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Submicron-level optical microreactor and preparation method thereof

A micro-reactor, sub-micron technology, applied in the field of materials, can solve the problems of insufficient success rate, complicated modification steps, etc., and achieve the effect of high success rate, simple operation, and widening application prospects.

Active Publication Date: 2019-06-18
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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  • Submicron-level optical microreactor and preparation method thereof
  • Submicron-level optical microreactor and preparation method thereof
  • Submicron-level optical microreactor and preparation method thereof

Examples

Experimental program
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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

The invention relates to a submicron-level optical microreactor and a preparation method thereof and belongs to the technical field of materials. According to the submicron-level optical microreactorand the preparation method thereof of the invention, etching time or conditions are controlled, so that metal types of vapor deposition can be adjusted; by means of a liquid phase production method, submicron-level inverted hollow cone array structures with different cavity sizes and of different material types can be obtained; on the basis of the specific parameters of the obtained structures, with the aid of theoretical calculation software, suitable light source conditions can be obtained, so that the plasmon resonance enhancement fields of the structures can be confined inside corresponding cavities, and the enhancement fields are utilized to achieve gain and confine chemical reactions, and therefore, the optical microreactor can be realized; the inverted hollow cones are in point contact with a substrate, so that the inverted hollow cones can be of self-supporting structures, which means that the optical effects of the inverted hollow cones are not affected by the substrate, and therefore, the application scenario of the submicron-level optical microreactor will be greatly extended, and a foundation can be laid for 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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IPC IPC(8): G01N21/17G01N21/03B81C1/00B82Y40/00
Inventor 张刚王增瑶
Owner JILIN UNIV