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Single-sided two-dimensional driving digital microfluidic chip based on electrowetting

A digital microfluidic and electrowetting technology, used in laboratory containers, laboratory utensils, chemical instruments and methods, etc., can solve the problem of doubling the complexity of the driving circuit, and the driving ability is not as good as the single-sided grounding of the upper plate. structure and other issues, to achieve the effect of high throughput and parallel control capability, simple control, and good degree of freedom

Inactive Publication Date: 2012-06-20
FUDAN UNIV
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  • Abstract
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Problems solved by technology

This single-sided structure chip has a good application prospect, but the chips proposed based on this structure currently use discrete driving electrodes, that is, each electrode is made into a separate single shape to serve as a driving electrode or a ground electrode. The complexity of the driving circuit of the structure multiplies as the number of electrodes increases, and its driving ability is not as good as that of a single-sided structure with the upper plate grounded. More importantly, it can only achieve one-dimensional driving at present.

Method used

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  • Single-sided two-dimensional driving digital microfluidic chip based on electrowetting
  • Single-sided two-dimensional driving digital microfluidic chip based on electrowetting
  • Single-sided two-dimensional driving digital microfluidic chip based on electrowetting

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Embodiment Construction

[0025] The chip structure of the present invention is as figure 1 (A), figure 1 As shown in (B), there are first electrode layers (driving electrodes) E7-E12 on the substrate 101. It should be noted that the material used as the substrate is not fixed, as long as it is insulated, such as quartz, glass, insulated silicon wafer, etc.; and the electrode (including the ground electrode described below) can be composed of any material, and the electrode shape is For the above-mentioned "strip shape", the size and spacing of the electrodes and the number of specific electrodes are not limited. This specification only takes a certain number and specifications of electrodes as an example. There is a first dielectric layer 102A on the first electrode layer, and second electrode layers E1-E6 are arranged on it; and a second dielectric layer 102B is arranged on the second electrode layer E1-E6. In each electrode layer, all the individual electrodes are arranged in parallel; the second ele...

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Abstract

The invention belongs to the digital microfluidic technical field and particularly relates to a single-sided two-dimensional driving digital microfluidic chip based on electrowetting. The chip is of the single-sided electrode plate structure, strip driving electrodes and a strip ground electrode are integrated on the same single-sided electrode plate, the ground electrode can be integrated on the driving electrodes or in the electrode gap of the driving electrodes, liquid drops are driven on the monopolar plate, the upper electrode plate is not essential and the real single-sided two-dimensional driving chip is realized. By adopting the single-sided two-dimensional driving digital microfluidic chip based on electrowetting, the drive performance and functional integration of the microfluidic chip can be greatly increased and the application range of the digital microfluidic field can be amplified.

Description

technical field [0001] The invention belongs to the technical field of digital microfluidics, and in particular relates to a single-sided two-dimensional drive digital microfluidics chip. Background technique [0002] As an important part of laboratory-on-a-chip (LOC) automation control, microfluidic chip technology has been developing continuously. Chips based on various driving methods and structures have appeared, and digital microfluidic based on electrowetting effect Due to many advantages such as simple driving method, strong driving force, convenient operation and high degree of automation, the chip has a very good development prospect in the field of LOC. [0003] Traditional digital microfluidic chips based on electrowetting effect can be divided into single-side driving structure and double-side driving structure from the structure. The double-sided drive structure means that the droplet is placed between the upper and lower electrode plates. Both electrode plates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/00
Inventor 陈建锋李嘉周嘉
Owner FUDAN UNIV
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