CN107353704A - A kind of method of cellulose photonic crystal pattern - Google Patents

A kind of method of cellulose photonic crystal pattern Download PDF

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Publication number
CN107353704A
CN107353704A CN201710709862.5A CN201710709862A CN107353704A CN 107353704 A CN107353704 A CN 107353704A CN 201710709862 A CN201710709862 A CN 201710709862A CN 107353704 A CN107353704 A CN 107353704A
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cellulose
photonic crystal
patterning
deposition substrate
dispersion liquid
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张静
沈宇
周进
陈捷
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NANJING WISDOM BIOTECHNOLOGY Co Ltd
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NANJING WISDOM BIOTECHNOLOGY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/08—Printing inks based on natural resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
    • B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
    • B81C1/00349—Creating layers of material on a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
    • B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
    • B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C08B5/14—Cellulose sulfate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

The present invention relates to the method for patterning, more particularly to a kind of method of cellulose photonic crystal pattern, the construction unit of photonic crystal is used as using Cellulose nanocrystal；The material for having hydrophilic pattern using surface is used as deposition substrate；The Cellulose nanocrystal is configured to Cellulose nanocrystal dispersion liquid, scratched in the deposition substrate, and assembling of volatilizing, Cellulose nanocrystal dispersion liquid are deposited on the hydrophilic pattern region of the deposition substrate, and patterned cellulosic photonic crystal is made；The present invention is introduced directly into hydrophily pattern using the method for beam-plasma, laser beam or seal in substrate surface, is then scratched i.e. patternable using nanocrystalline cellulose dispersion liquid, and without extra printing coating procedure, continuous, large-scale production can be achieved；The nanocrystalline schemochrome of patterned cellulosic prepared by the present invention is adjustable；Pass through electrolyte concentration in dispersion liquid, it is possible to achieve the regulation and control to Cellulose nanocrystal assembly behavior, so as to change its schemochrome, realize colorful display.

Description

Method for patterning cellulose photonic crystal
Technical Field
The invention relates to a patterning method, in particular to a method for patterning a cellulose photonic crystal.
Background
The photonic crystal has a periodic dielectric structure and special photonic band gap characteristics, and has a wide application prospect in a plurality of fields such as optical devices, biological coding, sensing and the like because the photonic crystal can realize optical modulation of electromagnetic waves with specific wavelengths. The method for preparing the photonic crystal by self-assembling the construction units of the nano-micron monodisperse colloidal microspheres (such as silicon dioxide microspheres, polystyrene microspheres and the like) is low in cost, good in controllability and convenient to operate. However, with the concern of toxicity of nano powder and the concern of environmental protection and sustainability of materials, researchers are urgently looking for environment-friendly photonic crystal building units to replace the traditional powder materials.
The cellulose nanocrystals are novel photonic crystal construction base materials discovered in recent years, and previous researches prove that the cellulose nanocrystals are in a short rod-shaped regular structure and can spontaneously form a stable periodic chiral arrangement structure under specific conditions so as to generate structural colors. The cellulose nanocrystals are adopted to replace the traditional microsphere type building units, so that the use of the nanospheres can be reduced, and the potential risk is greatly reduced; in addition, cellulose is taken as the most abundant renewable natural polymer material in nature, and has important significance for improving the problems of environmental pollution, energy crisis and the like.
Although research on cellulose photonic crystals has been advanced, an effective method for patterning cellulose photonic crystals is still lacking, and practical application of the method in the fields of optics, sensing, display and the like is greatly limited. Currently, methods for patterning photonic crystals formed by self-assembly focus on inkjet printing, screen printing, 3D printing, and the like. The patterned photonic crystal constructed by ink jet printing has the characteristics of high speed and high efficiency, but the preparation process of the patterned photonic crystal has strict requirements on ink properties, and the ink is generally required to have low viscosity and high surface tension, so the patterned photonic crystal is not suitable for cellulose high-molecular aqueous solution (high viscosity) or cellulose solution (low surface tension) taking an organic solvent as a dispersion liquid; the method has the characteristics of convenient operation, low cost and strong adaptability, but has strict requirements on the surface property of the printing stock and the concentration of printing ink; 3D printing is a novel means for preparing photonic crystals with three-dimensional network topological structures, but the types of printable materials are limited at present, and corresponding research is lacked to solve the problem of dispersion of cellulose nanocrystals in printing material matrixes and the subsequent ordered self-organization problem.
Chinese patent CN2014101303232 describes a wax-based doctor-blade patterning method, which is to perform hydrophilic treatment on the surface of a plastic sheet to be used as a substrate; printing the designed pattern on a substrate with wax; coating the micro-crystalline cellulose suspension subjected to acidolysis by a blade so as to fill the micro-crystalline cellulose suspension subjected to acidolysis into a hollow area without wax, thereby realizing the patterning of cellulose; however, the method requires a wax-spraying printer to wax and cover the substrate in a large range according to the required pattern, so that the production economy and the patterning efficiency are influenced; in addition, the strategy has many implementation steps and is dispersive, and continuous and large-scale production operation cannot be realized.
Disclosure of Invention
The present invention provides a method for patterning a cellulose photonic crystal, which solves the above technical problems in the prior art.
In order to solve the problems, the technical scheme of the invention is as follows:
a method for patterning cellulose photonic crystals,
taking cellulose nanocrystals as a construction unit of the photonic crystal;
taking a material with a hydrophilic pattern on the surface as a deposition substrate;
and preparing the cellulose nanocrystals into a cellulose nanocrystal dispersion liquid, coating the cellulose nanocrystal dispersion liquid on the deposition substrate in a blade mode, volatilizing and assembling the cellulose nanocrystal dispersion liquid, and depositing the cellulose nanocrystal dispersion liquid in a hydrophilic pattern area of the deposition substrate to obtain the patterned cellulose photonic crystals with the structural color of the visible light area.
Preferably, the hydrophilic pattern of the deposition substrate is obtained by a plasma treatment, a laser surface treatment, or a surface treatment method of a soft stamp method.
(1) Plasma process (as shown in fig. 1 a); the method is implemented by firstly selecting a proper mask to cover a hydrophobic substrate, and then carrying out plasma treatment, so that the unprotected area of the substrate is changed from hydrophobic to hydrophilic.
(2) Laser surface treatment (as shown in fig. 1 b); specifically, the method is to rapidly and locally burn a hydrophobic substrate by using a laser beam, and rapidly realize the conversion of a treated part from hydrophobic to hydrophilic by virtue of high-temperature oxidation reaction of the surface.
(3) Soft stamp method (as shown in fig. 1 c); the method comprises the following steps of carrying out hydrophilic treatment on the surface of glass or a silicon wafer to enable the surface to contain hydroxyl, then coating a layer of reagent containing fluorine groups or long alkyl chains on a patterned stamp (such as polymethylsiloxane, rubber and the like), and finally transferring the reagent to the surface of the glass; portions that are contacted by the pattern achieve hydrophobic modification, and portions that are not contacted retain hydrophilic character.
The controllable structure of the hydrophilic pattern area characteristic on the surface of the substrate is realized by the methods, so that the size, the shape, the number and the distribution of the liquid drops in the hydrophilic pattern area are controlled in the blade coating process of the cellulose nanocrystal dispersion liquid on the deposition substrate.
Preferably, the bulk material of the deposition substrate used is plastic, Polydimethylsiloxane (PDMS) or hydrophobically modified glass, metal, ceramic or silicon wafer.
Preferably, the mass fraction of the cellulose nanocrystals in the cellulose nanocrystal dispersion is 1 to 30 wt%.
Preferably, the cellulose nanocrystal dispersion contains an electrolyte; more preferably, the electrolyte is selected from NaCl, KCl, K2SO4One or more of the above; more preferably, the electrolyte mass fraction is 0.3% to 1%.
Preferably, the solvent of the cellulose nanocrystal dispersion is water or a mixture of water and other solvents (such as any one or more of methanol, ethanol or ethylene glycol).
Preferably, a layer of oil film is covered on the surface of the deposition base in the volatilization assembly process; more preferably, the oil film is any one of fluorine oil, methyl silicone oil, paraffin oil and n-hexadecane.
Preferably, the volatile assembly temperature is 20-50 ℃.
Preferably, the cellulose nanocrystals are obtained by sulphuric acid hydrolysis of bleached wood pulp or filter paper. The cellulose nanocrystals are uniform in size and mostly in the shape of short rods; when the concentration of the cellulose nano-crystalline particles in the solution rises to a certain degree, the cellulose nano-crystalline particles dispersed randomly spontaneously organize the cellulose nano-crystalline particles to form stable chiral arrangement to form a periodic ordered microstructure, and generate structural color.
Specifically, the preparation method of the cellulose nanocrystal comprises the following steps:
dissolving bleached wood pulp or filter paper in sulfuric acid solution under heating and stirring, hydrolyzing for a certain time, diluting with water, and centrifuging for purification.
The preferable conditions of the preparation method of the cellulose nanocrystal are as follows:
the heating temperature range is selected to be 20-75 ℃;
the mass ratio of the bleached cork or filter paper to the sulfuric acid solution is 1:3-1: 20;
the mass percentage concentration of the sulfuric acid is 30-70 wt%;
the hydrolysis time is 10-360 min.
Compared with the prior art, the invention has the advantages that,
the invention provides a novel photonic crystal construction unit-cellulose nanocrystal; the cellulose nanocrystals are adopted to replace the traditional microspheric building units, so that the use of nanopowder is avoided, and the potential risk is greatly reduced; in addition, cellulose is the most abundant renewable natural polymer material in nature, replaces the traditional construction unit, can effectively reduce the use of various organic monomers, and has important significance for improving the problems of environmental pollution, energy crisis and the like.
The invention provides a new method for patterning photonic crystals; compared with the traditional photonic crystal patterning method, the method for inducing selective deposition of the cellulose nanocrystals based on the wettability difference of the surface of the deposition substrate is also feasible for medium-high viscosity ink, has the characteristics of wide applicability, simplicity and high efficiency, and can be used as an important supplement for a photonic crystal patterning means.
According to the invention, a hydrophilic pattern is directly introduced on the surface of the substrate by using a plasma beam, a laser beam or a seal method, and then the pattern can be patterned by using the nanocrystalline cellulose dispersion liquid for blade coating, so that an additional printing and coating process is not required, and the method has the characteristics of simplicity and high efficiency; flexible control is carried out through a mask (a plasma beam method), a computer program (a laser direct writing method) or a stamp shape (a soft stamp method); can realize continuous and large-scale production.
The patterned cellulose nanocrystalline prepared by the invention has adjustable structural color; the assembly behavior of the cellulose nanocrystals can be regulated and controlled through the concentration of the electrolyte in the dispersion liquid, so that the structural color of the cellulose nanocrystals is changed, and colorful display is realized.
Drawings
FIG. 1 is a schematic diagram of construction of a cellulose photonic crystal and patterning of a micro-droplet template;
FIG. 2 is a photograph of a patterned cellulose photonic crystal;
FIG. 3 is an SEM image of a cellulose photonic crystal.
Detailed Description
Example 1: cellulose photonic crystal patterning
Preparing cellulose nanocrystalline dispersion liquid as deposition 'ink', wherein the dispersion liquid adopts deionized water, the cellulose nanocrystalline mass fraction is 10 wt%, and the NaCl mass fraction is 0.3%. After covering the patterned mask on the PDMS, an oxygen plasma treatment (as shown in fig. 1 a) is performed to form a deposition substrate. And carrying out blade coating on the cellulose nanocrystalline ink on a deposition substrate to realize patterned distribution of the ink on the substrate, and drying at normal temperature to obtain the cellulose photonic nanocrystalline pattern with the structural color of the visible light region.
Example 2: cellulose photonic crystal patterning
Preparing cellulose nanocrystalline dispersion liquid as deposition ink, wherein the dispersion liquid is a mixture of deionized water and ethanol (the volume ratio is 1:1), the mass fraction of the cellulose nanocrystalline is 30 wt%, and the mass fraction of the KCl is 1%. An oxygen plasma treatment (as shown in fig. 1 a) is performed after covering a patterned mask over a Polymethylmethacrylate (PMMA) plastic sheet. Then, the cellulose nanocrystalline ink is coated on the substrate in a blade mode, patterned distribution of the ink on the substrate is achieved, a layer of n-hexadecane is covered on the surface of the patterned ink, and then the patterned ink is dried at the temperature of 30 ℃, and the cellulose photon nanocrystalline pattern with the structural color of the visible light region is obtained.
Example 3: cellulose photonic crystal patterning
Preparing cellulose nanocrystalline dispersion liquid as deposition ink, wherein the dispersion liquid is a mixture of deionized water, methanol and ethylene glycol (volume ratio is 1:1:1), the mass fraction of the cellulose nanocrystalline is 1 wt%, and K is2SO4The mass fraction is 0.5%. Fluorine surface modified glass was used as a substrate and laser etching was performed (as shown in fig. 1 b). Then, the cellulose nanocrystalline ink is coated on the substrate in a scraping mode, and the patterned distribution of the ink on the substrate is achieved. And then, covering a layer of hexadecane on the surface of the patterned ink, and drying at 50 ℃ to obtain the cellulose photonic nanocrystalline pattern with the structural color of the visible light region.
Example 4: cellulose photonic crystal patterning
Preparing cellulose nanocrystalline dispersion liquid as deposition 'ink', wherein the dispersion liquid adopts deionized water, the cellulose nanocrystalline mass fraction is 15 wt%, and K2SO4+ KCll mass fraction 0.7%. The piranha-treated hydrophilic glass was hydrophobically modified by the stamp method using 1H, 2H-perfluorooctyltrichlorosilane (as shown in fig. 1 c). Subsequently, the cellulose nanocrystal "ink" is knife coated on the modified substrate to achieve a patterned distribution of the ink on the substrate.And then, covering a layer of methyl silicone oil on the surface of the patterned ink, and drying at normal temperature to obtain the cellulose photonic nanocrystalline pattern with the structural color of the visible light region.
Comparative example 1: cellulose photonic crystal patterning
The other conditions of example 4 were kept unchanged except that the cellulose nanocrystal dispersion did not contain electrolyte, resulting in a cellulose photonic nanocrystal pattern with a structural color in the infrared region.
The other conditions of example 4 were kept unchanged except that the electrolyte content in the cellulose nanocrystal dispersion was 2%, and a cellulose photonic nanocrystal pattern having a structural color could not be obtained.
Example 5: preparation of cellulose nanocrystals
Under the condition of heating and stirring, the bleached wood pulp is dissolved in sulfuric acid solution, and after a certain period of hydrolysis, it is diluted with water, and centrifugally purified.
Wherein,
the heating temperature is 20 ℃;
the mass ratio of the bleached cork to the sulfuric acid solution is 1: 20;
the mass percentage concentration of the sulfuric acid is 30 wt%;
the hydrolysis time is 360 min.
Example 6: preparation of cellulose nanocrystals
Dissolving filter paper in sulfuric acid solution under heating and stirring, hydrolyzing for a certain time, diluting with water, and centrifuging for purification.
Wherein,
the heating temperature range is 75 ℃;
the mass ratio of the bleached cork or filter paper to the sulfuric acid solution is 1: 3;
the mass percentage concentration of the sulfuric acid is 70 wt%;
the hydrolysis time was 10 min.
Example 7: preparation of cellulose nanocrystals
Dissolving bleached wood pulp or filter paper in sulfuric acid solution under heating and stirring, hydrolyzing for a certain time, diluting with water, and centrifuging for purification.
Wherein,
the heating temperature range is selected to be 45 ℃;
the mass ratio of the bleached cork or filter paper to the sulfuric acid solution is 1: 12;
the mass percent concentration of the sulfuric acid is 50 wt%;
the hydrolysis time was 120 min.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent substitutions or substitutions made on the above-mentioned embodiments are included in the scope of the present invention.

Claims (10)

1. A method for patterning a cellulose photonic crystal,
taking cellulose nanocrystals as a construction unit of the photonic crystal;
taking a material with a hydrophilic pattern on the surface as a deposition substrate;
and preparing the cellulose nanocrystals into a cellulose nanocrystal dispersion, coating the cellulose nanocrystal dispersion on the deposition substrate by blade coating, and volatilizing and assembling to obtain the patterned cellulose photonic crystals.
2. The method of patterning a cellulose photonic crystal according to claim 1, wherein the hydrophilic pattern of the deposition substrate is obtained by a plasma treatment, a laser surface treatment or a soft stamp method surface treatment.
3. The method of photonic crystal patterning of cellulose according to claim 1, wherein the bulk material of the deposition substrate is plastic, Polydimethylsiloxane (PDMS) or hydrophobically modified glass, metal, ceramic or silicon wafer.
4. The method of photonic crystal patterning of cellulose according to claim 1, wherein the mass fraction of cellulose nanocrystals in the dispersion of cellulose nanocrystals is 1% to 30%.
5. The method of patterning a cellulose photonic crystal of claim 1, wherein the cellulose nanocrystalline dispersion comprises an electrolyte.
6. The method of photonic crystal patterning of cellulose according to claim 5, wherein said electrolyte is selected from NaCl, KCl, K2SO4One or more of them.
7. The method of patterning a cellulose photonic crystal according to claim 5 or 6, wherein the electrolyte mass fraction is 0.3% to 1%.
8. The method of claim 1, wherein the evaporative assembly process covers the surface of the deposition substrate with an oil film.
9. The method of patterning a cellulose photonic crystal of claim 1, wherein the volatile assembly temperature is 20-50 ℃.
10. The method of patterning a cellulose photonic crystal according to claim 1, wherein the cellulose nanocrystals are obtained by sulfuric acid hydrolysis of bleached wood pulp or filter paper.
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109337451A (en) * 2018-09-27 2019-02-15 西南大学 A kind of composite modified biomass-based fluorescence Meta Materials and its preparation method and application
CN110310964A (en) * 2018-03-27 2019-10-08 北京赛特超润界面科技有限公司 A kind of preparation method of controllable patterned electricity device
CN110467149A (en) * 2018-05-10 2019-11-19 安世亚太科技股份有限公司 A kind of carbon-based function element and preparation method thereof
CN110606962A (en) * 2019-09-16 2019-12-24 东华大学 Method for preparing nano-cellulose liquid crystal micro-grid membrane by two-dimensional domain-limited self-organization
CN112687796A (en) * 2020-12-22 2021-04-20 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Method for preparing multilayer electronic product
CN112788858A (en) * 2020-12-22 2021-05-11 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 High resolution ink jet printing method
CN112822859A (en) * 2020-12-22 2021-05-18 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Pattern forming method for fine circuit printing
CN112829479A (en) * 2020-12-22 2021-05-25 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Stamp for fine circuit printing and printing method
CN115287919A (en) * 2022-08-21 2022-11-04 浙江理工大学 Method for preparing patterned photonic crystal structure chromogenic fabric with iridescent effect by screen printing
CN115558166A (en) * 2022-09-21 2023-01-03 福建农林大学 Method for continuously preparing bamboo-based cellulose effect pigment on large scale

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CN102703092A (en) * 2012-06-01 2012-10-03 南京信息工程大学 Nano-cellulose liquid crystal membrane and application thereof
CN103879953A (en) * 2014-04-02 2014-06-25 东南大学 Wax-based blade coating patterning method

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CN102703092A (en) * 2012-06-01 2012-10-03 南京信息工程大学 Nano-cellulose liquid crystal membrane and application thereof
CN103879953A (en) * 2014-04-02 2014-06-25 东南大学 Wax-based blade coating patterning method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110310964A (en) * 2018-03-27 2019-10-08 北京赛特超润界面科技有限公司 A kind of preparation method of controllable patterned electricity device
CN110467149A (en) * 2018-05-10 2019-11-19 安世亚太科技股份有限公司 A kind of carbon-based function element and preparation method thereof
CN109337451A (en) * 2018-09-27 2019-02-15 西南大学 A kind of composite modified biomass-based fluorescence Meta Materials and its preparation method and application
CN110606962A (en) * 2019-09-16 2019-12-24 东华大学 Method for preparing nano-cellulose liquid crystal micro-grid membrane by two-dimensional domain-limited self-organization
CN110606962B (en) * 2019-09-16 2021-11-02 东华大学 Method for preparing nano-cellulose liquid crystal micro-grid membrane by two-dimensional domain-limited self-organization
CN112822859A (en) * 2020-12-22 2021-05-18 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Pattern forming method for fine circuit printing
CN112788858A (en) * 2020-12-22 2021-05-11 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 High resolution ink jet printing method
CN112829479A (en) * 2020-12-22 2021-05-25 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Stamp for fine circuit printing and printing method
CN112687796B (en) * 2020-12-22 2021-09-17 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Method for preparing multilayer electronic product
CN112822859B (en) * 2020-12-22 2021-10-22 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Pattern forming method for fine circuit printing
CN112687796A (en) * 2020-12-22 2021-04-20 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 Method for preparing multilayer electronic product
CN112788858B (en) * 2020-12-22 2021-11-05 中国科学院苏州纳米技术与纳米仿生研究所广东(佛山)研究院 High resolution ink jet printing method
CN115287919A (en) * 2022-08-21 2022-11-04 浙江理工大学 Method for preparing patterned photonic crystal structure chromogenic fabric with iridescent effect by screen printing
CN115558166A (en) * 2022-09-21 2023-01-03 福建农林大学 Method for continuously preparing bamboo-based cellulose effect pigment on large scale

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Application publication date: 20171117