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Method for constructing amorphous photonic crystal on substrate

A technology of photonic crystals and substrates, which is applied in the direction of surface coating liquid devices, coatings, pretreatment surfaces, etc., can solve the problems of reducing the use prospects and strong limitations of amorphous photonic crystals

Pending Publication Date: 2022-04-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, considering that amorphous photonic crystals can only be formed on the surface of porous substrates with water-permeable particles in this technology, the limitations are too strong, which greatly reduces the application prospects of amorphous photonic crystals in various application fields.

Method used

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  • Method for constructing amorphous photonic crystal on substrate
  • Method for constructing amorphous photonic crystal on substrate
  • Method for constructing amorphous photonic crystal on substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1) Under normal temperature and pressure, monodisperse SiO with a particle size of 215nm 2 The microspheres are dispersed in a mixed solution of water, ethanol and methanol with a volume ratio of 1:1:1 to obtain a colloidal particle suspension with a mass fraction of 10%.

[0054] 2) Take a 3cm*3cm glass sheet, use plasma cleaning equipment to make the substrate hydrophilic, and ultrasonically clean it in ethanol solution for 3 times, and dry it with nitrogen.

[0055] 3) Take a porous alumina sheet of 3cm*3cm, put it in a glass bottle with a volume of 0.5L, add 1ml of ethanol solution containing 5% propylsiloxane by volume, and heat it in an oven at 70 degrees Celsius for 12 hours.

[0056] 4) Drop 50 microliters of the colloidal particle suspension onto the glass sheet, and use a 18# roll-coating rod to build a thin layer of nanosphere emulsion with a thickness of 20 microns on the surface of the glass sheet.

[0057] 5) Put the modified porous alumina sheet upside d...

Embodiment 2

[0059] 1) Under normal temperature and pressure, disperse monodisperse MOF colloidal particles with a particle size of 250 nm in a mixed solution with a methanol / water volume ratio of 4:1 to obtain a colloidal particle suspension with a solid content of 10 wt%.

[0060] 2) Take a 4cm*16cm PET sheet, use plasma cleaning equipment to make the substrate hydrophilic, and ultrasonically clean it in ethanol solution for 3 times, and dry it with nitrogen.

[0061] 3) Take a 4cm*16cm piece of Epson photo paper, stick it on the side of a cylinder with a diameter of 5cm, and make a circle.

[0062] 4) Put the photo paper cylinder in a glass bottle with a volume of 0.5 L, add 1 ml of ethanol solution containing 5% propylsiloxane by volume, and heat in an oven at 70 degrees Celsius for 12 hours.

[0063] 5) Add 200 microliters of the colloidal particle suspension to the PET sheet, and use a 20# roller coating rod to build a thin layer of the colloidal particle suspension with a thickness ...

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Abstract

The invention relates to the field of photonic crystals and amorphous photonic crystal materials, in particular to a method for constructing an amorphous photonic crystal on a substrate. The preparation method comprises the following steps: dispersing monodisperse colloidal microspheres in a water-phase solvent to obtain colloidal particle suspension; constructing a colloidal particle suspension thin layer on the surface of the substrate 1; a thin film which has strong absorption capacity on a water-phase solvent and can prevent colloid particles from permeating is used as a substrate 2, and the surface of the substrate 2 is modified by utilizing a chemical grafting technology; inversely arranging the modified surface of the substrate 2 on the surface of the substrate 1, quickly removing the solvent in the colloidal particle suspension thin layer of the substrate 1 by utilizing the strong absorption force of the substrate 2 on the water-phase solvent, and forming the amorphous photonic crystal on the surface of the substrate 1; and removing the substrate 2 to obtain the amorphous photonic crystal material on the surface of the substrate 1. The technology for constructing the amorphous photonic crystal has the advantages of being high in speed, capable of achieving large-scale preparation, free of limitation of substrate materials, capable of regulating and controlling the amorphous photonic crystal structure and the like.

Description

technical field [0001] The invention relates to the field of photonic crystals and amorphous photonic crystal materials, in particular to a method for constructing amorphous photonic crystals on a substrate. Background technique [0002] Photonic crystals are ordered structures formed by the periodic arrangement of materials with different dielectric constants in space. This periodic arrangement enables the photonic crystal to form a photonic band gap, and the light whose wavelength falls in the band gap is forbidden to propagate and reflected. When the forbidden band of the photonic crystal is within the wavelength range of visible light, the light of this wavelength cannot pass through the photonic crystal, but forms coherent diffraction on the surface of the photonic crystal, and the photonic crystal will display the color of light of this wavelength. Due to their unique optical properties, photonic crystals are widely used in various display anti-counterfeiting material...

Claims

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Application Information

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IPC IPC(8): B05D7/24B05D3/00C03C17/23C08J7/06
Inventor 柏凌韩超凡黄靖然李远凡李江龙朱金凤
Owner JIANGSU UNIV
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