CN112915934B - Honeycomb structure assembly and preparation method and application thereof - Google Patents
Honeycomb structure assembly and preparation method and application thereof Download PDFInfo
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- CN112915934B CN112915934B CN201911238313.XA CN201911238313A CN112915934B CN 112915934 B CN112915934 B CN 112915934B CN 201911238313 A CN201911238313 A CN 201911238313A CN 112915934 B CN112915934 B CN 112915934B
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Abstract
A honeycomb structure assembly and a preparation method and application thereof are provided, wherein the preparation method comprises the steps of mixing an emptying agent solution with a regular triangle colloidal particle dispersion liquid to obtain a mixed solution; and injecting the mixed solution into a curvature sample pool, sealing, and obliquely standing to obtain the honeycomb structure assembly. The invention can obtain a method for obtaining a honeycomb structure assembly, which is characterized in that regular triangle colloid particles are put into a cylindrical tube with a certain curvature, and particles capable of generating evacuation attraction potential are added, so that the regular triangle colloid particles can be assembled into the honeycomb structure assembly.
Description
Technical Field
The invention belongs to the field of colloid self-assembly, and particularly relates to a honeycomb structure assembly and a preparation method and application thereof.
Background
The honeycomb structure is an optimal topological structure covering a two-dimensional plane and composed of regular hexagons, and the structure has very wide application in the field of materials, such as aerospace materials and building materials of the honeycomb structure. Graphene having excellent optical, thermal, electrical, magnetic, etc. properties is also arranged in such a structure. At present, cellular structures are mostly seen in macroscopic and atomic molecular scales, and no documents or patents report that micron-sized colloids can be assembled into the structures. The invention provides a method for assembling micron-sized regular triangular colloidal particles into a honeycomb structure on a curved surface by utilizing evacuation attraction potential, so as to prepare a honeycomb structure material with excellent optical, electric, magnetic and other properties by taking the micron-sized regular triangular colloidal particles as a template.
Disclosure of Invention
In view of the above, one of the main objectives of the present invention is to provide a honeycomb structure assembly, a method for preparing the same and applications thereof, so as to at least partially solve at least one of the above technical problems.
In order to achieve the above object, as one aspect of the present invention, there is provided a method for producing a honeycomb structure assembly, comprising:
mixing the emptying agent solution and the regular triangle colloidal particle dispersion liquid to obtain a mixed solution;
and injecting the mixed solution into a curvature sample pool, sealing, and obliquely standing to obtain the honeycomb structure assembly.
As another aspect of the present invention, there is also provided a honeycomb structure assembly obtained by the production method as described above.
As another aspect of the invention, the application of the honeycomb structure assembly in the colloid self-assembly field is also provided.
Based on the technical scheme, compared with the prior art, the honeycomb structure assembly and the preparation method and application thereof have at least one of the following advantages:
the invention can obtain a method for obtaining a honeycomb structure assembly, which is characterized in that regular triangle colloid particles are put into a cylindrical tube with a certain curvature, and particles capable of generating evacuation attraction potential are added, so that the regular triangle colloid particles can be assembled into the honeycomb structure assembly.
Drawings
FIG. 1 is a microscope photograph of the assembly of triangular colloidal particles in a hollow tubular passage having an inner diameter of 0.1mm to form a honeycomb structure in example 1 of the present invention;
FIG. 2 is a microscope photograph of the assembly of triangular colloidal particles in a hollow tubular passage having an inner diameter of 0.2mm to form a honeycomb structure in example 2 of the present invention;
FIG. 3 is a microscope photograph of the assembly of triangular colloidal particles in hollow tubular channels with an inner diameter of 0.05mm to form a honeycomb structure in example 3 of the present invention;
FIG. 4 is a microscope photograph of the liquid crystal structure assembled by the triangular colloidal particles of comparative example 1 of the present invention on the plane of the rectangular sample cell.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
The invention discloses a preparation method of a honeycomb structure assembly, which comprises the following steps:
mixing the emptying agent solution with the regular triangle colloidal particle dispersion liquid to obtain a mixed solution;
and injecting the mixed solution into a curvature sample pool, sealing, and obliquely standing to obtain the honeycomb structure assembly.
In some embodiments of the invention, the inclination angle of the curvature sample cell in the inclined resting step is 1 to 50 degrees;
in some embodiments of the invention, the concentration of the evacuation agent in the mixed liquor is 0.01 to 0.1g/mL.
In some embodiments of the present invention, the method for preparing the regular triangle colloidal particle dispersion comprises:
setting a stripping photoresist on a silicon wafer;
arranging colloid photoresist on a silicon wafer provided with stripped photoresist, placing a mask plate with regular triangle patterns on the colloid photoresist, and irradiating by using ultraviolet light to obtain regular triangle colloid particles;
washing and separating the obtained regular triangle colloidal particles, and then adding the obtained regular triangle colloidal particles into a surfactant solution to obtain a monodisperse dispersion liquid of the regular triangle colloidal particles.
In some embodiments of the present invention, the lift-off photoresist comprises at least one of a Lor-1a photoresist, a Lor-10B photoresist, and an OmniCoat photoresist;
in some embodiments of the invention, the colloidal photoresist comprises at least one of a SU-8 photoresist, a polymethylmethacrylate photoresist, a polydimethylglutarimide photoresist;
in some embodiments of the invention, the surfactant comprises at least one of a sodium lauryl sulfate solution, a sodium fatty alcohol ether sulfate solution, and a sodium ethoxylated fatty acid methyl ester sulfonate solution.
In some embodiments of the present invention, the washing and separating step of the obtained regular triangle colloid particles comprises:
washing the silicon wafer covered with the stripping photoresist and the colloid photoresist after the ultraviolet irradiation in a developing solution to obtain colloid particles adhered to the silicon wafer, then washing the silicon wafer in a tetramethyl ammonium hydroxide solution in a shaking way to strip the colloid particles from the silicon wafer, and then centrifuging to obtain the regular triangle colloid particles.
In some embodiments of the present invention, the developing solution comprises at least one of monomethyl ether propylene glycol acetate, xylene, and hydroquinone.
In some embodiments of the invention, the evacuant solution comprises at least one of a polystyrene microsphere solution, a polymethylmethacrylate microsphere solution, a poly-N-isopropylacrylamide microsphere solution;
in some embodiments of the invention, the curvature sample cell comprises a cylindrical glass tubing string.
In some embodiments of the invention, the particle size of the polystyrene microsphere solution is 10 to 500nm.
The invention also discloses a honeycomb structure assembly which is obtained by adopting the preparation method.
The invention also discloses application of the honeycomb structure assembly in the field of colloid self-assembly.
In one exemplary embodiment, the method of preparing the honeycomb structural assembly of the present invention comprises the steps of:
the first step is as follows: and preparing regular triangle colloid particles. In order to facilitate the subsequent stripping of colloid particles from the silicon wafer, firstly, photoresist (namely stripping photoresist) with the trademark of Lor-1a of Microchem company in America is dripped on the silicon wafer, the Lor-1a photoresist coated on the silicon wafer is uniformly coated by a film throwing machine, and the film is baked at 150-200 ℃ to solidify the film. After the silicon wafer coated with the photoresist is cooled to room temperature, the SU-8 photoresist (namely colloidal photoresist) of Microchem company in America is dripped on the silicon wafer to be used as a material of triangular colloidal particles, the SU-8 photoresist coated on the silicon wafer is uniformly coated by a film throwing machine, and the film is baked at 60-95 ℃ to solidify the film. The mask plate with regular triangle pattern was covered and irradiated with ultraviolet lamp of 365nm wavelength. And then washing the silicon wafer in a monomethyl ether propylene glycol acetate developing solution to obtain regular triangle colloidal particles attached to the silicon wafer, washing the silicon wafer with deionized water, then putting the silicon wafer into a tetramethylammonium hydroxide solution, shaking and washing to peel the regular triangle colloidal particles from the silicon wafer into a washing solution, centrifuging the washing solution, transferring a precipitate obtained by centrifugation into a sodium dodecyl sulfate solution, and obtaining a stable monodisperse dispersion liquid of the regular triangle colloidal particles.
The second step: and preparing a cylindrical sample cell. Glue with the thickness of 1mm is coated in the center of the glass slide, the cylindrical glass tube is placed at the position on the glass slide coated with the glue, and the hollow tubular channel is fixed.
The third step: and (3) taking a certain amount of polystyrene microsphere solution with the particle size of 10-500 nm, uniformly mixing with a certain amount of monodisperse regular triangle colloidal particles prepared in the step one, injecting into the cylindrical glass channel prepared in the step two, and gluing at two ends of the channel to form a closed sample space. And standing the sample cell for a period of time at an inclination angle of 1-50 degrees to obtain an assembly body with a honeycomb structure assembled by regular triangular colloid particles.
The technical solution of the present invention is further illustrated by the following specific embodiments in conjunction with the accompanying drawings. It should be noted that the following specific examples are given by way of illustration only and the scope of the present invention is not limited thereto.
The chemicals and raw materials used in the following examples were either commercially available or self-prepared by a known preparation method.
Example 1
The preparation method of the honeycomb structure assembly of the embodiment comprises the following steps:
(1) And preparing regular triangle colloid particles. 2mL of Lor-1a photoresist is dripped on a 4-inch silicon wafer, the Lor-1a photoresist coated on the silicon wafer is uniformly coated by a film throwing machine at the rotating speed of 3000rpm, and the silicon wafer is baked for 2min at 180 ℃. After the silicon wafer coated with the photoresist is cooled to room temperature, the SU-8 photoresist is dripped on the silicon wafer, the SU-8 photoresist coated on the silicon wafer is uniformly coated by a film throwing machine at the rotating speed of 3000rpm, and the silicon wafer is baked for 3min at the temperature of 95 ℃. Covering with a mask having a square pattern with a side length of 3.1 μm, irradiating with an ultraviolet lamp having a wavelength of 365nm for 5 seconds, and baking at 95 deg.C for 3min. Then placing the silicon wafer in a monomethyl ether propylene glycol acetate developing solution for washing for 60s, washing the silicon wafer with deionized water, baking the silicon wafer for 3min at 95 ℃, placing the silicon wafer in a 2.38mol/L tetramethylammonium hydroxide solution, washing the silicon wafer by shaking for 10 hours, centrifuging a washing solution at a centrifugal rotating speed of 2000rpm for 15 minutes, and transferring a precipitate obtained by centrifugation to a 10mM sodium dodecyl sulfate solution to obtain a monodisperse dispersion liquid of regular triangular colloidal particles. Wherein, the side length of the regular triangle colloidal particles is 3.1 μm, and the ratio of the side length of the regular triangle colloidal particles to the diameter of the inner circle of the cylindrical glass tube is 0.031.
(2) And preparing a cylindrical sample cell. A thin layer (1 mm thick) of Norland81 photosensitive adhesive is coated in the center of a glass slide, a cylindrical glass tube with the inner diameter of 0.1mm is placed at the position on the glass slide coated with the photosensitive adhesive, and the position is irradiated for 10 seconds under an ultraviolet lamp with the wavelength of 365nm to cure the photosensitive adhesive and fix a hollow tubular channel.
(3) And (3) uniformly mixing 30 mu L of polystyrene microsphere solution with the particle size of 60nm and the concentration of 0.04g/mL with the monodisperse regular triangle colloid particles prepared in the step (1), injecting the mixture into the cylindrical glass channel prepared in the step (2), coating Norland81 photosensitive adhesive at two ends of the channel, and irradiating the mixture for 60 seconds under an ultraviolet lamp with the wavelength of 365nm to cure the photosensitive adhesive to form a closed sample space. The sample cell was placed at an inclination of 3.5 degrees for 15 weeks to obtain an assembly of a honeycomb structure assembled from regular triangular colloidal particles as shown in fig. 1.
Example 2
This example is different from example 1 only in that the cylindrical sample cell is a sample cell prepared from a cylindrical glass tube having an inner diameter of 0.2mm, and the other steps are identical, and an assembly having a honeycomb structure as shown in fig. 2 is also obtained.
Example 3
This example differs from example 1 only in that the cylindrical sample cell was a sample cell prepared from a cylindrical glass tube having an inner diameter of 0.05mm, and the other steps were identical, and an assembly having a honeycomb structure as shown in FIG. 3 was also obtained.
Comparative example 1
The comparative example is different from example 1 only in that the sample cell is a rectangular sample cell, the sample is assembled in a plane, not a curved surface, no honeycomb-structured assembly is obtained, and the high-density assembly obtained by compression has a liquid crystal structure as shown in fig. 4.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A method of making a honeycomb structure assembly comprising:
mixing the emptying agent solution with the regular triangle colloidal particle dispersion liquid to obtain a mixed solution;
injecting the mixed solution into a curvature sample pool, sealing, and obliquely standing to obtain the honeycomb structure assembly;
wherein the inclination angle of the curvature sample cell in the inclined standing step is 1 to 50 degrees;
the concentration of the emptying agent in the mixed solution is 0.01 to 0.1 g/mL;
the ratio of the side length of the regular triangular colloidal particles to the diameter of the inner circle of the curvature sample cell is not less than 0.015;
the particle size of the emptying agent solution is 10-500 nm;
the emptying agent solution comprises at least one of a polystyrene microsphere solution, a polymethyl methacrylate microsphere solution and a poly N-isopropylacrylamide microsphere solution;
the curvature sample cell includes a cylindrical glass tubing string.
2. The production method according to claim 1,
the preparation method of the regular triangle colloidal particle dispersion liquid comprises the following steps:
setting a stripping photoresist on a silicon wafer;
arranging colloid photoresist on a silicon wafer provided with stripped photoresist, placing a mask plate with regular triangle patterns on the colloid photoresist, and irradiating by using ultraviolet light to obtain regular triangle colloid particles;
washing and separating the obtained regular triangle colloidal particles, and then adding the obtained regular triangle colloidal particles into a surfactant solution to obtain a monodisperse dispersion liquid of the regular triangle colloidal particles.
3. The production method according to claim 2,
the stripping photoresist comprises at least one of Lor-1a photoresist, lor-10B photoresist and Omnicoat photoresist;
the colloid photoresist comprises at least one of SU-8 photoresist, polymethyl methacrylate photoresist and polydimethylglutarimide photoresist;
the surfactant comprises at least one of a sodium dodecyl sulfate solution, a fatty alcohol ether sodium sulfate solution and an ethoxylated fatty acid methyl ester sodium sulfonate solution.
4. The production method according to claim 3,
the washing and separating step of the regular triangle colloid particles comprises the following steps:
washing the silicon wafer covered with the stripping photoresist and the colloid photoresist after the ultraviolet irradiation in a developing solution to obtain colloid particles adhered to the silicon wafer, then washing the silicon wafer in a tetramethyl ammonium hydroxide solution in a shaking way to strip the colloid particles from the silicon wafer, and then centrifuging to obtain the regular triangle colloid particles.
5. The production method according to claim 4,
the developing solution comprises at least one of monomethyl ether propylene glycol acetate, xylene and hydroquinone.
6. A honeycomb structure assembly obtained by the production method according to any one of claims 1 to 5.
7. Use of the honeycomb structure assembly of claim 6 in the field of gel self-assembly.
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