System and method for spontaneously forming and controlling liquid drops

Abstract

The invention discloses a system for spontaneously forming and controlling liquid drops. The system comprises a micro pipeline, a gas releasing part, a water-phase container and an oil-phase container, wherein the gas releasing part is used for releasing a gas in the micro pipeline; the water-phase container is used for containing polar liquid; the oil-phase container is used for containing non-polar liquid; the first end of the micro pipeline can be respectively communicated with outlet ends of the water-phase container and the oil-phase container so as to form a sealed system; the internal air pressure of the system can be increased to be higher than external atmospheric pressure; after the polar liquid and the non-polar liquid are respectively used for blocking communication between the gas in the water-phase container and the oil-phase container and the gas in the micro pipeline, the gas releasing part releases pressure, the pressure in the micro pipeline is enabled to be smaller than the air pressure in the water-phase container and the oil-phase container, and the polar liquid and the non-polar liquid are facilitated to be injected into the micro pipeline under the action of pressure difference. The invention also discloses a method for spontaneously forming and controlling the liquid drops. By applying the system and the method for spontaneously forming and controlling the liquid drops, provided by the invention, external energy is not required for supplying power, the cost is low, the liquid drop forming effect is stable, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of microfluidic technology, more specifically, to a system for the spontaneous formation and control of liquid droplets, and also to a method for the spontaneous formation and control of liquid droplets. Background technique [0002] Micro-droplets are widely used in the fields of chemistry and biomedicine, and the technology of how to generate micro-droplets and effectively control the generation of micro-droplets has been quite mature. [0003] At present, most of the existing micro-droplet formation equipment needs a syringe pump to provide power and use the shearing of the oil phase and the water phase to form droplets, while the control of the droplet size is mostly realized through control valves and complex control systems. The equipment cost High, bulky, not suitable for large-scale promotion. [0004] To sum up, how to effectively solve the problems of complex structure and high cost of the droplet formation...

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Problems solved by technology

[0005] In view of this, the first object of the present invention is to provide a system for spontaneous formation and control of droplets, the structural design of the system for spontaneous formation and control of droplets can effectively solve the problem of complex structure and cost of droplet formation and control high problem, the second object of the present invention is to provide a method for the spontaneous formation and control of droplets

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