Method for forming multi-layer liquid droplet wrapping

Abstract

The invention discloses a method for forming multi-layer liquid droplet wrapping. The method comprises the following steps: respectively putting multiple mediums into micro channels correspondingly, and adjusting the distance between the outlet of each micro channel and a first surface of a glass substrate; driving the glass substrate to move in a preset direction; conveying the mediums towards the first surface, and smearing the mediums on the first surface to form a medium layer; when the glass substrate is moved to a preset position, and at a preset moment, supplying a vertical incident laser beam towards a second surface of the glass substrate from a preset incidence position till the laser beam pushes the medium layer close to the first surface to be sequentially embedded into other medium layers and ejected into the air to form multi-layer liquid droplet wrapping, wherein the first surface and the second surface are planes parallel to each other. By adopting the method, precise control on single multi-layer liquid droplet wrapping can be achieved, continuous formation of the multi-layer liquid droplet wrapping can be conveniently achieved, relatively good applicability is achieved, the production efficiency of the multi-layer liquid droplet wrapping is high, and the production cost is low.

Description

technical field [0001] The invention relates to the field of fluid technology, in particular to a method for forming multi-layer droplet wrapping. Background technique [0002] The micro-volume droplet encapsulation technology has great application significance in the fields of biomedical testing, molecular biology, environmental chemistry, food science, cosmetic applications, and engineering applications. [0003] At present, the droplet generation by microfluidic chips is the main droplet generation method. It is used in the above application fields. Based on the droplet, it can manipulate chemical reagents, cells, proteins and other macromolecules and microparticles, and more Precisely control the experimental conditions of each reaction, more flexibly control the actual amount of each component participating in the reaction, and shorten the reaction time. Droplets are a new form of fluid movement that has appeared on microfluidic chips in recent years. Each droplet can ...

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Problems solved by technology

[0005] However, the existing microfluidic chip controls the droplet size by controlling the speed of the dispersed phase, the uniformity of the droplet is low, and it needs to be sorted, it is difficult to accurately control the package of a single droplet, a microfluidic chip Corresponds to only one size droplet

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