Blue-green hollow monox photonic crystal structural color film and preparing method thereof

A technology of hollow silicon oxide and photonic crystals, which is applied in the field of blue-green hollow silicon oxide photonic crystal structural color thin films and its preparation, and can solve the problems of low reflection intensity of photonic crystals, limiting the application of hollow spherical photonic crystals, and small modulation of effective refractive index. , achieve bright colors, high saturation, and solve the effect of easy fading

Active Publication Date: 2016-03-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an innovative way for making colored films called yellow green or red-yellow ones without adding any materials like dyes. It involves modifying certain surfaces of these colors into tiny particles made up of SiO2 microparticles mixed together at specific distances. These modified areas help absorb more invisible lights while also creating darker shades when combined with other layers containing different types of atoms such as oxygen. By doing this, it provides technical benefits over existing methods used for producing specialty products.

Problems solved by technology

Technological Problem: The technical problem addressed in this patents relates to improving the efficiency at producing organized colored patterns made up of small particles called nanopartics (NP) inside an elastic solid material like rubber without losing its effectiveness over time when exposed to external stimuli like sunlight.

Method used

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  • Blue-green hollow monox photonic crystal structural color film and preparing method thereof

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Effect test

Embodiment 1

[0025] A method for preparing a blue-green hollow silicon oxide photonic crystal structural color thin film, comprising the following steps:

[0026] (1) According to the dosage ratio of 0.03g:30mL:2mL of polystyrene (PS) microsphere powder, ethanol and deionized water, weigh PS microsphere powder with a particle size of 240±5nm and ultrasonically disperse it in anhydrous In the mixture of ethanol and deionized water, after the dispersion is complete, add 0.3mL of ammonia water to the mixture according to the ratio of 0.3mL of ammonia water per 30mL of the mixture, stir magnetically at room temperature for 30min, and then quickly add 200uL orthosilicon to the reaction system Ethyl acetate was used as the silicon source, and the PSSiO 2 The core-shell microsphere has a diameter of 300±5nm and a shell thickness of 30±5nm.

[0027] (2) Accurately weigh step (1) to obtain PSSiO 2 Core-shell structure microspheres 0.1g, ultrasonically dispersed in 10mL of absolute ethanol, prepar...

Embodiment 2

[0032] A method for preparing a blue-green hollow silicon oxide photonic crystal structural color thin film, comprising the following steps:

[0033] (1) According to the dosage ratio of 0.03g:35mL:3mL of polystyrene (PS) microsphere powder, ethanol and deionized water, weigh PS microsphere powder with a particle size of 240±5nm and ultrasonically disperse it in anhydrous In the mixture of ethanol and deionized water, after the dispersion is complete, add 0.4mL of ammonia water to the mixture according to the ratio of 0.4mL of ammonia water per 35mL of the mixture, stir and mix by magnetic force at room temperature for 40min, then quickly add 230uL orthosilicon into the reaction system Ethyl acetate was used as a silicon source, and after 8 hours of magnetic stirring at room temperature, it was washed, centrifuged, and dried to obtain PSSiO 2 Core-shell structure microspheres, hollow silicon oxide core microspheres, the diameter of which is 300±5nm, and the thickness of the sh...

Embodiment 3

[0037] A method for preparing a blue-green hollow silicon oxide photonic crystal structural color thin film, comprising the following steps:

[0038](1) According to the dosage ratio of polystyrene (PS) microsphere powder, ethanol and deionized water according to the dosage ratio of 0.03g:40mL:4mL, the PS microsphere powder with a particle size of 240±5nm was ultrasonically dispersed in anhydrous In the mixture of ethanol and deionized water, after the dispersion is complete, add ammonia water to the mixture according to the ratio of 0.5mL ammonia water per 45ml mixture, stir and mix with magnetic force at room temperature for 50min, then quickly add 250uL orthosilicic acid into the reaction system Ethyl ester was used as a silicon source, and after 10 hours of magnetic stirring reaction at room temperature, it was washed, centrifuged, and dried to obtain PSSiO 2 Core-shell microspheres.

[0039] (2) Accurately weigh step (1) to obtain PSSiO 2 Core-shell structure microspher...

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Abstract

The invention discloses a blue-green hollow monox photonic crystal structural color film and a preparing method thereof, and belongs to the technical field of preparation of photonic crystal structural color films. According to the preparing method, organic microsphere polystyrene (PS) is used as a template, the surface of PS is modified with -NH2, the surface of PS is coated with a uniform monox layer through a modified Stober method, finally, a photonic crystal structure of an opal structure is formed on the surface of a glass substrate through self-assembly, and then PS microspheres are carbonized through calcining under protection of reducing atmosphere. As a black substance generated by the carbonized microspheres exists in all hollow monox shells, most incoherent scattered light is absorbed to obtain the blue-green hollow monox photonic crystal structural color film assembled by monox hollow spheres with high saturability. The method is simple in process, the raw materials are easy to obtain, and the blue-green hollow monox photonic crystal structural color film will be widely applied to display, printing, paint, cosmetics, photonic crystals and other aspects.

Description

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Claims

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Application Information

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Owner SHAANXI UNIV OF SCI & TECH
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