Two-dimensional digital micro-fluidic chip based on one-way liquid drop transport

Abstract

The invention belongs to the technical field of digital microfluidics and in particular relates to a two-dimensional digital micro-fluidic chip based on one-way liquid drop transport. According to the chip, a single-plane chessboard-shaped liquid drop control unit is formed due to the moon-shaped one-way liquid drop transport electrode, reasonable electrode arrangement and simple control signal configuration, and M*N control units (N can be infinitely great) can be controlled by using 2*M control signals, so that two-dimensional liquid drop drive is realized. The provided digital micro-fluidic chip has the advantages of novel and simple control mode, simple manufacturing process, high driving capacity, high batch processing degree, high throughput operation and the like, the defects of the traditional digital micro-fluidic chip are overcome, and the application functions and application range of the digital micro-fluidic chip are greatly widened.

Description

technical field [0001] The invention belongs to the technical field of digital microfluidics, and in particular relates to a two-dimensional digital microfluidics chip based on one-way transport of liquid droplets. Background technique [0002] Digital microfluidic chip refers to a miniaturized chip that operates on discrete droplets, and is an important part of the automated control of the laboratory on a chip (LOC). The digital microfluidic chip based on the electrowetting effect on the medium mainly includes the driving and grounding electrodes, the dielectric layer, the hydrophobic layer and other parts, and uses the voltage signal to control the droplet, so it has the advantages of simple driving method, strong driving force, and easy control. It has many advantages such as convenience and high degree of automation, and has very good development prospects in the field of LOC. [0003] For the digital microfluidic chip, its batch processing and high throughput are its i...

AI Technical Summary

Problems solved by technology

However, there are currently two types of chip structures for digital microfluidic chips based on the strip electrode structure. One is that two sets of strip electrodes are placed on the lower plate of the chip, which makes the chip difficult to manufacture, complicated to control, and has problems such as easy breakdown; The second is that two sets of strip electrodes are respectively placed on the upper and lower plates. Although this can be effectively controlled, the dual-plane chip with driving electrodes on the upper plate is not easy to integrate with optical detection and other functions, which limits the application range of the chip.

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