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Microfluidic chip electrode for electrochemical detection and method for manufacturing microfluidic chip

A microfluidic chip and manufacturing method technology, applied in the direction of material electrochemical variables, etc., can solve the problems of complex electroplating process, difficulty in popularization, and complicated etching process, etc., and achieve the effect of simple manufacturing method, fast time, and easy electrode shape

Inactive Publication Date: 2006-09-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method of integrating the working electrode is mostly to plate a thin layer of precious metal on the chip substrate. The electroplating process is very complicated, and sometimes it needs the support of a spraying machine, so it is difficult to popularize.
Now there is a method of etching electrodes on conductive glass, but the etching process is still too complicated. For example, photoresists, glue dispensers and other chemicals and equipment are used in the electrode etching process, and ultraviolet lithography is used to etch. electrode

Method used

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  • Microfluidic chip electrode for electrochemical detection and method for manufacturing microfluidic chip
  • Microfluidic chip electrode for electrochemical detection and method for manufacturing microfluidic chip
  • Microfluidic chip electrode for electrochemical detection and method for manufacturing microfluidic chip

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Embodiment Construction

[0016] exist figure 1 , take a piece of cut conductive glass, let the side with ITO conductive film face up ( figure 1 ), paint the rectangle 1 with Vaseline at one corner of the glass, this position is protected by Vaseline, after the etching is completed, it will be the position of the electrode connecting sheet 4 ( figure 2 ). Take a metal strip 2 coated with vaseline on the surface, and place it in the middle of the rectangular vaseline. In addition to the rectangular vaseline part, the part where the conductive glass contacts the metal strip is also protected by the vaseline ( image 3 ). Soak the conductive glass with metal strips in 5mol / L hydrochloric acid solution for 30 minutes ( Figure 4 ). After taking out the glass piece, remove the metal strip, wipe off the vaseline on the glass piece, wash the glass surface with absolute ethanol and secondary water, and the ITO working electrode 3 and the electrode connecting piece 4 have just been integrated on the glass ...

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Abstract

This invention relates to a microfluidic chip electrode for electrochemical detection and method for manufacturing microfluidic chip, which comprises the following steps: (1) coating sheet vaseline layer on position of detection electrode joining piece on conductive film of the glass, cutting metal strip with width as the electrode, and putting the strip with vaseline on its bottom on former position of detection electrode joining piece; (2) putting the glass into HCl solution to etch and remove the metal strip; (3) clearing the vaseline coating. This invention is convenient and low cost.

Description

technical field [0001] The invention relates to a microfluidic chip electrode for electrochemical detection and a manufacturing method of the microfluidic chip. Background technique [0002] At present, the electrodes used in the electrochemical detection of microfluidic chips are mostly carbon fiber electrodes, sheet electrodes and noble metal electrodes, etc. The outlet positions of the electrodes and chip capillaries are not fixed, so the reproducibility of the sample detection current in the experiment is not good. . In order to solve the reproducibility problem in the electrochemical detection chip, many schemes of integrated electrodes have been proposed. The integrated electrodes have the characteristics of fixed relative positions, so the reproducibility is high. However, the way of integrating the working electrode is mostly to plate a thin layer of precious metal on the substrate of the chip. The electroplating process is very complicated, and sometimes it needs t...

Claims

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Application Information

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IPC IPC(8): G01N27/30
Inventor 陈国南王伟许雪琴
Owner FUZHOU UNIV
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