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Magnetic photonic crystal microsphere material and preparation method thereof

A magnetic photonic crystal and magnetic microsphere technology, applied in metal material coating process, gaseous chemical plating, coating and other directions, can solve the problems of poor mechanical strength, complicated preparation process, etc. The effect of good mechanical stability

Inactive Publication Date: 2019-09-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the common problems of poor mechanical strength and complex preparation process of magnetic photonic crystal microspheres, the present invention provides a magnetic photonic crystal microsphere material with uniform and bright color, strong mechanical stability, and directional movement under the control of a magnetic field. and its preparation method

Method used

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  • Magnetic photonic crystal microsphere material and preparation method thereof
  • Magnetic photonic crystal microsphere material and preparation method thereof
  • Magnetic photonic crystal microsphere material and preparation method thereof

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Embodiment 1

[0041] This embodiment discloses a method for preparing magnetic photonic crystal microspheres, specifically as follows:

[0042] The magnetic microspheres (Fe) with a diameter of 10 μm were ultrasonically cleaned in acetone and ethanol for 3 minutes to remove oil and other impurities on the surface of the microspheres, and then the magnetic microspheres were placed in a vacuum drying oven at a temperature of 20 ° C. Dry for 60 minutes under the condition of 0.05Mpa and pressure to remove excess solvent; then use a plasma cleaner to activate the magnetic microspheres, and activate the treatment for 5 minutes under the conditions of power of 10W, temperature of 20°C and pressure of 15Pa; The processed magnetic microspheres are placed in an atomic layer deposition system, and the temperature of the reaction chamber is raised to 200° C. under vacuum conditions, and high-purity nitrogen gas with a purity of 99.99% is used as a carrier gas, and the flow rate of the carrier gas is 20...

Embodiment 2

[0044] This embodiment discloses a method for preparing magnetic photonic crystal microspheres, specifically as follows:

[0045] The magnetic microspheres (Fe) with a diameter of 50 μm were ultrasonically cleaned in acetone and ethanol for 3 minutes to remove oil and other impurities on the surface of the microspheres, and then the magnetic microspheres were placed in a vacuum drying oven at a temperature of 20 ° C. Dry for 60 minutes under the condition of 0.05Mpa and pressure to remove excess solvent; then use a plasma cleaner to activate the magnetic microspheres, and activate the treatment for 5 minutes under the conditions of power of 10W, temperature of 20°C and pressure of 15Pa; The processed magnetic microspheres are placed in an atomic layer deposition system, and the temperature of the reaction chamber is raised to 200° C. under vacuum conditions, and high-purity nitrogen gas with a purity of 99.99% is used as a carrier gas, and the flow rate of the carrier gas is 20...

Embodiment 3

[0047] This embodiment discloses a method for preparing magnetic photonic crystal microspheres, specifically as follows:

[0048] The magnetic microspheres (Fe) with a diameter of 100 μm were ultrasonically cleaned in acetone and ethanol for 3 minutes to remove oil and other impurities on the surface of the microspheres, and then the magnetic microspheres were placed in a vacuum drying oven at a temperature of 20 ° C. Dry for 60 minutes under the condition of 0.05Mpa and pressure to remove excess solvent; then use a plasma cleaner to activate the magnetic microspheres, and activate the treatment for 5 minutes under the conditions of power of 10W, temperature of 20°C and pressure of 15Pa; The processed magnetic microspheres are placed in an atomic layer deposition system, and the temperature of the reaction chamber is raised to 200° C. under vacuum conditions, and high-purity nitrogen gas with a purity of 99.99% is used as a carrier gas, and the flow rate of the carrier gas is 2...

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Abstract

The invention provides a magnetic photonic crystal microsphere material and a preparation method thereof. A magnetic microsphere is used as a core, and a one-dimensional photonic crystal is prepared by alternately depositing films with different refractive indexes on the surface of the magnetic microsphere through an atomic layer deposition method. Due to the fact that the core is ferromagnetic, the core can be controlled to directionally move through a magnetic field; by controlling the thickness of the films, the color of the magnetic photonic crystal microsphere can be precisely regulated,and the color of the magnetic photonic crystal microsphere is bright and has no dependency on angle; it is proved by sanding experiments that compared with magnetic photonic crystal microspheres prepared through traditional methods, the magnetic photonic crystal microsphere prepared through the method has excellent mechanical stability; and the preparation method is simple in technological process, quite slight in pollution and environmentally friendly and has good application prospects.

Description

technical field [0001] The invention belongs to the field of preparation of photonic crystal microspheres, and in particular relates to a one-dimensional magnetic photonic crystal microsphere material with a core-shell structure and a preparation method thereof. Background technique [0002] Photonic crystals are microstructures formed by periodic arrangements of media with different refractive indices. Photonic crystals have photonic band gaps, which can selectively prohibit the propagation of light in a certain band. This special property makes them have good application prospects in the fields of sensing, display, anti-counterfeiting, and decoration. Planar photonic crystals with ordered structures are generally angle-dependent, and their color is related to the viewing angle. This angular dependence is disadvantageous for many application orientations. For example, in the field of sensing, the color of planar photonic crystals will change with the viewing angle, and a ...

Claims

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Application Information

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IPC IPC(8): C23C16/455C23C16/02C23C16/40
CPCC23C16/0245C23C16/402C23C16/403C23C16/405C23C16/407C23C16/45529
Inventor 牛文斌郑宇张淑芬
Owner DALIAN UNIV OF TECH
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