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A preparation method of color anti-counterfeiting label based on the micro-nano structure of butterfly wing scales

A technology of anti-counterfeiting marks and micro-nano structures, applied in the field of bionics

Inactive Publication Date: 2019-02-19
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretical and experimental research on it has been going on in the world, and the bionic work aimed at mixing colors has been going on, but at present, the applied research of using this bionic structure to prepare color anti-counterfeiting signs has not been realized in our country.

Method used

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  • A preparation method of color anti-counterfeiting label based on the micro-nano structure of butterfly wing scales
  • A preparation method of color anti-counterfeiting label based on the micro-nano structure of butterfly wing scales

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Flowchart such as Figure 1~2 As shown, the silver foil is pretreated first, and then a single-layer silica sphere template is arranged on the silver foil. Due to its self-organization characteristics, a periodic arrangement can be spontaneously formed, and then the reverse structure of the template is obtained by electroplating. Finally, ten cycles of aluminum oxide and zinc oxide are alternately plated using atomic layer deposition technology. Specifically include the following steps:

[0025] a) Cut the silver foil paper into a rectangle of 10mm×20mm;

[0026] b) The cut silver foil is immersed in acetone, ultrasonicated in an ultrasonic bath for 15 minutes, then cleaned with deionized water, and dried with nitrogen;

[0027] c) Then immerse the silver-coated slide in HCl: H 2 o 2 :H 2 In the mixture of O=1:1:6, sonicate in the ultrasonic tank for 15min, then wash with deionized water, N 2 Blow dry for later use;

[0028] d) Put the solution of monodisperse po...

Embodiment 2

[0035] A method for preparing a colored anti-counterfeiting label based on the micro-nano structure of butterfly wing scales, the method comprising the following steps:

[0036] (1) Pretreatment of the silver substrate: place the silver substrate in an organic solvent, sonicate for 10 minutes, then clean it with deionized water, and dry it with nitrogen; then put the cleaned silver substrate into HCl with a molar ratio of: h 2 o 2 :H 2 In a mixture of O=1:1:6, sonicate for 10 min, then wash with deionized water, and blow dry with nitrogen.

[0037] (2) A single-layer bead template is arranged on the silver substrate by the pulling method, and the reverse structure is obtained on the template by the electroplating method: the silver substrate is completely immersed in the pulling solution for 10 minutes, and then pulled out at a uniform speed. After the solution volatilized, a single-layer bead template was arranged on the silver substrate, and then the silver substrate with...

Embodiment 3

[0041] A method for preparing a colored anti-counterfeiting label based on the micro-nano structure of butterfly wing scales, the method comprising the following steps:

[0042] (1) Pretreatment of the silver substrate: the silver substrate is placed in an organic solvent, ultrasonicated for 60 minutes, then cleaned with deionized water, and dried with nitrogen; then the cleaned silver substrate is entered into a molar ratio of HCl: h 2 o 2 :H 2 In a mixture of O=1:1:6, sonicate for 60 min, then wash with deionized water, and blow dry with nitrogen.

[0043](2) Arrange a single-layer bead template on the silver substrate by the pulling method, and obtain the reverse structure on the template by the electroplating method: immerse the silver substrate in the pulling solution for 10 minutes, and then pull it out at a uniform speed. After the solution volatilized, a single-layer bead template was arranged on the silver substrate, and then the silver substrate with the single-la...

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Abstract

The invention relates to an anti-counterfeit colored mark preparation method based on a butterfly wing scale micro-nano structure. The method includes the following steps that 1, a silver substrate is pretreated; 2, single-layer ball templates are arranged on the silver substrate through the Czochralski method, and a reverse structure is obtained on the templates through an electroplating method; 3, the surface of the reverse structure is alternately and periodically plated with a plurality of films through the combination of the atomic layer deposition method with the mask method, and a finished anti-counterfeit colored mark is obtained. Compared with the prior art, the mark is of a pit structure, and the side and bottom of the mark present different colors because of different incident angles. Moreover, the side of the pit structure can change the polarization direction of polarized light by ninety degrees. Therefore, by rotating two polarizing plates, color difference between a portion having the pit structure and a portion free of the pit structure can be seen, the preparation process is safe and free of toxins, and the effect is good.

Description

technical field [0001] The invention belongs to the technical fields of bionics and nanophotonics, and in particular relates to a method for preparing a color anti-counterfeiting mark based on the micro-nano structure of butterfly wing scales. Background technique [0002] At present, the anti-counterfeiting technology on the market generally adopts monochrome anti-counterfeiting technologies such as laser holographic anti-counterfeiting, digital anti-counterfeiting, and printing anti-counterfeiting. Color anti-counterfeiting is highly recognizable and easy to identify, and it can realize fast, accurate and convenient authenticity identification for end users in the market. Existing color anti-counterfeiting generally uses technologies such as optical variable inks. However, with the development of the times, these technologies face problems such as lower technical thresholds and invalid patents. Therefore the development of new color anti-counterfeiting technology has beco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F3/02
CPCG09F3/0294
Inventor 刘锋赵炎亮曹峻李亚南石旺舟
Owner SHANGHAI NORMAL UNIVERSITY