CN110767075A - Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof - Google Patents
Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof Download PDFInfo
- Publication number
- CN110767075A CN110767075A CN201911233482.4A CN201911233482A CN110767075A CN 110767075 A CN110767075 A CN 110767075A CN 201911233482 A CN201911233482 A CN 201911233482A CN 110767075 A CN110767075 A CN 110767075A
- Authority
- CN
- China
- Prior art keywords
- network
- metal
- nano
- counterfeiting
- metal micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Credit Cards Or The Like (AREA)
Abstract
The invention relates to a flexible anti-counterfeiting layer based on a metal micro-nano network, and a preparation method and application thereof. The metal elements in the metal micro-nano network comprise transition metal elements. The anti-counterfeiting layer is a flexible, transparent and stretchable metal micro-nano network, is not easy to see by naked eyes under visible light, and has larger reflectivity in an infrared light area, so that the anti-counterfeiting layer is easy to be identified by an infrared camera; the metal nano network has good flexibility and rough surface smoothness, can maintain good identification effect under the deformation conditions of high-temperature treatment, stretching, bending, folding and the like, and can be used for technical anti-counterfeiting of products such as painting and calligraphy artworks, paper money, commodity labels and the like.
Description
Technical Field
The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a flexible anti-counterfeiting layer based on a metal micro-nano network, and a preparation method and application thereof.
Background
Counterfeit and shoddy products are rolled in the global market, bring huge risks to human health and national security, and become a global economic public nuisance. Various anti-counterfeiting modes and products are produced in order to protect the own rights and interests of consumers and merchants. The anti-counterfeiting ink has the advantages of low cost, good concealment, convenient inspection, strong reproducibility and the like, and is the preferred anti-counterfeiting technology for paper money and trademarks of various countries.
However, the anti-counterfeiting functional material in the ink has poor fluorescence stability and is easy to oxidize and decompose, is difficult to disperse in an oily medium and has high synthesis difficulty, the anti-counterfeiting ink cannot meet the requirement of stretchability and high flexibility, and the development of a new anti-counterfeiting technology complementary to the prior art is urgently needed.
Therefore, there is a need in the art to develop a new anti-counterfeiting layer, which has high flexibility, can be stretched, has no need of excitation light source, and has simple preparation process and can be industrially produced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a flexible anti-counterfeiting layer based on a metal micro-nano network, and a preparation method and application thereof. The flexible anti-counterfeiting layer based on the metal micro-nano network has the advantages of smooth attachment of a rough surface, high-temperature stability, stretching, bending and folding deformation, no excitation light source requirement and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
one of the purposes of the invention is to provide a flexible anti-counterfeiting layer based on a metal micro-nano network, wherein metal elements in the metal micro-nano network are transition metal elements.
The metal micro-nano network has the requirement of high reflectivity in an infrared region and is used for the identification of an infrared camera, and the metal micro-nano network has the requirement of high transparency (> 90%) in a visible light region and cannot be easily observed by human eyes, so that the anti-counterfeiting function is realized. The transition metal element adopted by the invention has higher reflectivity and transparency to the infrared region.
The anti-counterfeiting layer is a flexible, transparent and stretchable metal micro-nano network, is not easy to see by naked eyes under visible light, and has larger reflectivity in an infrared light area, so that the anti-counterfeiting layer is easy to be identified by an infrared camera; the metal nano network has good flexibility and rough surface smoothness, further realizes good laminating and anti-counterfeiting effects, and is wide in application; meanwhile, the anti-counterfeiting label can maintain good identification effect under deformation conditions of high-temperature treatment, stretching, bending or folding and the like, has excellent mechanical stability, and can be used for technical anti-counterfeiting of products such as painting and calligraphy artworks, paper money, commodity labels and the like.
Preferably, the metal duty ratio of the metal micro-nano network is 2 wt% to 50 wt%, such as 5 wt%, 8 wt%, 10 wt%, 15 wt%, 20 wt%, 25 wt%, 30 wt%, 35 wt%, 40 wt%, or 45 wt%.
The metal duty ratio is the ratio of the area of the metal strip in the metal network to the total area.
Preferably, the thickness of the metal micro-nano network is 5nm to 10 μm, preferably 5nm to 1 μm, such as 10nm, 20nm, 50nm, 80nm, 100nm, 200nm, 300nm, 500nm, 600nm, 800nm, 1 μm, 2 μm, 5 μm, 6 μm, 8 μm or 9 μm, etc.
The thickness of the metal micro-nano network selected by the invention can be completely attached to different rough surfaces in a shape following manner. The thickness is too large, the bending rigidity of the metal nano network is large, the smooth attachment with the microstructure with the rough surface cannot be realized, and the good attachment effect cannot be realized.
Preferably, the width of the metal wire in the metal micro-nano network is 10-200 nm, such as 20nm, 30nm, 50nm, 60nm, 80nm, 100nm, 120nm, 150nm, 160nm or 180 nm.
The width of the metal wire in the metal micro-nano network is as follows: the wire of the present invention is not necessarily cylindrical, so the cross-section is not necessarily circular, and the width is the distance of the farthest point of the wire cross-section.
Preferably, the size of the mesh in the metal micro-nano network is 50nm to 100 μm, preferably 50nm to 20 μm, such as 80nm, 100nm, 200nm, 300nm, 500nm, 600nm, 800nm, 1 μm, 2 μm, 5 μm, 6 μm, 8 μm, 10 μm, 12 μm, 15 μm, 16 μm, 18 μm, 19 μm, 20 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 80 μm or 90 μm, etc.
The mesh size of the selected metal micro-nano network is related to the transmittance of a visible light area and the reflectance of an infrared light area. The mesh is too small, so that the transmittance of visible light is reduced; the mesh is too large, reducing the reflectivity of infrared light. By regulating and controlling the metal duty ratio, the line width and the mesh size of the metal micro-nano network, the ultrahigh transmittance of a visible light area and the high reflectance of an infrared light area are met.
Preferably, the metal in the metal micro-nano network is a metal simple substance and/or an alloy.
Preferably, the metal simple substance is any one of gold, silver or copper.
Preferably, the alloy is any one of gold-silver alloy, gold-copper alloy, copper-silver alloy or gold-silver-copper alloy.
The metal in the selected metal micro-nano network is made into the metal micro-nano network, so that the advantages of high-temperature stability, chemical stability, mechanical stability and the like can be simultaneously met, and other metal elements cannot be simultaneously met.
Preferably, the structure of the metal micro-nano network comprises any one of a square network structure, a rectangular network structure, a diamond network structure, a hexagonal network structure, a round hole network structure, a cracking network structure, a serpentine network structure, a nanowire network structure, a polymer phase-separated random network structure or an irregular network structure.
Preferably, the transmittance of the metal micro-nano network in a visible light band of 400-760 nm is higher than 90%, for example 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% or 99.9%. Which is not readily visible to the naked eye.
Preferably, the reflectivity of the metal micro-nano network in an infrared band of 2-5 μm and 8-14 μm is higher than 10%, for example, 12%, 15%, 18%, 20%, 25%, 28%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, or the like. The patterns formed by the metal micro-nano network are easy to be identified by an infrared camera.
Preferably, the infrared light reflected by the metal micro-nano network is from an infrared heat source in the environment, and is preferably electrical heating equipment or a human body.
The second purpose of the present invention is to provide a method for preparing a flexible anti-counterfeiting layer based on a metal micro-nano network according to the first purpose, wherein the method comprises the following steps:
(1) preparing a metal material, and patterning the metal material to obtain a metal network with a specific pattern, namely a patterned metal network;
(2) and (3) transferring the patterned metal network obtained in the step (1) to a product needing anti-counterfeiting to obtain a flexible anti-counterfeiting layer of the metal micro-nano network.
Preferably, the metal material in step (1) is prepared by a nanotechnology processing method, a chemical synthesis method, electron beam evaporation, thermal evaporation or magnetron sputtering.
Preferably, the nanotechnology processing method includes a grain boundary transfer method, a spinning template method, a nanowire spraying method, an inkjet printing method, or a laser cutting metal thin film method.
Preferably, the spinning template method comprises electrospinning or biological spinning.
Preferably, the metal material in step (1) includes any one of or a combination of at least two of a metal elementary substance nanowire with a nanometer thickness, an alloy nanowire with a nanometer thickness, a metal elementary substance network and an alloy network.
Preferably, the elemental metal network and the alloy network are respectively and independently selected from any one of an integrated network film or a composite network film formed by coating nanowires.
Preferably, the patterning method of step (1) includes any one of an adhesive tape stencil transfer method, a mask spray pattern method, an ink jet printing method, or a photolithography patterning method.
Preferably, the patterned metal network in the step (2) is an anti-counterfeiting pattern which can be identified under an infrared camera.
The invention also aims to provide an application of the flexible anti-counterfeiting layer based on the metal micro-nano network, which is used in the field of product anti-counterfeiting, preferably any one or a combination of at least two of paper money anti-counterfeiting, painting and calligraphy anti-counterfeiting, artwork anti-counterfeiting and commodity label anti-counterfeiting.
Compared with the prior art, the invention has the following beneficial effects:
(1) the selected metal micro-nano network can be highly and smoothly combined with a rough substrate (anti-counterfeiting product), can meet the anti-counterfeiting requirements of most smooth or rough substrate materials, and has wide material application range;
(2) the metal micro-nano network has good flexibility, can still keep good infrared camera identification effect under the deformation operations of stretching, bending or folding and the like, and is suitable for anti-counterfeiting of a bent substrate or a large-deformation substrate;
(3) the metal micro-nano network anti-counterfeiting layer has high temperature stability and chemical stability, and can still maintain a good infrared camera identification effect in an air environment or a high temperature environment;
(4) according to the invention, no additional excitation light source is needed for pattern recognition of the metal micro-nano network, and infrared light sources can be provided for pattern recognition by electrical equipment or heating objects such as human bodies in the environment.
Drawings
Fig. 1 is a flow chart of a preparation process of a silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention;
fig. 2A, fig. 2B, fig. 2C, fig. 3A, fig. 3B and fig. 3C are scanned images of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention at different spraying densities (the scale in the figures is 5 μm);
fig. 4A to 4F are diagrams of the recognition effect of the infrared camera of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention under different spraying densities;
fig. 5 is a graph comparing transmittance of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 in visible light regions at different spraying densities;
fig. 6 is a graph showing the transmittance of the silver nanowire network in the visible light region and the reflectance of the silver nanowire network in the infrared light region according to example 1 of the present invention;
fig. 7A is an optical diagram of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention under bending, fig. 7B is an infrared camera identification effect diagram after bending, and fig. 7C is an infrared camera identification effect diagram (scale in the diagram is 5mm) of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention under tensile deformation;
fig. 8A to 8B are temperature test charts of the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention, where fig. 8A is a normal temperature infrared camera identification chart of the anti-counterfeiting layer, and fig. 8B is an infrared camera identification chart of the anti-counterfeiting layer after heating at 200 ℃ for 2 hours (the scale in the chart is 5 mm);
fig. 9A to 9D are graphs (with a scale of 10mm) of an anti-counterfeiting effect of a silver nanowire network anti-counterfeiting layer provided in embodiment 1, where fig. 9A is a scanning electron microscope graph, fig. 9B is an optical graph and an infrared anti-counterfeiting effect graph of a silver nanowire network on a banknote, fig. 9C is an optical graph of a silver nanowire network on a smooth and transparent silica gel, and fig. 9D is a grayscale graph of the silver nanowire network realizing different infrared reflection effects by controlling a spraying density;
fig. 10A to fig. 10C, fig. 11A to fig. 11C, fig. 12A to fig. 12C, and fig. 13A to fig. 13C are anti-counterfeiting effect diagrams (10 mm in scale) of pattern coding of a rough surface by the silver nanowire network anti-counterfeiting layer provided in embodiment 1 of the present invention, where fig. 10A to fig. 10C are scanning diagrams, optical diagrams, and infrared effect diagrams of the silver nanowire network anti-counterfeiting layer on the surface of the matte paper, respectively; 11A-11C are respectively a scanned image, an optical image and an infrared effect image of the silver nanowire network anti-counterfeiting layer on the surface of 10000-mesh sandpaper; fig. 12A-12C are a scan, an optical, and an infrared effect of the silver nanowire network anti-counterfeiting layer on the surface of a 1000-mesh sandpaper replica (silica gel), respectively; FIGS. 13A-13C are a scanned, optical, and infrared effect plot, respectively, of a silver nanowire network anti-counterfeiting layer on the surface of a replica (silica gel) of a leaf of Neuma velveteen;
fig. 14A, 14B, 15A, and 15B are test charts of the gold nano-network anti-counterfeiting layer according to embodiment 2 of the present invention, in which fig. 14A is a transmittance chart, fig. 14B is an optical chart, fig. 15A is a scanned chart, and fig. 15B is an infrared identification chart.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment uses a sprayed silver nanowire network as an infrared anti-counterfeiting layer, patterns of the anti-counterfeiting layer are encrypted by adopting a mask plate during spraying, the anti-counterfeiting layer which is difficult to observe by naked eyes is obtained, decoding of the anti-counterfeiting layer is realized under shooting of an infrared camera, and a flow schematic diagram for preparing the infrared anti-counterfeiting layer is shown in figure 1 and comprises the following steps:
(1) heating the smooth or rough substrate surface to 80 ℃;
(2) placing a negative mask plate with an encrypted pattern on a spraying surface;
(3) spraying superfine silver nanowire (diameter of 20nm and length of 30 μm) water solution with an automatic spray gun;
(4) removing the negative mask plate to obtain an encryption pattern composed of the silver nanowire network, namely a silver nanowire anti-counterfeiting layer, so that the surface densities of the obtained silver nanowire networks are 0.3 mu g/cm respectively2、0.8μg/cm2、1.6μg/cm2、3.1μg/cm2、6.3μg/cm2And 9.4. mu.g/cm2；
(5) And (4) decrypting and identifying the silver nanowire anti-counterfeiting layer by using an infrared camera.
Fig. 2A, 2B, 2C, 3A, 3B, and 3C are scanning images of the anti-counterfeit layer prepared by the silver nanowire network in the embodiment at different spraying densities, and fig. 4A to 4F are recognition effect images of the infrared camera at different spraying densities, which shows that as the spraying density increases, the brightness of the recognition pattern of the infrared camera is greater;
fig. 5 is a graph comparing the transmittance of the silver nanowire network anti-counterfeiting layer in the visible light region under different spraying densities in the present embodiment, and it can be seen from the graph that, for the silver nanowire network, as the spraying density increases, the transmittance in the visible light region slightly decreases;
FIG. 6 shows that the spraying density of the silver nanowires in this example is 3.1 μ g/cm2The transmittance of the obtained anti-counterfeiting layer in a visible light region is higher than 97%, and the reflectivity in an infrared light region reaches 30%, so that the intensity of the environmental infrared rays reflected by the anti-counterfeiting layer based on the silver nanowires is enough to be received and identified by an infrared camera;
fig. 7A is an optical diagram of the silver nanowire network anti-counterfeiting layer in the embodiment under bending, fig. 7B is an infrared camera recognition effect diagram after bending, and fig. 7C is an infrared camera recognition effect diagram of the anti-counterfeiting layer under stretching deformation (the scale in the diagram is 5mm), and it can be seen from the diagrams that the anti-counterfeiting layer obtained by the invention has better mechanical stability and can still better recognize patterns under bending or stretching deformation;
fig. 8A-8B are temperature test charts of the silver nanowire network anti-counterfeiting layer in the embodiment, where fig. 8A is a normal-temperature infrared camera identification chart of the anti-counterfeiting layer, and fig. 8B is an infrared camera identification chart of the anti-counterfeiting layer after being heated at 200 ℃ for 2 hours (the scale in the chart is 5mm), and it can be seen from the charts that the obtained silver nanowire network anti-counterfeiting layer has good high-temperature stability, and can be completely identified by the infrared camera after being heated at 200 ℃ for 2 hours;
fig. 9A to 9D are graphs (with a scale of 10mm) of an anti-counterfeiting effect of a silver nanowire network anti-counterfeiting layer provided in embodiment 1, where fig. 9A is a scanning electron microscope graph, fig. 9B is an optical graph and an infrared anti-counterfeiting effect graph of a silver nanowire network on a banknote, fig. 9C is an optical graph of a silver nanowire network on a smooth and transparent silica gel, and fig. 9D is a grayscale graph of the silver nanowire network realizing different infrared reflection effects by controlling a spraying density;
fig. 10A to fig. 10C, fig. 11A to fig. 11C, fig. 12A to fig. 12C, and fig. 13A to fig. 13C are anti-counterfeiting effect diagrams (with a scale of 10mm) obtained by pattern-coding the rough surface of the silver nanowire network anti-counterfeiting layer provided in this embodiment, where fig. 10A to fig. 10C are respectively a scanned diagram, an optical diagram, and an infrared effect diagram of the silver nanowire network anti-counterfeiting layer on the surface of the matte paper; 11A-11C are respectively a scanned image, an optical image and an infrared effect image of the silver nanowire network anti-counterfeiting layer on the surface of 10000-mesh sandpaper; fig. 12A-12C are a scan, an optical, and an infrared effect of the silver nanowire network anti-counterfeiting layer on the surface of a 1000-mesh sandpaper replica (silica gel), respectively; FIGS. 13A-13C are a scanned, optical, and infrared effect plot, respectively, of a silver nanowire network anti-counterfeiting layer on the surface of a replica (silica gel) of a leaf of Neuma velveteen; as can be seen from the figure, the silver nanowire network anti-counterfeiting layer has wide application, and can perform pattern password anti-counterfeiting on smooth or rough planes or curved surfaces.
Example 2
In this embodiment, a gold nano-network obtained by a grain boundary transfer method is used as an anti-counterfeiting layer, the gold nano-network is patterned by a sugar transfer method to obtain an anti-counterfeiting layer that is difficult to observe by naked eyes, and the anti-counterfeiting layer is decoded under the shooting of an infrared camera, wherein the preparation method comprises the following steps:
(1) transferring the gold nano network obtained by the grain boundary transfer method to flexible polydimethylsiloxane;
(2) preparing a bendable plastic mask plate by using a laser cutting machine for patterning the gold nano-network;
(3) patterning and transferring the gold nano network by adopting a sucrose transfer method, placing a plastic mask plate with a required pattern (five-pointed star) on the gold nano network, and casting a molten sucrose film;
(4) when the sucrose is cooled to 25 ℃ and solidified, the sucrose becomes sufficiently viscous to peel off the gold nanoweb and transfer to the skin; finally, washing off sucrose by using deionized water to obtain an infrared anti-counterfeiting layer of the gold nano network with the required pattern;
(5) and (4) decrypting and identifying the silver nanowire anti-counterfeiting layer by using an infrared camera.
Fig. 14A, 14B, 15A, and 15B are test charts of the gold nano-network anti-counterfeiting layer according to embodiment 2 of the present invention, in which fig. 14A is a transmittance chart, fig. 14B is an optical chart, fig. 15A is a scanned chart, and fig. 15B is an infrared identification chart.
Therefore, the metal-based nano network obtained by the invention has wide application, mechanical stability and high-temperature stability, and can be used for anti-counterfeiting of different materials.
The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The flexible anti-counterfeiting layer based on the metal micro-nano network is characterized in that metal elements in the metal micro-nano network comprise transition metal elements.
2. The flexible anti-counterfeiting layer based on the metal micro-nano network according to claim 1, wherein the metal duty ratio of the metal micro-nano network is 2 wt% -50 wt%;
preferably, the thickness of the metal micro-nano network is 5 nm-10 μm, preferably 5 nm-1 μm;
preferably, the width of the metal wire in the metal micro-nano network is 10-200 nm;
preferably, the mesh size in the metal micro-nano network is 50 nm-100 μm, preferably 50 nm-20 μm.
3. The flexible anti-counterfeiting layer based on the metal micro-nano network according to claim 1 or 2, wherein the metal in the metal micro-nano network is a metal simple substance and/or an alloy;
preferably, the metal simple substance is any one of gold, silver or copper;
preferably, the alloy is any one of gold-silver alloy, gold-copper alloy, copper-silver alloy or gold-silver-copper alloy.
4. The flexible anti-counterfeiting layer based on the metal micro-nano network according to any one of claims 1 to 3, wherein the structure of the metal micro-nano network comprises any one of a square network structure, a rectangular network structure, a diamond network structure, a hexagonal network structure, a round hole network structure, a cracking type network structure, a serpentine network structure, a nanowire network structure, a polymer phase-separated random network structure or an irregular network structure.
5. The flexible anti-counterfeiting layer based on the metal micro-nano network according to any one of claims 1 to 4, wherein the transmittance of the metal micro-nano network in a visible light band of 400-760 nm is higher than 90%;
preferably, the reflectivity of the metal micro-nano network in an infrared light wave band of 2-5 microns and 8-14 microns is higher than 10%;
preferably, the infrared light reflected by the metal micro-nano network is from an infrared heat source in the environment, and is preferably electrical heating equipment or a human body.
6. A preparation method of the flexible anti-counterfeiting layer based on the metal micro-nano network according to any one of claims 1 to 5, wherein the method comprises the following steps:
(1) preparing a metal material, and patterning the metal material to obtain a metal network with a specific pattern, namely a patterned metal network;
(2) and (3) transferring the patterned metal network obtained in the step (1) to a product needing anti-counterfeiting to obtain a flexible anti-counterfeiting layer of the metal micro-nano network.
7. The method according to claim 6, wherein the metal material of step (1) is prepared by a nanotechnology processing method, a chemical synthesis method, electron beam evaporation, thermal evaporation, or magnetron sputtering;
preferably, the nanotechnology processing method includes a grain boundary transfer method, a spinning template method, a nanowire spraying method, an inkjet printing method, or a laser cutting metal film method;
preferably, the spinning template method comprises electrospinning or biological spinning;
preferably, the metal material in step (1) includes any one or a combination of at least two of nano-thickness metal simple substance nanowires, nano-thickness alloy nanowires, metal simple substance networks and alloy networks;
preferably, the elemental metal network and the alloy network are respectively and independently selected from any one of an integrated network film or a composite network film formed by coating nanowires.
8. The method of claim 6 or 7, wherein the patterning process of step (1) comprises any one of an adhesive tape stencil transfer process, a mask spray pattern process, an ink jet printing process, or a photolithographic patterning process.
9. The method of any one of claims 6-8, wherein the patterned metal network of step (2) is a security pattern that can be identified with an infrared camera.
10. Use of the flexible anti-counterfeiting layer based on the metal micro-nano network according to any one of claims 1 to 5, wherein the flexible anti-counterfeiting layer based on the metal micro-nano network is used in the field of product anti-counterfeiting, preferably any one or a combination of at least two of paper money anti-counterfeiting, painting and calligraphy anti-counterfeiting, artwork anti-counterfeiting and commodity label anti-counterfeiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233482.4A CN110767075B (en) | 2019-12-05 | 2019-12-05 | Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233482.4A CN110767075B (en) | 2019-12-05 | 2019-12-05 | Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110767075A true CN110767075A (en) | 2020-02-07 |
| CN110767075B CN110767075B (en) | 2022-04-08 |
Family
ID=69340946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911233482.4A Active CN110767075B (en) | 2019-12-05 | 2019-12-05 | Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110767075B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326059A (en) * | 2020-02-22 | 2020-06-23 | 复旦大学 | High-safety encryption and anti-counterfeiting method based on fluorescence or phosphorescence stimulation response |
Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425047A (en) * | 1999-11-25 | 2003-06-18 | 西柏控股有限公司 | Printing ink, micro-filaments used as antenna in antifakery document and methods for producing antifakery document and idenlifying document |
| CN1839417A (en) * | 2003-08-22 | 2006-09-27 | 纳幕尔杜邦公司 | Methods for identity verification using transparent luminescent polymers |
| JP2008058811A (en) * | 2006-09-01 | 2008-03-13 | Lintec Corp | Concealing label for information protection, and method for using the same |
| CN101152822A (en) * | 2006-09-28 | 2008-04-02 | 富士施乐株式会社 | Amorphous alloy member, process for manufacturing amorphous alloy member, authenticity determining device and method |
| CN101391557A (en) * | 2007-09-20 | 2009-03-25 | 中国印钞造币总公司 | Film with false proof function and anti-counterfeiting object containing film |
| CN101398950A (en) * | 2007-09-25 | 2009-04-01 | 中国印钞造币总公司 | Method for appraising document of value |
| CN101640004A (en) * | 2008-07-29 | 2010-02-03 | 中国印钞造币总公司 | Holographic dealuminized composite film material and anti-counterfeiting object |
| CN102002365A (en) * | 2009-08-31 | 2011-04-06 | 孙晓东 | Transparent nano florescent material composition and application thereof in invisible anti-counterfeiting products |
| CN102372944A (en) * | 2010-08-24 | 2012-03-14 | 惠州市华阳光学技术有限公司 | Pigment slice applied to tracing anti-counterfeit technology and manufacturing method thereof |
| CN102753355A (en) * | 2009-12-17 | 2012-10-24 | 霍尼韦尔国际公司 | Refractive index matched phosphors and substrates for security applications |
| CN102797192A (en) * | 2012-07-30 | 2012-11-28 | 富阳万华纸业有限公司 | Novel anti-counterfeit paper |
| CN103597355A (en) * | 2011-06-15 | 2014-02-19 | 国家造币印钞厂-皇家造币厂 | Use of luminescent nanosystems for authenticating security documents |
| US9063063B2 (en) * | 2013-03-15 | 2015-06-23 | The United States Of America, As Represented By The Secretary Of The Navy | Low-dimensional material chemical vapor sensors |
| CN106029395A (en) * | 2014-02-19 | 2016-10-12 | 德国捷德有限公司 | Security feature and use thereof, value document and process for verifying the authenticity thereof |
| CN106652767A (en) * | 2017-01-19 | 2017-05-10 | 福州固钛光电科技有限公司 | Anti-counterfeiting material and preparation method thereof |
| CN106905963A (en) * | 2017-03-07 | 2017-06-30 | 中国人民银行印制科学技术研究所 | A kind of light emitting articles and the method for differentiating the determinand true and false |
| CN106978181A (en) * | 2017-05-14 | 2017-07-25 | 复旦大学 | The orthogonal fluorescence-encoded anti-fake material of long afterglow is changed in a kind of near infrared light charging |
| CN107423798A (en) * | 2017-08-09 | 2017-12-01 | 上海朗研光电科技有限公司 | Fluorescent two-dimensional code anti-counterfeiting mark method based on nano particle |
| US20180005962A1 (en) * | 2016-06-30 | 2018-01-04 | International Business Machines Corporation | Damaging integrated circuit components |
| CN107848322A (en) * | 2015-08-17 | 2018-03-27 | 捷德货币技术有限责任公司 | Security element, the method for manufacturing Security element and the data medium with Security element |
| CN107955596A (en) * | 2017-11-30 | 2018-04-24 | 天津工业大学 | A kind of photochromic microballoon and preparation method thereof |
| CN108192602A (en) * | 2018-01-22 | 2018-06-22 | 吉林大学 | It is a kind of with room temperature phosphorimetry property without metal-containing polymer carbon dots, preparation method and applications |
| CN108318943A (en) * | 2018-03-16 | 2018-07-24 | 华中科技大学 | A kind of Responsive photonic crystals elastomeric film material, it is prepared and application |
| CN108349290A (en) * | 2015-11-10 | 2018-07-31 | 捷德货币技术有限责任公司 | Security element, its manufacturing method and the data medium equipped with the Security element |
| CN108795428A (en) * | 2018-06-20 | 2018-11-13 | 中国地质大学（北京） | A kind of anti-fake material and its preparation method and application |
| CN109299756A (en) * | 2017-07-24 | 2019-02-01 | 韩国科学技术研究院 | Method for preventing the structure forged, palm off or reused and being used to distinguish forgery, personation or reuse using the structure |
| CN109599028A (en) * | 2017-09-30 | 2019-04-09 | 张家港康得新光电材料有限公司 | Anti false film |
| CN109810272A (en) * | 2019-01-23 | 2019-05-28 | 陕西科技大学 | A kind of oxidation nanometer cellulose two-dimensional metallic organic backbone composite fluorescent film and preparation method thereof |
| CN109950401A (en) * | 2019-03-25 | 2019-06-28 | 南开大学 | A kind of flexible composite transparent electrode as well as preparation method and application thereof based on metal nanometer line and titanium carbide nanometer sheet |
| US20190250167A1 (en) * | 2018-02-09 | 2019-08-15 | The Florida International University Board Of Trustees | Materials and methods for screening topoisomers |
-
2019
- 2019-12-05 CN CN201911233482.4A patent/CN110767075B/en active Active
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425047A (en) * | 1999-11-25 | 2003-06-18 | 西柏控股有限公司 | Printing ink, micro-filaments used as antenna in antifakery document and methods for producing antifakery document and idenlifying document |
| CN1839417A (en) * | 2003-08-22 | 2006-09-27 | 纳幕尔杜邦公司 | Methods for identity verification using transparent luminescent polymers |
| JP2008058811A (en) * | 2006-09-01 | 2008-03-13 | Lintec Corp | Concealing label for information protection, and method for using the same |
| CN101152822A (en) * | 2006-09-28 | 2008-04-02 | 富士施乐株式会社 | Amorphous alloy member, process for manufacturing amorphous alloy member, authenticity determining device and method |
| CN101391557A (en) * | 2007-09-20 | 2009-03-25 | 中国印钞造币总公司 | Film with false proof function and anti-counterfeiting object containing film |
| CN101398950A (en) * | 2007-09-25 | 2009-04-01 | 中国印钞造币总公司 | Method for appraising document of value |
| CN101640004A (en) * | 2008-07-29 | 2010-02-03 | 中国印钞造币总公司 | Holographic dealuminized composite film material and anti-counterfeiting object |
| CN102002365A (en) * | 2009-08-31 | 2011-04-06 | 孙晓东 | Transparent nano florescent material composition and application thereof in invisible anti-counterfeiting products |
| CN102753355A (en) * | 2009-12-17 | 2012-10-24 | 霍尼韦尔国际公司 | Refractive index matched phosphors and substrates for security applications |
| CN102372944A (en) * | 2010-08-24 | 2012-03-14 | 惠州市华阳光学技术有限公司 | Pigment slice applied to tracing anti-counterfeit technology and manufacturing method thereof |
| CN103597355A (en) * | 2011-06-15 | 2014-02-19 | 国家造币印钞厂-皇家造币厂 | Use of luminescent nanosystems for authenticating security documents |
| CN102797192A (en) * | 2012-07-30 | 2012-11-28 | 富阳万华纸业有限公司 | Novel anti-counterfeit paper |
| US9063063B2 (en) * | 2013-03-15 | 2015-06-23 | The United States Of America, As Represented By The Secretary Of The Navy | Low-dimensional material chemical vapor sensors |
| CN106029395A (en) * | 2014-02-19 | 2016-10-12 | 德国捷德有限公司 | Security feature and use thereof, value document and process for verifying the authenticity thereof |
| CN107848322A (en) * | 2015-08-17 | 2018-03-27 | 捷德货币技术有限责任公司 | Security element, the method for manufacturing Security element and the data medium with Security element |
| CN108349290A (en) * | 2015-11-10 | 2018-07-31 | 捷德货币技术有限责任公司 | Security element, its manufacturing method and the data medium equipped with the Security element |
| US20180005962A1 (en) * | 2016-06-30 | 2018-01-04 | International Business Machines Corporation | Damaging integrated circuit components |
| CN106652767A (en) * | 2017-01-19 | 2017-05-10 | 福州固钛光电科技有限公司 | Anti-counterfeiting material and preparation method thereof |
| CN106905963A (en) * | 2017-03-07 | 2017-06-30 | 中国人民银行印制科学技术研究所 | A kind of light emitting articles and the method for differentiating the determinand true and false |
| CN106978181A (en) * | 2017-05-14 | 2017-07-25 | 复旦大学 | The orthogonal fluorescence-encoded anti-fake material of long afterglow is changed in a kind of near infrared light charging |
| CN109299756A (en) * | 2017-07-24 | 2019-02-01 | 韩国科学技术研究院 | Method for preventing the structure forged, palm off or reused and being used to distinguish forgery, personation or reuse using the structure |
| CN107423798A (en) * | 2017-08-09 | 2017-12-01 | 上海朗研光电科技有限公司 | Fluorescent two-dimensional code anti-counterfeiting mark method based on nano particle |
| CN109599028A (en) * | 2017-09-30 | 2019-04-09 | 张家港康得新光电材料有限公司 | Anti false film |
| CN107955596A (en) * | 2017-11-30 | 2018-04-24 | 天津工业大学 | A kind of photochromic microballoon and preparation method thereof |
| CN108192602A (en) * | 2018-01-22 | 2018-06-22 | 吉林大学 | It is a kind of with room temperature phosphorimetry property without metal-containing polymer carbon dots, preparation method and applications |
| US20190250167A1 (en) * | 2018-02-09 | 2019-08-15 | The Florida International University Board Of Trustees | Materials and methods for screening topoisomers |
| CN108318943A (en) * | 2018-03-16 | 2018-07-24 | 华中科技大学 | A kind of Responsive photonic crystals elastomeric film material, it is prepared and application |
| CN108795428A (en) * | 2018-06-20 | 2018-11-13 | 中国地质大学（北京） | A kind of anti-fake material and its preparation method and application |
| CN109810272A (en) * | 2019-01-23 | 2019-05-28 | 陕西科技大学 | A kind of oxidation nanometer cellulose two-dimensional metallic organic backbone composite fluorescent film and preparation method thereof |
| CN109950401A (en) * | 2019-03-25 | 2019-06-28 | 南开大学 | A kind of flexible composite transparent electrode as well as preparation method and application thereof based on metal nanometer line and titanium carbide nanometer sheet |
Non-Patent Citations (2)
| Title |
|---|
| 张明龙，张琼妮: "《促进纳米技术与纳米产业的发展》", 《俄罗斯创新信息概述》 * |
| 赫付涛，朱维维，李寒梅，孟献瑞，徐元清，丁涛，房晓敏，张文凯: "《发光防伪与加密功能材料研究进展》", 《化学研究》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326059A (en) * | 2020-02-22 | 2020-06-23 | 复旦大学 | High-safety encryption and anti-counterfeiting method based on fluorescence or phosphorescence stimulation response |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110767075B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rajan et al. | Silver nanoparticle ink technology: state of the art | |
| US10281626B2 (en) | Color image display devices comprising structural color pixels that are selectively activated and/or deactivated by material deposition | |
| RU2741436C2 (en) | Methods of producing layers with effect | |
| CN112634740B (en) | Manufacturing method and application of non-replicable perovskite fluorescent anti-counterfeiting label | |
| US7648741B2 (en) | Forming a patterned metal layer using laser induced thermal transfer method | |
| US20090209420A1 (en) | Hyperabsorptive nanoparticle compositions | |
| RU2010111312A (en) | OPTIC-THERMALLY WRITTEN NANO-COATING | |
| AU2017321840B2 (en) | Information display medium and manufacturing method relating thereto | |
| CN110767075B (en) | Flexible anti-counterfeiting layer based on metal micro-nano network, and preparation method and application thereof | |
| TWI361229B (en) | ||
| JP6431902B2 (en) | Security elements, especially security labels | |
| EA010035B1 (en) | Method of producing polymer layer with latent polarized image | |
| JP2016102951A (en) | Infrared reflective pattern-formed body | |
| Odintsova et al. | High-resolution large-scale plasmonic laser color printing for jewelry applications | |
| WO2019007092A1 (en) | Anti-counterfeiting hot-stamping film and manufacturing method therefor, and motor vehicle license plate | |
| WO2017010055A1 (en) | Colored laminate and method for producing same | |
| Hwang et al. | Plasmonic color printing via bottom-up laser-induced photomodification process | |
| Kwon et al. | Laser filament bottom-up growth sintering for multi-planar diffraction-limit printing and its application to ultra-transparent wearable thermo-electronics | |
| RU2415026C2 (en) | Method of producing multilayer body and multilayer body | |
| KR102434763B1 (en) | Security tag containing a pattern of biological particles | |
| KR102059539B1 (en) | Structure for anti counterfeit, method for manufacturing of anti counterfeit structure, discrminating method for anti counterfeit and discrminating system for anti counterfeit | |
| Baraldi et al. | Polarization-driven self-organization of silver nanoparticles in 1D and 2D subwavelength gratings for plasmonic photocatalysis | |
| JP2012517610A (en) | Micro relief structure | |
| JP2016135562A (en) | Laminate, production method of conductive substrate using the same, production method of electronic device, and transfer tool | |
| CN109299756A (en) | Method for preventing the structure forged, palm off or reused and being used to distinguish forgery, personation or reuse using the structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |