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Interdigital electrode chip

A technology of interdigitated electrodes and chips, which is applied in the field of microchannels, can solve the problems of inflexible detection positions, high cost of online detection technology, and limited detection objects of detection methods, and achieve the effects of improving chemical reaction efficiency and improving process conditions

Inactive Publication Date: 2019-12-31
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an interdigitated electrode chip, aiming at the high cost of the existing online detection technology in the market, the inflexibility of the detection position and the difficulty in monitoring the dynamic process of the multi-region chemical synthesis process in the flow chemical microchannel reaction process , and the defects of detection methods in the academic field such as limited detection objects, a flow chemical microchannel reaction online detection technology based on interdigitated electrode chips is proposed

Method used

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Examples

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Effect test

Embodiment 1

[0038] In Example 1, the interdigitated electrode chip can be connected to any position of the channel or pipeline (except the reaction module) of the microchannel reactor, and the online real-time monitoring of the chemical reaction process can be realized.

[0039] In Embodiment 2, the detection accuracy of the interdigital electrodes is improved by changing the material and structure of the interdigital electrode blocks. In this embodiment, the base of the interdigitated electrode block is made of single crystal silicon, and silicon dioxide is grown on the silicon surface with a thickness of 300nm. The interdigital electrode layers are chromium and gold in order from bottom to top, and the thicknesses are 10nm and 100nm respectively. The interdigitated electrode pairs have a line width of 30 μm, a finger length of 6.3 mm, and a line spacing of 30 μm, and there are 60 interdigitated electrode pairs in total.

Embodiment 2

[0040] The use temperature range of the interdigitated electrode block in Example 2 is -150-500° C., and the applicable temperature range is wider.

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Abstract

The invention discloses an interdigital electrode chip. The interdigital electrode chip comprises a base, an interdigital electrode block, a channel layer and a cover glass layer; an interdigital electrode block placing groove is formed in the base, and the interdigital electrode block is matched with the interdigital electrode block placing groove in shape; after the interdigital electrode blockis put into the interdigital electrode block placing groove, the upper surface of the interdigital electrode block is flushed with the upper surface of the base; the interdigital electrode block comprises a substrate and an interdigital electrode layer arranged on the substrate; and the interdigital electrode layer comprises a first electrode and a second electrode. The interdigital electrode chipdisclosed by the invention has the beneficial effects that the interdigital electrode chip is used for realizing online detection on reactants in a flow chemical microchannel reaction and can be accessed to any position of a reaction channel and detection and monitoring on dynamic changing processes of reactant concentrations and reactive states of multiple regions in a reaction process are realized.

Description

technical field [0001] The invention relates to the field of microchannels, in particular to an interdigital electrode chip. Background technique [0002] Flow chemistry is a chemical reaction carried out in a continuously flowing fluid, which is a new direction in the current chemical industry and chemical synthesis research field. Compared with the traditional chemical synthesis process, flow chemical synthesis makes the batch chemical reaction process continuous, so as to greatly reduce the volume of the reactor and improve the efficiency and safety of chemical synthesis. The basis for implementing flow chemistry is microreaction technology, which pumps reactants into a mixing device and then flows into temperature-controlled pipes, tubes, or microstructured reactors until the reaction is complete. During the reaction process, real-time quantitative or qualitative detection of changes in reactant composition or concentration plays a vital role in optimizing chemical reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30B01J19/00
CPCB01J19/0093B01J2219/00853G01N27/26G01N27/30
Inventor 李恭新刘飞陈珺
Owner JIANGNAN UNIV
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