Micro-fluidic chip, driving method and analyzing device thereof

Abstract

The invention discloses a micro-fluidic chip, a driving method and an analyzing device thereof. The micro-fluidic chip comprises a first base plate and a second base plate which are oppositely arranged; the first base plate comprises a first substrate, a first electrode layer, a second electrode layer and a hydrophobic layer; the first electrode layer is arranged on one side of the first substrateclose to the second base plate; the hydrophobic layer is located on a lateral surface of the first base plate close to the second base plate; the second base plate comprises a second substrate and athird electrode; the third electrode is arranged on one side of the second substrate close to the first base plate; the first electrode layer comprises a plurality of first electrode blocks; the second electrode layer comprises a plurality of second electrode blocks; orthographic projections of the first electrode blocks and the second electrode blocks on the first substrate are staggered and notoverlapped along a first direction; the projection of the third electrode is covered on the second electrode blocks along a direction vertical to the plane of the first substrate. Compared with the prior art, the micro-fluidic chip is capable of increasing advancing rate of droplets, is beneficial to reduction of power consumption of the micro-fluidic chip and is capable of solving the problem ofdroplet deformation.

Description

technical field [0001] The present invention relates to the field of microfluidic technology, and more specifically, to a microfluidic chip, a driving method thereof, and an analysis device. Background technique [0002] Microfluidics is the science and technology involved in the use of microanalytical devices to process or manipulate tiny fluid systems. It is an emerging interdisciplinary science involving chemistry, fluid physics, microelectronics, new materials and biomedical engineering. Microfluidic chips play an extremely important role in the development of microfluidic technology. Because of their miniaturization, integration and portability, microfluidic chips integrate the functions of sampling, reaction, separation and detection of samples. , has huge development potential and broad application prospects in chemical synthesis, biomedicine, environmental monitoring and other fields [0003] In prior art, please refer to figure 1 As shown, the microfluidic chip pr...

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Problems solved by technology

[0003] In prior art, please refer to figure 1 As shown, the microfluidic chip provided by the prior art includes a substrate 2, an insulating layer 1 and a plurality of electrodes 3, which is a single electrode layer structure, the electric field is weak, and a high voltage drop is required to drive the liquid droplet. Therefore, the existing microfluidic chip The flow control chip has the disadvantages of high energy consumption, high application cost, and small application range.

[0004] In addition, in the specific operation process, when the droplet travels from the original position, the droplet will be slightly deformed every time it travels. This deformation will bring two problems: one is that the deformation will bring the droplet The displacement delay makes it impossible to accurately obtain the position of the droplet through time; the second is that the accumulation of droplet deformation to a certain extent will not be able to completely control its travel through the electrode

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