CN102706220A - Multi-band compatible invisible composite structure - Google Patents
Multi-band compatible invisible composite structure Download PDFInfo
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- CN102706220A CN102706220A CN2012102003096A CN201210200309A CN102706220A CN 102706220 A CN102706220 A CN 102706220A CN 2012102003096 A CN2012102003096 A CN 2012102003096A CN 201210200309 A CN201210200309 A CN 201210200309A CN 102706220 A CN102706220 A CN 102706220A
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Abstract
The invention discloses a multi-band compatible invisible composite structure. The structure comprise an Ag/ZnS membrane structure and a SiC (moth eye) structure, wherein the moth eye structure is compounded on the Ag/ZnS membrane structure; and the Ag/ZnS membrane structure is formed by alternately superposing an Ag membrane layer with a ZnS membrane layer one by one. By the composite structure, visible light, intermediate infrared light, far infrared light, 1.06mu m laser, 10.6mu m laser and other multi-band light can be compatibly hidden well; and the composite structure has a flexible light spectrum control property.
Description
Technical field
The present invention relates to the compatible stealth technology of a kind of multiband, specifically is a kind of compatible stealthy composite construction of multiband that utilizes two-dimentional composite construction modulation.
Background technology
Stealth technology is to utilize the thermal radiation optical spectrum characteristic of certain technological means control target surface to make target not receive the threat of detection system.Modern stealth technology mainly comprises radar stealth technology, visual stealth technology, laser stealth technology and infrared stealth technology etc.The compatible stealth technology of multiband mainly is to realize the stealthy compatibility of a plurality of wave bands such as visible light, infrared, laser, radar.
Multiband is compatible stealthy to be the focus and the difficult point problem in stealth technology field.Realize visible light, multiband infrared, that laser is compatible is stealthy must face a lot of contradictions, the compatible difficulty of a wave band of every increase can significantly increase.Infrared and contradiction laser camouflage are the most significant in all contradictory factors, and its difficult point is in same wave band main passive compound.
At present, the main method of the compatibling problem of solution far infrared 8 ~ 14 μ m and laser 10.6 μ m is the spectrum borehole and utilizes the theoretical solution of dynamic heat radiation.Utilize the spectrum borehole can realize the extraordinary infrared and compatible control of laser, but still there is certain problem in this method.Documents (Shi Jiaming; The one dimension doped photon crystal is used for far infrared and the compatible stealthy analysis of laser; Infrared technique, 2010) utilize the doped photon crystal film through the stack photon band gap, obtained extraordinary spectrum compatibility feature; Realized the compatibility of 8 ~ 14 μ m far infrareds stealthy and 1.06 μ m or 10.6 μ m laser camouflages, proved that " spectrum borehole " effect that this one dimension doped photon crystal is realized is used to solve infrared and feasibility this compatible difficult problem of laser.The spectrum borehole has feasibility in theory, but on process implementing, has very large difficulty.
Summary of the invention
The object of the present invention is to provide the compatible stealthy structure of a kind of multiband, it can realize well that multiwave compatibilities such as visible light, mid and far infrared, 1.06 μ m and 10.6 μ m laser are stealthy.
The technical solution that realizes the object of the invention is: the compatible stealthy composite construction of a kind of multiband, comprise Ag/ZnS film structure and SiC " moth eye " structure, and wherein " moth eye " structure is compound on the Ag/ZnS film structure.Said Ag/ZnS film structure is alternately superposeed layer by layer by Ag rete and ZnS rete and constitutes.The rete number of said Ag/ZnS film structure is more than or equal to 10 layers, and the Ag thicknesses of layers is less than 20nm, and the ZnS thicknesses of layers is less than 1 μ m.Said SiC " moth eye " structure is for periodically being arranged in suprabasil frustum array structure; The cycle of " moth eye " structure is distance P=0.8 ~ 8 μ m between the adjacent frustum; The bottom surface circular diameter D=0.6 of frustum ~ 6 μ m; The end face circular diameter d=0.3 of frustum ~ 3 μ m, the depth H of frustum=6 ~ 60 μ m, the substrate thickness B=0.2 of frustum ~ 20 μ m.
The present invention compared with prior art, its remarkable advantage: (1) adopts SiC " moth eye " structure to replace rete, and having avoided film is the drawback that the number of plies is too much brought; (2) mode that adopts two kinds of structures to superpose has spectrum control characteristic more flexibly; (3) through introducing SiC " moth eye " structure; Solved the contradiction of far infrared and 10.6 μ m laser, and through Ag/ZnS film structure and the compound multiwave compatibilities such as visible light, mid and far infrared, 1.06 μ m and 10.6 μ m laser that realized of SiC " moth eye " structure.
Description of drawings
Fig. 1 proposes the sketch map of " moth eye " structure according to the present invention.
Fig. 2 is the sketch map of the compatible stealthy composite construction of multiband of the proposition according to the present invention.
Fig. 3 is the optical characteristics figure of the compatible stealthy composite construction of multiband of the proposition according to the present invention, wherein, and a) overall spectrum characteristic, b) 380nm-1100nm spectral characteristic.
The specific embodiment
Specify the characteristic and the performance of the concrete structure that proposes according to the present invention below in conjunction with accompanying drawing.
In conjunction with Fig. 1; Periodically being arranged in suprabasil frustum array structure belongs to typically " moth eye " structure among the figure; Be intended to utilize the excellent anti-reflection performance of " moth eye " structure to realize the compatibility of height absorption with the high reflection of far infrared of 10.6 μ m laser; Wherein P representes the cycle (distance between the adjacent frustum) of " moth eye " structure, P=0.8 ~ 8 (μ m); D representes the bottom surface circular diameter of frustum, D=0.6 ~ 6 (μ m); D representes the end face circular diameter of frustum, d=0.3 ~ 3 (μ m); H representes the degree of depth of frustum, H=6 ~ 60 (μ m); B representes the substrate thickness of frustum, B=0.2 ~ 20 (μ m).The material of " moth eye " structure adopts the SiC polar material, mainly is from the surface electromagnetic wave theory point of view, utilizes the material parameter of SiC material and the particularity of dispersion relation thereof to realize the high absorption spectrum modulation of 10.6 μ m laser wavelengths.The present invention adopts the characteristic size of electromagnetic field simulation software CST optimal design " moth eye " structure; Characteristic size through control " moth eye " structure realizes spectral characteristic control flexibly, thereby the height that solves 10.6 μ m laser well absorbs with the contradiction of the high reflection of far infrared compatible.
In conjunction with Fig. 2, the compatible stealthy composite construction of multiband is made up of film structure and " moth eye " structure two parts, and compound on film structure " moth eye " structure has solved the too much difficult problem of single film structure rete effectively.Film structure is alternately to be made up of layer by layer silver (Ag) and two kinds of materials of zinc sulphide (ZnS); Its effect is to realize that visible light, laser 1.06 μ m and mid and far infrared are compatible; The number of plies and each thicknesses of layers are that design software TFC optimizes through existing film; Obtain the rete number greater than 10 layers, silver film thickness is less than 20nm, and the ZnS thicknesses of layers is less than the Ag/ZnS film structure of 1 μ m.SiC " moth eye " structure is compound on the film structure, utilizes composite construction to substitute single film structure, realized that multiwave compatibilities such as visible light, mid and far infrared, 1.06 μ m and 10.6 μ m laser are stealthy.
For example, as the cycle P=2 μ of " moth eye " structure m, the bottom surface circular diameter D=1.5 μ m of frustum, the end face circular diameter d=1 μ m of frustum, the depth H of frustum=15 μ m, the substrate thickness B=2 μ m of frustum; 14 each thicknesses of layers of tunic architecture are respectively from bottom to top: when 5.47nm, 39.90nm, 15.49nm, 56.17nm, 12.68nm, 65.15nm, 7.50nm, 64.64nm, 4.77nm, 92.03nm, 6.11nm, 60.83nm, 10.33nm, 34.54nm; Spectral characteristic is as shown in Figure 3; Visible light (0.38 μ m ~ 0.78 μ m) average transmittance reaches more than 60%; Mid and far infrared (3 μ m ~ 5 μ m and 8 μ m ~ 14 μ m) average reflectance reaches more than 90%; Laser (1.06 μ m and 10.6 μ m) absorptivity reaches more than 90%, has realized that well multiwave compatibilities such as visible light, mid and far infrared, 1.06 μ m and 10.6 μ m laser are stealthy.
Claims (4)
1. the compatible stealthy composite construction of a multiband, it is characterized in that: comprise Ag/ZnS film structure and SiC " moth eye " structure, wherein " moth eye " structure is compound on the Ag/ZnS film structure.
2. the compatible stealthy composite construction of multiband according to claim 1 is characterized in that: said Ag/ZnS film structure is alternately superposeed layer by layer by Ag rete and ZnS rete and constitutes.
3. the compatible stealthy composite construction of multiband according to claim 1 and 2, it is characterized in that: the rete number of said Ag/ZnS film structure is more than or equal to 10 layers, and the Ag thicknesses of layers is less than 20nm, and the ZnS thicknesses of layers is less than 1 μ m.
4. the compatible stealthy composite construction of multiband according to claim 1; It is characterized in that: said SiC " moth eye " structure is for periodically being arranged in suprabasil frustum array structure; The cycle of " moth eye " structure is distance P=0.8 ~ 8 μ m between the adjacent frustum, the bottom surface circular diameter D=0.6 of frustum ~ 6 μ m, the end face circular diameter d=0.3 of frustum ~ 3 μ m; The depth H of frustum=6 ~ 60 μ m, the substrate thickness B=0.2 of frustum ~ 20 μ m.
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| CN2012102003096A CN102706220A (en) | 2012-06-15 | 2012-06-15 | Multi-band compatible invisible composite structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998723A (en) * | 2012-11-29 | 2013-03-27 | 法国圣戈班玻璃公司 | Antireflection optical assembly and manufacturing method thereof |
| CN103293581A (en) * | 2013-06-28 | 2013-09-11 | 南京理工大学 | Laser and intermediate and far infrared compatible invisible membrane structure |
| CN104914423A (en) * | 2015-06-01 | 2015-09-16 | 上海交通大学 | Adaptive passive stealth method based on electromagnetic wave waveguide and micro-nano-structure |
| CN110703370A (en) * | 2019-10-09 | 2020-01-17 | 浙江大学 | Multi-band compatible heat dissipation functional infrared stealth material |
| CN114185117A (en) * | 2021-11-30 | 2022-03-15 | 中国运载火箭技术研究院 | Multi-band compatible stealth membrane system structure and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998723A (en) * | 2012-11-29 | 2013-03-27 | 法国圣戈班玻璃公司 | Antireflection optical assembly and manufacturing method thereof |
| CN102998723B (en) * | 2012-11-29 | 2016-03-16 | 法国圣戈班玻璃公司 | Antireflection optical assembly and manufacture method |
| CN103293581A (en) * | 2013-06-28 | 2013-09-11 | 南京理工大学 | Laser and intermediate and far infrared compatible invisible membrane structure |
| CN104914423A (en) * | 2015-06-01 | 2015-09-16 | 上海交通大学 | Adaptive passive stealth method based on electromagnetic wave waveguide and micro-nano-structure |
| CN104914423B (en) * | 2015-06-01 | 2017-05-24 | 上海交通大学 | Adaptive passive stealth method based on electromagnetic wave waveguide and micro-nano-structure |
| CN110703370A (en) * | 2019-10-09 | 2020-01-17 | 浙江大学 | Multi-band compatible heat dissipation functional infrared stealth material |
| CN110703370B (en) * | 2019-10-09 | 2020-12-18 | 浙江大学 | Multi-band compatible heat dissipation functional infrared stealth material |
| CN114185117A (en) * | 2021-11-30 | 2022-03-15 | 中国运载火箭技术研究院 | Multi-band compatible stealth membrane system structure and preparation method thereof |
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Application publication date: 20121003 |