the present invention measured by a Fourier transform infrared spectrometer;
wherein, 1, a basal layer; 2. a high refractive index material layer; 3. a layer of low refractive index material.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-3, the present invention provides a crystalline metamaterial film for infrared and radar stealth of a high temperature engine, comprising:
a high refractive index material layer 2, wherein the high refractive index material layer 2 is provided with a plurality of layers;
a low refractive index material layer 3, wherein the low refractive index material layer 3 is provided with a plurality of layers; the high refractive index material layers 2 and the low refractive index material layers 3 are alternately fixedly connected;
a base layer 1, wherein the base layer 1 is fixedly connected to the bottom surface of the high refractive index material layer 2 positioned at the bottom; the substrate layer 1 is used for connection with an engine;
wherein the high refractive index material layer 2 adopts Ge; the substrate layer 1 and the plurality of low refractive index material layers 3 are made of high-temperature resistant nonmetallic materials; the number of high refractive index material layers 2 is one more than the number of low refractive index material layers 3;
the thin film is provided with a plurality of high-refractive-index material layers 2 and a plurality of low-refractive-index material layers 3 which are alternately arranged, and the high-refractive-index material layers 2 adopt Ge; the substrate layer 1 and the low refractive index material layers 3 are made of high-temperature-resistant nonmetallic materials; the film has the characteristics of water resistance, wind resistance, salt fog resistance and salt and alkali resistance, and forms a whole with metal after being plated on the surface of the metal, so that the film is not easy to fall off;
the high refractive index material layer 2 of the invention adopts Ge; the substrate layer 1 and the plurality of low refractive index material layers 3 are made of high-temperature-resistant nonmetallic materials, and radar waves cannot be reflected; the adopted materials are all high-temperature resistant materials, and can resist the temperature of the tail part of the engine after being plated on the surface of the engine; the infrared characteristics can be effectively shielded, and the probability of finding by infrared detection equipment is reduced; solves the problem of infrared stealth at the tail of the engine.
In a further optimized scheme, the high-refractive-index material layers 2, the low-refractive-index material layers 3 and the substrate layer 1 are plated on the surface of the high-temperature engine by adopting a vacuum electron beam evaporation method.
Further optimizing scheme, vacuum electron beam evaporation method uses the coating machine to prepare.
Further optimizing scheme, the overall thickness of the high refractive index material layers 2, the low refractive index material layers 3 and the substrate layer 1 is smaller than 0.2mm.
Further optimizing scheme, the film system structure of the infrared and radar stealth crystal metamaterial film of the high-temperature engine is expressed as:
{ sub|a1B14A1B2a25|air }, wherein A1 and A2 each represent a high refractive index material layer 2 having a different thickness; b1 and B2 each represent a low refractive index material layer 3 having a different thickness; sub represents the base layer 1;
the film system structure of the infrared and radar stealth crystalline metamaterial film of the high-temperature engine is designed according to a transmission matrix method and a heterostructure method; the thickness of the film system structure is firstly simulated according to TFC software to obtain a basic film system thickness, then a sample is obtained through experiments, the thickness of a cross section of the sample is obtained through a scanning electron microscope, and then correction is carried out according to the designed film system thickness until the plated film system thickness is basically consistent with the designed film system thickness.
In a further optimization scheme, the thickness of the high refractive index material layer 2 denoted by A1 is 675nm;
the thickness of the high refractive index material layer 2 denoted by A2 was 240nm.
In a further optimization scheme, the thickness of the low refractive index material layer 3 denoted by B1 is 1250nm;
the thickness of the low refractive index material layer 3 denoted by B1 was 440nm.
Further optimizing scheme, the substrate layer 1 adopts polyacrylonitrile.
In a further optimization scheme, znSe is adopted for the low refractive index material layer 3; the high-temperature resistant materials of the substrate layer 1, the high-refractive index material layer 2 and the low-refractive index material layer 3 can resist the high temperature of about 650 ℃, and can resist the temperature of the tail part of the engine after being plated on the surface of the engine; under the injection of high-temperature flame, the temperature of the tail part of the engine can reach about 600 ℃, a layer of wave-absorbing material is coated on the surface of the engine, and a layer of photonic crystal material is coated on the basis of the wave-absorbing material, so that the infrared characteristics can be effectively shielded, and the probability of being found by infrared detection equipment is reduced.
According to the invention, through theoretical calculation, the reflection spectrum curve of the infrared and radar stealth crystal metamaterial film of the high-temperature engine is shown as a graph in fig. 2, and the reflection spectrum curve can be obtained, wherein the average spectral reflectivity of the crystal metamaterial film in a wave band of 3-5 μm is 0.92 and the average spectral reflectivity of the crystal metamaterial film in a wave band of 8-14 μm. The average spectral reflectance of the band was 0.94. Because the crystal metamaterial film has high reflectivity in the middle and far infrared wave bands, the film has good middle and far infrared stealth effect in theory.
The reflection spectrum curve of the prepared crystalline metamaterial film is measured by a Fourier transform infrared spectrometer, and the result is shown in figure 3. The reflection spectrum curve shows that the actual average spectral reflectance of the optical crystal metamaterial film is 0.83 in the wave band of 3-5 mu m, and is 0.76 in the wave band of 8-14 mu m, which is similar to the theoretical design value.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. The utility model provides a high temperature engine's infrared and for radar stealth crystal metamaterial film which characterized in that includes:
a high refractive index material layer (2), wherein the high refractive index material layer (2) is provided with a plurality of layers;
a low refractive index material layer (3), wherein the low refractive index material layer (3) is provided with a plurality of low refractive index materials; the high refractive index material layers (2) and the low refractive index material layers (3) are alternately fixedly connected;
the substrate layer (1) is fixedly connected to the bottom surface of the high refractive index material layer (2) at the bottom; the substrate layer (1) is used for connecting with an engine;
wherein the high refractive index material layer (2) adopts Ge; the substrate layer (1) and the low-refractive-index material layers (3) are made of high-temperature-resistant nonmetallic materials; the number of high refractive index material layers (2) is one more than the number of low refractive index material layers (3).
2. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 1, wherein: the high refractive index material layers (2), the low refractive index material layers (3) and the substrate layer (1) are plated on the surface of the high-temperature engine by adopting a vacuum electron beam evaporation method.
3. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 2, wherein: the vacuum electron beam evaporation method is prepared by using a film plating machine.
4. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 1, wherein: the overall thickness of the high refractive index material layers (2), the low refractive index material layers (3) and the substrate layer (1) is smaller than 0.2mm.
5. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 1, wherein: the film system structure of the infrared and radar stealth crystalline metamaterial film of the high-temperature engine is expressed as follows:
{ sub| (A1B 1) 4A1 (B2A 2) 5|air }, wherein A1 and A2 each represent the high refractive index material layer (2) with different thickness; b1 and B2 each represent the low refractive index material layer (3) having different thicknesses; sub represents the substrate layer (1).
6. The infrared and radar stealth crystalline metamaterial film for a high temperature engine as set forth in claim 5, wherein:
the thickness of the high refractive index material layer (2) represented by the A1 is 675nm;
the thickness of the high refractive index material layer (2) represented by A2 is 240nm.
7. The infrared and radar stealth crystalline metamaterial film for a high temperature engine as set forth in claim 5, wherein:
the thickness of the low refractive index material layer (3) represented by the B1 is 1250nm;
the thickness of the low refractive index material layer (3) represented by B1 is 440nm.
8. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 1, wherein: the substrate layer (1) adopts polyacrylonitrile.
9. The infrared and radar stealth crystalline metamaterial film for a high temperature engine according to claim 1, wherein: the low refractive index material layer (3) adopts ZnSe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311075240.3A CN117111191A (en) | 2023-08-24 | 2023-08-24 | Infrared and radar stealth crystal metamaterial film of high-temperature engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311075240.3A CN117111191A (en) | 2023-08-24 | 2023-08-24 | Infrared and radar stealth crystal metamaterial film of high-temperature engine |
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| CN117111191A true CN117111191A (en) | 2023-11-24 |
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| CN202311075240.3A Pending CN117111191A (en) | 2023-08-24 | 2023-08-24 | Infrared and radar stealth crystal metamaterial film of high-temperature engine |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003302520A (en) * | 2002-04-10 | 2003-10-24 | Sumitomo Electric Ind Ltd | Reflection mirror for infrared laser and method for manufacturing the same |
| CN112346160A (en) * | 2020-10-20 | 2021-02-09 | 中国人民解放军国防科技大学 | Nonmetal visible light laser infrared multiband compatible stealth film and preparation method thereof |
| CN112882227A (en) * | 2021-01-19 | 2021-06-01 | 滁州学院 | Design and preparation method of infrared spectrum selective low-emissivity material |
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- 2023-08-24 CN CN202311075240.3A patent/CN117111191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003302520A (en) * | 2002-04-10 | 2003-10-24 | Sumitomo Electric Ind Ltd | Reflection mirror for infrared laser and method for manufacturing the same |
| CN112346160A (en) * | 2020-10-20 | 2021-02-09 | 中国人民解放军国防科技大学 | Nonmetal visible light laser infrared multiband compatible stealth film and preparation method thereof |
| CN112882227A (en) * | 2021-01-19 | 2021-06-01 | 滁州学院 | Design and preparation method of infrared spectrum selective low-emissivity material |
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