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Method for preparing metal photonic crystals through electrodeposition

A technology of metal photonic crystals and photonic crystals, applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problems of complex process, narrow scope of application, expensive equipment, etc., and achieve simple process, low cost and wide application range wide effect

Active Publication Date: 2018-05-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Photonic crystals prepared by the top-down method have good periodicity and controllable morphology, but the equipment required is expensive and the process is complicated
However, in-situ reduction method, metal salt filling method, and nanoparticle filling method have low filling rate, narrow application range, and uncontrollable thickness of photonic crystals.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of nickel photonic crystal is as follows:

[0041] 1) Synthesis of polystyrene microspheres with a particle size of 300nm: Take 100ml of twice distilled water and add it to a three-necked flask, then add 6.5g of styrene monomer, some methacrylic acid, heat in an oil bath, and stir electromagnetically to heat up the oil bath to Add 0.1 g of initiator potassium persulfate at 75°C, and continue to react at this temperature for 12 hours, and the whole process is under N 2 under protection. Down to room temperature, polystyrene emulsion is obtained;

[0042]2) Soak the cut FTO glass in a mixed solution of diluted concentrated ammonia water and hydrogen peroxide, after the surface has been hydroxylated for 12 hours, take it out, wash it in water and ethanol, and dry it for later use;

[0043] 3) Dilute the synthesized polystyrene emulsion 100 times, pour it into a vial of penicillin, insert the clean FTO glass into the emulsion at an angle, and place ...

Embodiment 2

[0053] The preparation method of silver photonic crystal is as follows:

[0054] 1) Synthesize polystyrene microspheres with particle sizes of 200, 300, 370 and 450nm: take 100ml of twice distilled water and add it to a three-necked flask, then add 6, 6.5, 7.5 and 8g of styrene monomer, some methacrylic acid, Heating in an oil bath and electromagnetic stirring, when the oil bath is heated to 75°C, add 0.1 g of initiator potassium persulfate, and continue to react at this temperature for 12 hours. The whole process is under N 2 under protection. Down to room temperature, polystyrene emulsion is obtained;

[0055] 2) Soak the cut FTO glass in a mixed solution of diluted concentrated ammonia water and hydrogen peroxide, after the surface has been hydroxylated for 12 hours, take it out, wash it in water and ethanol, and dry it for later use;

[0056] 3) Dilute the synthesized polystyrene emulsion 100 times, pour it into a vial of penicillin, insert the clean FTO glass into the e...

Embodiment 3

[0066] The preparation method of platinum photonic crystal is as follows:

[0067] 1) Synthesize polystyrene microspheres with a particle size of 500nm: take 100ml of twice distilled water and add it to a three-necked flask, then add 8.3g of styrene monomer and some methacrylic acid respectively, heat the oil bath and stir it electromagnetically to heat up the oil bath Add initiator potassium persulfate 0.2g at 75°C, continue to react at this temperature for 12h, and the whole process is under N 2 under protection. Down to room temperature, polystyrene emulsion is obtained;

[0068] 2) Soak the cut FTO glass in a mixed solution of diluted concentrated ammonia water and hydrogen peroxide, after the surface has been hydroxylated for 12 hours, take it out, wash it in water and ethanol, and dry it for later use;

[0069] 3) Dilute the synthesized polystyrene emulsion 100 times, pour it into a vial of penicillin, insert a clean FTO glass into the emulsion at an angle, and place i...

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Abstract

The invention relates to a method for preparing metal photonic crystals through electrodeposition. A photonic crystal front template with good sequentiality is deposited on a FTO base through a gravity settling self-assembly method; the front template serves as a cathode, metal positive ions are reduced in an electrolyte, and gaps of the photonic crystal front template are filled with the metal positive ions; and the photonic crystal front template is removed through an organic solvent, and the metal photonic crystals of an inverse opal structure are prepared. By changing the particle sizes ofthe front template, the metal photonic crystals with the hole diameters being 100 nm-1 [mu]m are prepared. By adjusting the cathode-current density and the deposition time, thickness-controllable preparation of the metal photonic crystals is achieved.

Description

technical field [0001] The invention relates to the field of preparation of photonic crystals, in particular to a method for preparing metal photonic crystals by electrodeposition. Background technique [0002] When Wood carried out optical experiments in 1902, he found that when gratings were engraved on the metal surface, the electromagnetic waves could reflect abnormally in the spectrum. In 1960, Stern et al. first proposed the concept of surface plasmon (Surface Plasmon, referred to as SP), that is, surface plasmon refers to the electron density wave that propagates along the metal surface along the metal and medium interface. Yablonovitch and John proposed the concept of photonic crystals respectively in 1987. It was not until 1998 that Ebbesen et al. found that normal incident light had enhanced transmission in metal photonic crystal flat plates. Researchers have started a lot of systematic research on periodic metal nanostructures. [0003] Metal photonic crystals ...

Claims

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Application Information

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IPC IPC(8): B22F1/02C25D5/54C08F112/08
CPCB22F1/0003C25D5/54C08F112/08B22F1/17
Inventor 胡晓斌蔡子贺
Owner SHANGHAI JIAO TONG UNIV
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