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Biological template based preparation method for magnetic photonic crystals

A technology of photonic crystals and biological templates, applied in the field of materials science, can solve the problems that limit the theoretical research and application of magneto-optical devices, and achieve the effects of good controllability, improved response performance, and simple process

Active Publication Date: 2012-06-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the preparation of three-dimensional magnetic photonic crystals is still a challenging task, this greatly limits the theoretical research and application of magneto-optical devices.

Method used

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  • Biological template based preparation method for magnetic photonic crystals
  • Biological template based preparation method for magnetic photonic crystals
  • Biological template based preparation method for magnetic photonic crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the first step, put butterfly wings into 40wt% CH 3 After 4 hours in the COOH solution, the minerals that are not easy to be removed by sintering are dissolved, and then rinsed with distilled water and dried for later use.

[0028] The second step is the preparation of the precursor solution. FeCl 3 The preparation scheme of the solution: under the condition of a hot water bath, prepare a ferric chloride ethanol solution with a concentration of 0.1mol / L.

[0029] The third step is to soak the processed butterfly wings in the prepared precursor solution for 12 hours

[0030] In the fourth step, after soaking, take out the sample, rinse it with distilled water, and then put it into an oven for drying at a temperature range of 50°C for 10 hours. After drying, sintering at a temperature of 450°C to remove the biological template to obtain a functional material of ferric oxide with a photonic crystal structure of the biological template;

[0031] In the fifth step, th...

Embodiment 2

[0036] In the first step, put butterfly wings into 40wt% CH 3 After 4 hours in the COOH solution, the minerals that are not easy to be removed by sintering are dissolved, and then rinsed with distilled water and dried for later use.

[0037] The second step is the preparation of the precursor solution. FeCl 3 The preparation scheme of the solution: under the condition of a hot water bath, prepare a ferric chloride ethanol solution with a concentration of 0.1mol / L.

[0038] The third step is to soak the processed butterfly wings in the prepared precursor solution for 20 hours

[0039] In the fourth step, after soaking, take out the sample, rinse it with distilled water, and then put it into an oven to dry at a temperature range of 60°C for 10 hours. After drying, sintering at a temperature of 500°C to remove the biological template to obtain a functional material of ferric oxide with a photonic crystal structure of the biological template;

[0040]In the fifth step, the abo...

Embodiment 3

[0042] In the first step, put butterfly wings into 40wt% CH 3 After 4 hours in the COOH solution, the minerals that are not easy to be removed by sintering are dissolved, and then rinsed with distilled water and dried for later use.

[0043] The second step is the preparation of the precursor solution. FeCl 3 Solution preparation scheme: under the condition of hot water bath, prepare ferric chloride ethanol solution with a concentration of 1mol / L.

[0044] The third step is to soak the processed butterfly wings in the prepared precursor solution for 48 hours

[0045] In the fourth step, after soaking, take out the sample, rinse it with distilled water, and then put it into an oven to dry at a temperature range of 80°C for 10 hours. After drying, sintering at a temperature of 800°C to remove the biological template to obtain a functional material of ferric oxide with a photonic crystal structure of the biological template;

[0046] In the fifth step, the above-mentioned pro...

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Abstract

Belonging to the field of material science, the invention relates to a biological template preparation based preparation method for magnetic photonic crystals. The method comprises the following steps of: step one, conducting surface pretreatment on a biological template; step two, preparing a precursor metal sol-gel solution; step three, putting the well treated biological template into the prepared precursor solution for dipping treatment; step four, after dipping, taking out of a sample, flushing it with distilled water, and conducting drying and roasting to remove the biological template, thus obtaining a ferric oxide material maintaining a photonic crystal structure; and step five, carrying out further sintering and reducing in a mixed gas of hydrogen and argon, thus obtaining a magnetic ferroferric oxide material maintaining a photonic crystal structure. Compared with prior art, the magnetic material with a natural photonic crystal structure prepared in the invention has good response to magnetism-light, thus having potential application prospects in the field of magneto-optical communication devices.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a preparation method of a magneto-optical material with a photonic crystal structure of a butterfly wing. Specifically, it relates to a method for preparing a magneto-optic material on a biological template by secondary sintering. Crystal method. Background technique [0002] Under the action of a magnetic field, the electromagnetic properties of the substance (such as magnetic permeability, magnetization, magnetic domain structure, etc.) will change, making the transmission characteristics of light waves inside it (such as polarization state, light intensity, phase, transmission direction, etc.) The phenomenon that also changes with it is called the magneto-optic effect. Magneto-optical effects include Faraday effect, Kerr effect, Zeeman effect, magneto-induced birefringence effect, and later discovered magnetic circular dichroism, magnetic linear dichroism, magnetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B82Y40/00
Inventor 朱申敏彭文红张荻姚帆殷超
Owner SHANGHAI JIAO TONG UNIV
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