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Micro channel electrode and miniflow control analysis chip

A technology of microfluidic analysis and microchannel, which is applied in the direction of material electrochemical variables, material inspection products, biological testing, etc., can solve the problems of high mask precision requirements, high channel alignment technology, and high product scrap rate. Achieve the effect of high aspect ratio, simple structure and easy production

Inactive Publication Date: 2007-05-16
WUHAN UNIV
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Problems solved by technology

The conventional electrode manufacturing method is to use the traditional photolithography process to coat the substrate, and its disadvantages are: (1) high requirements for mask precision, requiring extremely large coating equipment, complex photolithography and coating processes; (2) electrode fabrication After being embedded into the channel, extremely high channel alignment technology is required, and the product scrap rate is high; (3) the thickness of the coating film is generally much smaller than the channel height, and the fluid in the channel is often not in the effective area of ​​the electric field or cannot provide a uniform field The strong distributed electric field has no obvious effect on increasing the field strength and generating three-dimensional field strength

Method used

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  • Micro channel electrode and miniflow control analysis chip
  • Micro channel electrode and miniflow control analysis chip

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Embodiment Construction

[0016] The technical solutions of the present invention will be further described below with reference to specific embodiments.

[0017] The micro-channel electrode of the embodiment of the present invention has an electrode in the channel of the base, and is characterized in that: the electrode in the channel is composed of a conductive fluid and a conductor hole pin, and the conductor hole pin is inserted into the conductive fluid; the conductive fluid is: One of the following: liquid electrolyte, liquid metal, PDMS prepolymer mixed with conductive substances, and magnetic fluid.

[0018] The microfluidic analysis chip of the present invention has a fluid channel in the chip, and two electrode channels in parallel next to the fluid channel are characterized in that: the electrodes in the channel are composed of conductive fluid and conductor holes, and the conductor holes are inserted into the holes. In conductive fluids; liquid electrolytes, liquid metals, PDMS prepolymers ...

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Abstract

This invention relates to micro groove electrode, which has electrode and is characterized by the following: the groove electrode is composed of conductive flow and conductive hole needle inserted into conductive part. This invention is of simple structure and easy for processing with low cost and with even electricity field more than 100KV / cm suitable for processing large area field micro flow control analysis chip.

Description

technical field [0001] The invention relates to a microchannel electrode in a microfluidic analysis chip and a microfluidic analysis chip made of the electrode, belonging to the technical field of microelectromechanical processing; meanwhile, the strong electric field provided by the electrode can be used to separate particles of different electrical properties, It can be used as a powerful tool for biochemical analysis; in addition, this electrode has a uniform large-area field strength, which can be used for material impedance analysis, electric field simulation, etc. Background technique [0002] Electrode fabrication is an essential technology in microfluidic analysis chips, and is an indispensable integrated component for electrical signal detection, protein separation, cell perforation, impedance analysis and other technologies. The conventional electrode fabrication method is to use traditional photolithography process to coat the substrate, which has the following di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N33/50
Inventor 赵兴中刘侃丁会江
Owner WUHAN UNIV
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