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Method for preparing large-size three-dimensional photonic crystal through constant-temperature liquid baking method

A photonic crystal, large-scale technology, applied in the directions of crystal growth, chemical instruments and methods, solutions from liquid solvents at room temperature, etc., can solve the problem that the structure of three-dimensional photonic crystals is not well arranged, prone to large-area defects, and three-dimensional photonic crystal defects. and other problems, to achieve the effect of novel idea, good structure and short time-consuming

Inactive Publication Date: 2019-07-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the processing time of this method is generally about one week and the prepared three-dimensional photonic crystal has relatively large defects.
The vertical self-assembly method is good for nanoscale microspheres to form three-dimensional photonic crystals, but the micron-scale polymer material microspheres with larger diameters sink to the bottom due to the greater gravity and cannot be formed in the vertical glass. A regular three-dimensional photonic crystal structure is formed on the surface of the sheet, and the preparation time is generally 3-5 days and is relatively long
In addition, the electrophoresis method can prepare large-scale three-dimensional photonic crystals in a short period of time, but the prepared three-dimensional photonic crystal structure is not very well arranged, and large-area defects are prone to occur.

Method used

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  • Method for preparing large-size three-dimensional photonic crystal through constant-temperature liquid baking method
  • Method for preparing large-size three-dimensional photonic crystal through constant-temperature liquid baking method
  • Method for preparing large-size three-dimensional photonic crystal through constant-temperature liquid baking method

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Embodiment 1

[0025] Such as Figure 1 to Figure 2 A method for preparing a large-size three-dimensional photonic crystal by a constant temperature liquid baking method includes the following steps:

[0026] 1) Prepare polystyrene microspheres with micron size and uniform particle size, the outer diameter of the polystyrene microspheres is 1 μm-10 μm, the substrate 3 after hydrophilic treatment, the dispersion medium, and the temperature is Constant temperature water at 57°C, the first container 1 and the second container 2 which is smaller in size than the first container 1 and has good thermal conductivity. In this embodiment, the substrate 3 is made of glass flakes, and the dispersion medium is absolute ethanol. The first container 1 is a beaker, the second container 2 is a glass Petri dish, and the outer diameter of the polystyrene microspheres is 1 μm;

[0027] 2) putting the polystyrene microspheres into the dispersion medium, and dispersing the polystyrene microspheres in the disper...

Embodiment 2

[0031] Such as Figure 1 to Figure 2 A method for preparing a large-size three-dimensional photonic crystal by a constant temperature liquid baking method includes the following steps:

[0032] 1) Prepare polystyrene microspheres with micron size and uniform particle size, the outer diameter of the polystyrene microspheres is 1 μm-10 μm, the substrate 3 after hydrophilic treatment, the dispersion medium, and the temperature is Constant temperature oil at 82°C, the first container 1 and the second container 2 which is smaller in size than the first container 1 and has good thermal conductivity. In this embodiment, the substrate 3 is made of silicon wafers, and the dispersion medium is deionized water. The first container 1 is a beaker, the second container 2 is a glass Petri dish, and the outer diameter of the polystyrene microspheres is 10 μm;

[0033] 2) putting the polystyrene microspheres into the dispersion medium, and dispersing the polystyrene microspheres in the disper...

Embodiment 3

[0037] Such as Figure 1 to Figure 2 A method for preparing a large-size three-dimensional photonic crystal by a constant temperature liquid baking method includes the following steps:

[0038] 1) Prepare polystyrene microspheres with micron size and uniform particle size, the outer diameter of the polystyrene microspheres is 1 μm-10 μm, the substrate 3 after hydrophilic treatment, the dispersion medium, and the temperature is Constant temperature oil at 70°C, the first container 1 and the second container 2 which is smaller in size than the first container 1 and has good thermal conductivity. In this embodiment, the substrate 3 is made of strontium titanate wafer, and the dispersion medium is glycerol Alcohol, the first container 1 is a beaker, the second container 2 is a glass Petri dish, and the outer diameter of polystyrene microspheres is 5 μm;

[0039] 2) putting the polystyrene microspheres into the dispersion medium, and dispersing the polystyrene microspheres in the ...

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Abstract

The invention discloses a method for preparing a large-size three-dimensional photonic crystal through a constant-temperature liquid baking method. The method is characterized by comprising the following steps that 1, polymer material colloidal microspheres, a substrate, a dispersion medium, constant-temperature liquid, a first container and a second container are prepared, wherein the particle size of the polymer material colloidal microspheres is in a micron size and is uniform, the substrate is obtained through hydrophilization, the temperature of the constant-temperature liquid is a DEG C,the size of the second container is smaller than that of the first container, and the thermal conductivity of the second container is good; 2, the polymer material colloidal microspheres are put intothe dispersing medium, the polymer material colloidal microspheres are dispersed in the dispersion medium through ultrasonic vibration, and a mixed solution with the concentration of b% is obtained;3, the constant-temperature liquid is poured into the first container, the second container is put into the constant-temperature liquid to float, the substrate is put into the second container, and the substrate is heated for c minute by using the constant-temperature liquid; 4, the mixed solution is dropwise added onto the substrate, after a solvent is volatilized, the constant-temperature liquidis used for continuous heating, and the colloidal three-dimensional photonic crystal made of the polymer material colloidal microspheres is obtained. The method is novel in concept, reasonable in design and easy and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of material chemistry, in particular to a method for preparing large-size three-dimensional photonic crystals by a constant-temperature liquid baking method. Background technique [0002] Photonic Crystal was independently proposed by S.John and E.Yablonovitch in 1987. It is an artificial microstructure formed by periodic arrangement of media with different refractive indices. Photonic crystals are photonic bandgap materials. From the perspective of material structure, photonic crystals are a type of artificially designed and manufactured crystals with periodic dielectric structures on the optical scale. Similar to the modulation of the electronic wave function by the semiconductor lattice, the photonic bandgap material can modulate the electromagnetic wave with the corresponding wavelength---when the electromagnetic wave propagates in the photonic bandgap material, it is modulated due to the existence of Br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/58C30B29/18C30B7/02
CPCC30B7/02C30B29/18C30B29/58
Inventor 李仁玢孟子晖邱丽莉王树山薛敏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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