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Method for preparing structural color three-dimensional array patterns based on sessile droplets

A three-dimensional array and structural color technology, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve the problems of poor stability of droplet pixels, cumbersome process, and poor designability of patterns, so as to inhibit particle settlement , The process steps are simple, and the effect of ensuring stability

Active Publication Date: 2022-04-19
南京宇源新能碳中和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a method for preparing a three-dimensional array pattern of structural color based on immobilized liquid droplets, which solves the problem of poor designability of patterns, poor stability of droplet pixels, cumbersome process, and inability to display colorfully in existing methods And the problem that the form and structure of the deposited liquid cannot be controlled

Method used

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  • Method for preparing structural color three-dimensional array patterns based on sessile droplets
  • Method for preparing structural color three-dimensional array patterns based on sessile droplets
  • Method for preparing structural color three-dimensional array patterns based on sessile droplets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of structural color ink

[0028] Take 50 μL of an aqueous solution containing 0.1% silicon dioxide-coated ferric oxide colloidal particles, dissolve 50 μL of 5% hyperbranched polyethylene glycol diacrylate in the above solution, adjust the pH=9, and put it into the first syringe; take 100 μL 1% mercaptolated hyaluronic acid, adjust the mixed solution to pH=7.5 and fill it into the second syringe, place the two syringes on the ink supply device 1 of the microfluidic device, and inject the aqueous solution of the two syringes into the 3D through the ink supply device In the printing nozzle, the structural color ink is made by mixing.

[0029] (2) Preparation of hydrophobic-hydrophilic patterned printing substrate

[0030] Such as figure 1 As shown, the laser perforated paper is attached to the black silica gel plate by using a mask method, and only the micropores are reserved, and it is placed in an oxygen plasma device for treatment. The treated positio...

Embodiment 2

[0034] (1) Preparation of structural color ink

[0035] Take 100 μL of an aqueous solution containing 80% silica colloidal particles, dissolve 10% acrylamide and 1% N,N methylenebisacrylamide in the above solution, and fill it into the first syringe after completely dissolving; 5% light Initiator 2959 was dissolved in 100 μL of water, and filled into the second syringe after it was completely dissolved. The aqueous solution of the two syringes was injected into the 3D printing nozzle through the ink supply device, and the structural color ink was obtained by mixing.

[0036] (2) Preparation of hydrophobic-hydrophilic patterned printing substrate

[0037] The patterned micropores are directly printed on the black silica gel plate by laser etching, the sample is placed in an oxygen plasma device for treatment, and the surface film is torn off to obtain a hydrophobic-hydrophilic patterned printing substrate.

[0038] (3) Preparation of structural color material patterning

[00...

Embodiment 3

[0041] (1) Preparation of structural color ink

[0042] Take 100 μL of an aqueous solution containing 0.01% polymethyl methacrylate colloidal particles, dissolve 5% phenylboronic acid-modified hyperbranched polyethylene glycol diacrylate, 10% acrylamide, and 1% polyvinyl alcohol in the above mixed solution , adjust the pH of the mixture to 8 and put it into the first syringe; dissolve 5% photoinitiator in 100 μL of water, put it into the second syringe after it is completely dissolved, and inject the aqueous solution of the two syringes into the 3D printing nozzle through the ink supply device Inside, the structural color ink is obtained by mixing.

[0043] (2) Preparation of hydrophobic-hydrophilic patterned printing substrate

[0044] Use the mask method to attach the laser-perforated paper to the silica gel plate, leaving only the micropores, and put it into oxygen plasma for treatment. The treated part is hydrophilic, and the untreated part is hydrophobic. Remove the pape...

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Abstract

The invention discloses a method for preparing a structural color three-dimensional array pattern based on fixed liquid droplets, mainly combining multi-axis manipulator positioning and an automatic continuous ink supply system, adopting colloid particle assembly and gel curing methods in hydrophilic-hydrophobic patterning A three-dimensional structured color array pattern with controllable morphology and adjustable layer number is deposited on the substrate. The method can realize the formation of fixed liquid droplets, ensure the uniform distribution of printing ink on the substrate, and at the same time, the liquid droplets can be deposited multiple times in the vertical direction to realize the construction of a multi-layer structure. The method for preparing the structural color three-dimensional array pattern proposed by the present invention has the advantages of simple process, arbitrary design of microarray pixel point shape, strong pattern adjustability, uniform color, and good repeatability. At the same time, using multiple colloidal inks in parallel can not only Realize colorful pattern display, also can realize the construction of the optical coding array with multi-layer structure.

Description

technical field [0001] The invention relates to a method for patterning a structural color material, in particular to a method for preparing a three-dimensional array pattern of structural color based on fixed liquid droplets. Background technique [0002] Different from chemical colors such as dyes and pigments, physical color, also known as structural color, is the color produced by the ordered micro-nano structure of the material after scattering, diffracting or interfering with light of different wavelengths. It has high brightness, high saturation, and permanent color. With the advantages of non-fading and other advantages, it has broad application prospects in the fields of sensing, display and anti-counterfeiting labels. Among them, the preparation of opal structure or one-dimensional structure photonic crystal by self-assembly of colloidal particles is a relatively economical method for the preparation of structural color materials. [0003] In recent years, various...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/135B29C64/245B29C64/209B29C64/336B29C64/227B29C64/314B29C64/364B29C64/393B29C64/379B29C64/40B33Y10/00B33Y30/00B33Y40/00B33Y40/10B33Y40/20B33Y50/02B33Y70/10C09D11/03C09D11/101C09D11/102C09D11/14C09D11/107
CPCB29C64/135B29C64/245B29C64/209B29C64/336B29C64/227B29C64/314B29C64/364B29C64/393B29C64/379B29C64/40B33Y10/00B33Y30/00B33Y40/00B33Y40/10B33Y40/20B33Y50/02C09D11/03C09D11/101C09D11/102C09D11/14C09D11/107
Inventor 余子夷钦义鹏张静姜超汤保
Owner 南京宇源新能碳中和科技有限公司
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