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Digital micro-current chip electrode configuration for single drop transportation

A digital microfluidic, chip electrode technology, applied in chemical instruments and methods, laboratory containers, laboratory utensils, etc., can solve the problems of increasing the cost and complexity of chips, and achieve reduction in the number of electrodes, reliable driving, and simplification. The effect of the control system

Inactive Publication Date: 2014-09-03
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are also some chips that can integrate the droplet position detection function, it greatly increases the cost and complexity of the chip

Method used

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  • Digital micro-current chip electrode configuration for single drop transportation
  • Digital micro-current chip electrode configuration for single drop transportation

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Embodiment Construction

[0027] The electrode configuration of the digital microfluidic chip for unidirectional droplet transport provided by the present invention can have various specific chip implementation methods. This embodiment only lists a common chip structure to illustrate its implementation principle. It should be noted that this embodiment is provided for illustrative purposes and is not intended to limit the scope of the present invention in any way.

[0028] A digital microfluidic chip electrode configuration for unidirectional droplet transport based on the present invention is as follows: figure 1 As shown, E1-E4 are the asymmetric driving electrodes of the present invention, which are arranged end to end and nested with each other, and the interphase electrodes are electrically connected so that the driving electrode group A and the electrode group B are finally obtained. D is the droplet placed on the electrode, and its size should satisfy that when the droplet is in a stable positio...

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Abstract

The invention belongs to the technical field of digital micro-current control, and particularly relates to digital micro-current chip electrode configuration for single drop transportation. The configuration comprises specific electrode shape configuration and compact electrode connection manner configuration. The drop one-way drive is realized by mutually adhering and nesting electrodes with asymmetrical shapes end to end; and inter-phase electrodes are mutually connected, so that the entire one-way chip can be controlled by only two drive signals. The configuration provided by the invention has the advantages of novel design, strong driving force, simple control, good reliability, strong specificity and high automation degree. Furthermore, the utility function and the application range of the medium electric wetting digital micro-current chip can be greatly widened.

Description

technical field [0001] The invention belongs to the technical field of digital microfluidics, and in particular relates to a chip electrode configuration for one-way liquid droplet transport based on the digital microfluidic technology of electrowetting on a medium. Background technique [0002] Digital microfluidic technology refers to the technology of manipulating a single droplet through multiple driving methods such as heat, voltage, and surface acoustic waves. The digital microfluidic technology based on electrowetting on the medium refers to a technology that changes the contact angle of the droplet on the medium through a voltage signal to achieve droplet actuation. This technology is attracting more and more attention due to its advantages of simple implementation, convenient operation, good controllability and high driving ability, and is considered to be the most promising technology in the field of microfluidics. [0003] The digital microfluidic chip based on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L3/00
Inventor 李嘉陈建锋周嘉
Owner FUDAN UNIV
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