Microfluid valve gear based on electrowetting technology

Abstract

The invention discloses a microfluid valve gear based on electrowetting technology. The microfluid valve gear comprises an upper substrate, a lower substrate and a microfluid interlayer. The microfluid interlayer is positioned between the upper substrate and the lower substrate. An upper conducting layer (13) and a lower conducting layer (14) are respectively arranged on one side of the upper substrate (11) and the lower substrate (12) close to the microfluid interlayer (10), an upper dewatering dielectric layer (15) is arranged on a lower surface of the upper conducting layer (13), and a lower dewatering dielectric layer (16) is arranged on an upper surface of the lower conducting layer (14). The microfluid interlayer (10) is made of porous spongy material. The outer surface and the interior structure surface of the microfulid interlayer (10) are both covered by a medium dewatering dielectric layer (17). Voltage is applied between the microfluid interlayer and a certain substrate, so that waterborne fluid between the substrate and the interlayer is filtered to the other side of the interlayer by the aid of electrowetting property. Correspondingly, voltage is applied between the other substrate and the interlayer, so that the waterborne fluid can be filtered back to the original side, and accordingly a dynamic and adjustable fluid valve function can be achieved.

Description

technical field [0001] The invention relates to a microfluidic valve device, in particular to a microfluidic valve device based on ultralight graphene. Background technique [0002] Electrowetting technology is a new type of microfluidic technology that has been widely used and researched in recent years. It has the characteristics of low power consumption, fast response speed, simple device structure, and small size. The new microfluidic valve based on electrowetting technology also has the advantages of reliable action, fast response and easy continuous control, and has excellent application value. However, the current main electrowetting microfluidic valves rely on micromechanical and electronic processes, have relatively complex and precise micromechanical structures, and complex processing techniques, especially when it comes to the manipulation of multiphase fluids, the filtration, barrier and recovery of specific fluids Operation is the main problem currently facing....

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Problems solved by technology

However, the current main electrowetting microfluidic valves rely on micromechanical and electronic processes, have relatively complex and precise micromechanical structures, and complex ...

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