Microfluidic chip, its driving method, and analysis device

Abstract

The invention discloses a microfluidic chip, a driving method thereof, and an analysis device. It includes: a first substrate and a second substrate arranged oppositely; the first substrate includes: a first substrate, a first electrode layer, a second electrode layer, and a hydrophobic layer arranged on the side of the first substrate close to the second substrate; the hydrophobic layer The layer is located on a side surface of the first substrate close to the second substrate; the second substrate includes: a second substrate, a third electrode disposed on the side of the second substrate close to the first substrate; wherein the first electrode layer includes a plurality of The first electrode block, the second electrode layer includes a plurality of second electrode blocks; the orthographic projections of the first electrode block and the second electrode block on the first substrate are staggered along the first direction and do not overlap each other, and are perpendicular to the first electrode block. In the direction of the plane of a substrate, the third electrode projection covers the second electrode block. Compared with the prior art, the traveling speed of the droplet can be accelerated, which is beneficial to reduce the power consumption of the microfluidic chip and improve the problem of droplet deformation.

Description

technical field [0001] The invention relates to the technical field of microfluidics, and more particularly, to a microfluidic chip, a driving method thereof, and an analysis device. Background technique [0002] Microfluidics is the science and technology involved in systems that process or manipulate tiny fluids using micro-analytical devices, and is an emerging interdisciplinary science involving chemistry, fluid physics, microelectronics, new materials, and biomedical engineering. Microfluidic chips have played an extremely important role in the development of microfluidic technology. Due to the characteristics of 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 the fields of chemical synthesis, biomedicine, environmental monitoring, etc. [0003] In the prior art, please refer to figure 1 As shown in th...

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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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