Micro channel electrode and miniflow control analysis chip thereof
A technology of microfluidic analysis and microchannel, applied in the direction of material electrochemical variables, material inspection products, biological testing, etc., can solve the problems of high mask precision requirements, high product scrap rate, high channel alignment technology, etc. , to achieve the effect of low cost, high aspect ratio and simple structure
Inactive Publication Date: 2009-07-08
WUHAN UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.
[0017] The microchannel electrode of the embodiment of the present invention has an electrode in the channel of its base, and it is characterized in that: the electrode in the channel is made of conductive fluid and conductor hole needle, and conductor hole needle is inserted in the conductive fluid; Described conductive fluid is One of the following: liquid electrolytes, liquid metals, PDMS prepolymers mixed with conductive substances, and ferrofluids.
[0018] The microfluidic analysis chip of the present invention has a fluid channel in the chip, and two parallel electrode channels beside the fluid channel are characterized in that: the electrodes in the channel are composed of conductive fluid and conductor holes, and the conductor holes In the conductive fluid: liquid electrolyte, liquid metal, PDMS prepolymer mixed with conductive substances...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| width | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
A micro-channel electrode has electrodes in the channels of its base, and is characterized in that: the electrodes in the channel are composed of conductive fluid and conductor pins, and the conductor pins are inserted in the conductive fluid. The microchannel electrode and microfluidic analysis chip of the present invention are simple in structure, easy to manufacture, and low in cost, and have a high aspect ratio, and a uniform strong electric field of more than 100kV / cm, which is suitable for making microfluidic devices that require a large area of uniform electric field. Analysis chip. Different conductive liquids are injected into the channels of the substrate to form electrodes with various precision and different response speeds that can be integrated into the microchannels.
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; at the same time, the strong electric field provided by the electrode can be used to separate different electrical particles, As well as cell perforation experiments, etc., 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 manufacturing method is to use the traditional photolithography process to ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N33/50
Inventor 赵兴中刘侃丁会江
Owner WUHAN UNIV