A kind of magnetochromic photonic crystal material and preparation method thereof

A photonic crystal and magnetostrictive technology, applied in the field of materials, can solve the problems of single color, small discoloration range and complexity, and achieve the effects of simple preparation method, low cost and uniform structure

Active Publication Date: 2019-07-02
MUDANJIANG MEDICAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of complexity, small discoloration range and single color existing in the existing preparation methods of silica photonic crystals, the present invention provides a simple, low-cost and wide discoloration range, which can achieve multi-color discoloration such as red, yellow and blue. preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of magnetochromic photonic crystal material and preparation method thereof
  • A kind of magnetochromic photonic crystal material and preparation method thereof
  • A kind of magnetochromic photonic crystal material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] First, the invention provides a method for preparing a magnetochromic photonic crystal material, comprising the steps of:

[0035] (1) Preparation of monodisperse silica microsphere colloid: mix ethyl orthosilicate, liquid alcohol and concentrated ammonia water, and then stir under airtight conditions to prepare monodisperse silica microsphere colloid.

[0036] The present invention adopts improved The preparation of silica microspheres by this method is not only simple, but also has good repeatability and good monodispersity.

[0037] The purpose of adjusting the particle size of the silica microspheres can be achieved by controlling the addition amount of raw material reagents. Preferably, when the volume ratio of the tetraethyl orthosilicate, liquid alcohol and concentrated ammonia water is controlled within the range of (1~2):(10~30):(10~30), the 100nm~500nm Silica microspheres. In addition, during preparation, the present invention controls the reaction tempera...

Embodiment 1

[0060] (11) Preparation of monodisperse silica microsphere colloid.

[0061] Add 100mL of methanol, 20ml of tetraethyl orthosilicate, and 100mL of concentrated ammonia water (ammonia solution with a mass fraction of 35%) into a three-necked flask, and stir at 20°C for 10 hours to obtain monodisperse silica microsphere colloids.

[0062] (12) Preparation of functionalized metal materials.

[0063] (a) Prepare solution: mix 20mL acetyl chloride and 50mL first organic solvent to prepare acetyl chloride solution; mix 10g anhydrous FeCl 3 Mix with 20mL of the first organic solvent to prepare the first metal solution; 20g of anhydrous FeCl 3 Mix with 50mL of the first organic solvent to prepare the second metal solution;

[0064] (b) Reaction: first mix the first metal solution and acetyl chloride solution, and then add the second metal solution after the solid is completely dissolved, and then react at 15°C for 10 hours; pour all the reaction products into ice water, and the wate...

Embodiment 2

[0074] (21) Preparation of monodisperse silica microspheres.

[0075] The steps are the same as (11), and the differences are shown in Table 1.

[0076] (22) Preparation of functionalized metal materials.

[0077] The steps are the same as (12), and the differences are shown in Table 2.

[0078] Finally, 1,1'-diacetylferrocene, a functionalized metal material crystal, was obtained.

[0079] (23) Preparation of magnetochromic photonic crystal materials.

[0080] The steps are the same as (13), and the differences are shown in Table 3.

[0081] The transmission spectrum change of the photonic crystal material is tested under the conditions of 200mT, 400mT, 600mT and 800mT external magnetic field. The change of the transmittance of the photonic crystal material at a wavelength of 550nm was tested by a Maya 2000 fiber optic spectrometer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a magnetic photochromic photonic crystal material and a preparation method thereof. The preparation method comprises the three steps of (1) preparing monodisperse silica microsphere colloid; (2) synthesizing a functional metal material; (3) preparing the magnetic photochromic photonic crystal material. The preparation method provided by the invention is simple. The photonic crystal material prepared by the method has a core-shell structure; in the structure, silica microspheres are taken as a core, and metal ions attached to the surfaces of the silica microspheres are taken as a shell. The metal ions have superparamagnetism, so that the photonic crystal material also has magnetic response performance. When an appropriate magnetic field is applied to the photonic crystal material, the volume locations or volumes of metallic particles are changed, so that the cluster lattice structure of photonic crystals changes, the position of a photonic forbidden band changes, and the colors of crystals are accordingly changed. Furthermore, the silica microspheres are uniform in structures and good in dispersity; therefore, the prepared nano photonic crystal material prepared by the method has the advantages of being uniform in crystal structure and rich in structural color.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a magnetochromic photonic crystal material and a preparation method thereof. Background technique [0002] Photonic crystals are inorganic or organic colloidal microspheres with a size of one hundred nanometers to several microns that self-assemble under the action of a driving force to form a certain ordered structure. This ordered colloidal microsphere structure is usually called It is photonic crystal, colloidal crystal or artificial opal structure. Due to its excellent optical properties, photonic crystals have become the basic materials of a new generation of optoelectronic devices. They can also be used as an ideal model system for the following basic phenomena, and can be used for mechanism research on hot issues such as phase transitions and pyrolysis processes. In addition, the photonic crystal itself can also be used as a template, which can be perfectly integrated w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/00
CPCG02F1/0036
Inventor 李方娟赵玉佳单明柱吴宜艳沈广志董默王晶华邹辉孟繁钦郭强
Owner MUDANJIANG MEDICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap