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Preparation method and application of responsive structural color micro-pipeline

A structural color and micro-pipe technology, applied in chemical instruments and methods, laboratory containers, laboratory utensils, etc., can solve the problems of lack of multi-parameter comprehensive control, real-time reporting, etc., to achieve multi-parameter controllable, real-time Self-reported, easy-to-operate results

Active Publication Date: 2021-12-31
NANJING DRUM TOWER HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a method for preparing a responsive structural color micro-channel to solve the shortcomings of traditional micro-fluidic devices that lack comprehensive control of multiple parameters and cannot report in real time;

Method used

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  • Preparation method and application of responsive structural color micro-pipeline

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Embodiment 1

[0033] An embodiment of the present invention provides a responsive structural color micropipe, the preparation method of which comprises the following steps:

[0034] S1. Preparation of tubular colloidal crystal template:

[0035] The silica particles with different particle sizes (200nm~300nm) were centrifuged and washed several times, and after the last centrifugation, 100% alcohol was added to disperse them evenly, and the silica alcohol dispersion (concentration: 2wt%) was prepared; the capillary (inner diameter 1.4mm) was ultrasonically cleaned and dried, then inserted into a glass bottle containing a silica alcohol dispersion for deposition (at a temperature of 40°C), and a tubular colloidal crystal template was obtained after 2 days, as shown in the electron microscope figure 2 shown.

[0036] S2. Pre-configuration of hydrogel polymer solution:

[0037] Configure the hydrogel pre-polymerization solution, the hydrogel pre-polymerization solution contains 2mg / mL graph...

Embodiment 2

[0041] An embodiment of the present invention provides a responsive structural color micropipe, the preparation method of which comprises the following steps:

[0042] S1. Preparation of tubular colloidal crystal template:

[0043]The silica particles with different particle sizes (200nm~300nm) were centrifuged and washed several times, and after the last centrifugation, 100% alcohol was added to disperse them evenly, and the silica alcohol dispersion (concentration: 2wt%) was prepared; the capillary After ultrasonic cleaning and drying, insert into a glass bottle containing silica alcohol dispersion for deposition (at a temperature of 40°C), and obtain a tubular colloidal crystal template after 2 days.

[0044] S2. Pre-configuration of hydrogel polymer solution:

[0045] Configure the pre-hydrogel polymer solution, the hydrogel pre-polymer solution contains 2mg / mL graphene oxide, 15wt% N-isopropylacrylamide and 0.5wt% N, N'-methylenebisacrylamide . After passing the pre-hy...

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Abstract

The invention provides a preparation method and application of a responsive structural color micro-pipeline. According to the method, a vertical deposition method is utilized to obtain a tubular colloidal crystal template; a glass rod is inserted into the tubular colloidal crystal template; a hydrogel pre-polymerization solution is injected into a gap between the tubular colloidal crystal template and the glass rod; the template is removed after the solution is solidified, and the responsive structural color micro-pipeline is obtained after reduction reaction. The responsive structural color micro-pipeline prepared by the method of the invention can generate shape change under certain stimulation, can be applied to a microfluidic system, is used for controlling the flow speed and the flow direction of fluid, inherits a periodic microstructure of the colloidal crystal template, has intuitive structural color change during deformation, and provides a real-time visual sensing analysis function. The structural color micro-pipeline based on the responsive hydrogel has the advantages of being simple in preparation method, convenient to operate, low in production cost and the like, and is high in practicability.

Description

technical field [0001] The invention belongs to the technical field of biomaterials, and in particular relates to a preparation method and application of a responsive structural color microchannel. Background technique [0002] In microfluidic systems, various functions can be realized by controlling the flow rate or direction of fluid. Commonly used control methods are to use external drivers or channel valves such as magnetic valves, electric valves, piezoelectric valves, pneumatic valves, and thermal valves. Stimuli-responsive hydrogels have also been developed to design smart valves. When the hydrogel is immobilized in the microfluidic channel, the volume of the hydrogel can be changed by a certain stimulus to control the channel size and channel switch. Compared with other valves, the control method is simple and repeatable. [0003] Traditional stimuli-responsive hydrogel microvalves are used in microfluidic systems, which can only control the fluid flow rate or flow...

Claims

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Application Information

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IPC IPC(8): B01L3/00C08J3/075C08F120/54C08K3/04C08L33/24C08F220/54C08F222/38
CPCB01L3/5027C08J3/075C08F120/54C08K3/042C08F220/54C08J2333/24B01L2200/12C08F222/385
Inventor 赵远锦商逸璇杨玉志张大淦王月桐
Owner NANJING DRUM TOWER HOSPITAL
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