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A submicron-scale optical microreactor and its preparation method

A micro-reactor and sub-micron technology, applied in the field of materials, can solve the problems of complicated modification steps and insufficient success rate

Active Publication Date: 2021-08-20
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the modification of the surface groups or charges of the nano-microstructure, the specific adsorption of reactants and the confinement reaction in the micro-nano space have also been developed in recent years. [7,8] , but the modification steps are complicated and the success rate is not high enough

Method used

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  • A submicron-scale optical microreactor and its preparation method
  • A submicron-scale optical microreactor and its preparation method
  • A submicron-scale optical microreactor and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the preparation of hydrophilic glass sheet

[0035] Use a glass knife to cut the glass slide to a size of 2 cm long and 1.5 cm wide, then place it in a mixed solution of concentrated sulfuric acid and hydrogen peroxide (volume ratio 7:3), heat it to 80°C in a water bath, and keep it for 5 hours , to obtain a hydrophilic glass sheet; the glass sheet after the hydrophilic treatment was then repeatedly washed with deionized water for about 6 times, and dried with nitrogen to obtain a hydrophilic substrate.

Embodiment 2

[0036] Embodiment 2: the preparation of photoresist film

[0037] Spin-coat the photoresist collagen solution (BP212-37S, forward photoresist, purchased from Beijing Kehua Microelectronics Material Co., Ltd.) on the glass slide treated with hydrophilicity with a desktop homogenizer (rotational speed: 3000rpm, spin-coating time : 30 seconds), then place it in an oven at 88° C. and let it stand for 2 hours, take it out and cool it down to room temperature naturally to obtain a 2 μm thick photoresist film solidified on the glass substrate.

Embodiment 3

[0038] Embodiment 3: Preparation of hydrophobic polystyrene microspheres

[0039] At room temperature, add 4 mL of deionized water to 2 mL of 5 wt % polystyrene microsphere dispersion with a diameter of 700 nm, sonicate at 100% power (100 W) for 20 minutes, then centrifuge at 8900 rpm for 20 minutes, and suck off the upper layer supernatant; add 4mL of deionized water to the polystyrene microsphere precipitate obtained by centrifugation, sonicate for 20 minutes, and centrifuge at 8900rpm for 20 minutes; repeat the above steps to add deionized water, Ultrasound and centrifugation process 6 times; then add 4 mL of deionized water and ethanol mixture with a volume ratio of 1:1 to the polystyrene microsphere precipitate obtained by centrifugation, sonicate for 20 minutes, and then centrifuge at 8900rpm for 20 minutes; Repeat the above process of adding deionized water and ethanol mixture, ultrasonication, and centrifugation to the polystyrene microsphere precipitate obtained by ce...

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Abstract

A submicron optical microreactor and a preparation method thereof belong to the technical field of materials. In the present invention, by controlling the etching time or conditions, adjusting the type of metal deposited in vapor phase, and using the method of liquid phase inversion, we can obtain submicron inverted hollow cone array structures with different cavity sizes and different material types. According to the specific parameters of the obtained structure, with the assistance of theoretical calculation software, we can find the appropriate light source conditions, so that the enhanced plasmon resonance field of the structure is confined inside the cavity, and further use the enhanced field to achieve gain and limit Domain chemical reaction, so as to achieve the effect of optical microreactor. In addition, the point contact between the inverted hollow cone and the substrate makes it a self-supporting structure, which means that its optical effect is not affected by the substrate. Therefore, the application scenarios of this submicron optical microreactor It will be greatly broadened and lay the foundation for its further practical application.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a submicron optical microreactor and a preparation method thereof. Background technique [0002] With the development of modern chemistry, how to improve the utilization rate of substances and improve the precise control of chemical reactions in time or space has become a hot topic [1-3] . Among them, realizing the spatial confinement of chemical reactions in the micro / nano scale has important application value in resource conservation and subsequent functional application of products. Therefore, it is of great practical significance to develop microreactors that can confine traditional chemical reactions in microspaces. [0003] Microreactors, in a sense, generally refer to those devices that can confine the place where chemical reactions occur in a tiny space. Microfluidic devices are currently one of the most common microreactor models [4,5] , The reactants a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17G01N21/03B81C1/00B82Y40/00
Inventor 张刚王增瑶
Owner JILIN UNIV