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Immersed explicit-implicit photonic crystal surface and manufacturing method thereof

A photonic crystal and substrate surface technology, applied in optics, optical components, instruments, etc., can solve the problems of high technical threshold of response time, single anti-counterfeiting means, and high production cost, and achieve a wide range of applications, strong expansibility, and simple preparation. Effect

Active Publication Date: 2017-07-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned responsive photonic crystals are used for anti-counterfeiting, and have the advantages of bright colors, obvious changes, short response time and high technical threshold, but there are also high production costs, single anti-counterfeiting means, and the possibility of being imitated by responsive dyes

Method used

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  • Immersed explicit-implicit photonic crystal surface and manufacturing method thereof
  • Immersed explicit-implicit photonic crystal surface and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0032] 1) Preparation of photonic crystals: prepare a solution of colloidal particles, and assemble the colloidal particles onto the surface of the substrate to form photonic crystals by one of the methods of pulling, depositing, spraying, and scraping.

[0033] 2) Modification of photonic crystals: in step 1) the surface of the photonic crystals is dripped with a reaction solution and covered with a mask. After ultraviolet light is irradiated for a certain period of time, the part that is not covered by the mask forms a modified photonic crystal. Remove excess solution.

[0034] 3) Replacing the reaction solution and the mask, repeating step 2), the part not covered by the mask and unreacted forms the modified photonic crystal. Repeat step 2) until the photonic crystal reaction is complete or no further modification is required.

[0035] In one embodiment of the present invention, in the preparation method of photonic crystal patterns revealed by immersion in water, the reac...

Embodiment 1

[0036] Example 1: Preparation of glass surface immersed in water to reveal photonic crystal surface

[0037] (1) Disulfide bond for surface modification of silica colloidal particles: Disperse silica particles in ethanol and add appropriate amount of bis-[3-(triethoxysilyl)propyl]-disulfide to obtain surface modification Silica particles with disulfide bonds;

[0038] (2) Preparation of the photonic crystal body: insert the clean glass slide vertically into the solution of the particles obtained in (1), place it in a dry environment at 40 degrees Celsius, and the particles will be deposited on the glass slide with the solvent volatilization, take it out after 4 days, and deposit the obtained photons The crystal body has a certain degree of hydrophobicity and does not change color when immersed in water.

[0039](3) Preparation of the superhydrophobic photonic crystal part: drip tridecafluoro-n-octyl acetone solution on the surface of the photonic crystal body described in ste...

Embodiment 2

[0042] Example 2: Preparation of metal surface immersed in water to reveal photonic crystal surface

[0043] (1) Disulfide bond for surface modification of silica colloidal particles: Disperse silica particles in ethanol and add appropriate amount of bis-[3-(triethoxysilyl)propyl]-disulfide to obtain surface modification Silica particles with disulfide bonds;

[0044] (2) Preparation of the photonic crystal body: Concentrate the solution described in (1), and use a spray gun to spray on the surface of the metal sheet covered with the template to obtain the photonic crystal body. When spraying to a certain thickness, the gained photonic crystal body has superhydrophobic sex.

[0045] (3) Preparation of the hydrophilic photonic crystal part: add ethyl acrylate ethanol solution dropwise on the surface of the photonic crystal body described in step (2) and cover the template, after ultraviolet light irradiation for a certain period of time, the part not covered by the template is...

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Abstract

An immersed explicit-implicit photonic crystal surface and a manufacturing method thereof are disclosed. The immersed explicit-implicit photonic crystal body is formed through assembling colloid particles whose surfaces contain disulfide bond. Click chemistry is grafted with different groups in different portions of the photonic crystal body so that different immersion performance is achieved. Several kinds of photonic crystals which are grafted with chemical groups possess a same color with the photonic crystal body under a normal state, and color changes of each portion when the photonic crystals are immersed in water are different. Through the above mode, an immersed explicit-implicit photonic crystal pattern can be acquired. Through the above mode, the immersed explicit-implicit photonic crystal pattern possesses advantages that extensibility is high; the manufacturing method is simple; and an application range is wide and so on.

Description

technical field [0001] The invention relates to the field of photonic crystals, in particular to a water-immersed photonic crystal surface and a preparation method thereof. Background technique [0002] Photonic crystal is a concept independently proposed by S.John and E.Yablonovitch in 1987. The so-called photonic crystal is a kind of material with photonic bandgap characteristics whose dielectric constant is periodically distributed in space. Electromagnetic waves in the band are forbidden to propagate, so light of a specific wavelength cannot pass through the photonic crystal and be reflected back. Photonic crystals are materials with a strong ability to modulate photons. People can design and manufacture photonic crystals and their devices to achieve the purpose of controlling photon motion. Therefore, its research has received extensive attention and development, especially in optical devices, optical Photonic crystals are considered to have great potential application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/00
CPCG02B1/005
Inventor 谢卓颖陈嘉伦杜鑫刘盼苗顾忠泽
Owner SOUTHEAST UNIV