Design method and application of three-dimensional porous inclined array structure for directional transportation of liquid

Abstract

The invention provides a design method and application of a three-dimensional porous inclined array structure for directional transportation of liquid, and belongs to the field of microfluidics. According to the design scheme, a micron-sized porous structure is applied to the field of microfluidics and is combined with a traditional liquid directional transportation inclined array structure. The micron-sized porous structure can adopt various hole shapes, such as a triangle, a rectangle, a hexagon, a circle or other patterns. Meanwhile, the micron-sized porous structure can be suitable for various inclined array structures, on the premise that the transportation characteristics of an original structure are guaranteed, the transportation position and speed of liquid in a three-dimensional space can be adjusted and controlled, and controllable transportation of the liquid in the vertical direction and the horizontal direction is achieved. Compared with a traditional mesh-free array structure, the micron-sized porous structure is adopted, and liquid diffusion inside the structure is achieved on the premise that liquid diffusion outside the structure is guaranteed. Meanwhile, the micron-sized porous inclined array structure can be suitable for various materials. Therefore, by utilizing the characteristic, the design scheme enables the liquid directional transportation structure characteristic, the processing scheme and the application environment to be more flexible.

Description

technical field [0001] The invention belongs to the field of microfluidics, and relates to a design method and application of a three-dimensional porous tilted array structure that applies a micrometer-level porous structure to the field of microfluidics and combines with a traditional tilted array structure to realize liquid directional transport. Background technique [0002] Spontaneous directional transport of liquids on solid surfaces widely exists in natural systems and engineering practices, and has broad application prospects in the fields of microfluidics, water harvesting, condensation heat transfer, and interface rent reduction. The study found that there are various surfaces in nature with spontaneous directional transport of liquids, such as the back of desert beetles, spider silk, butterfly wings, cacti, bird beaks and pitcher plants. Inspired by it, researchers have proposed several methods for directional transport of liquids, including wettability gradients,...

AI Technical Summary

Problems solved by technology

For one-dimensional liquid directional transport, only one trend of the liquid during the transport process can be guaranteed, and the diffusion of the remaining two dimensions of the liquid cannot be controlled

For two-dimensional liquid directional transport, it is possible to achieve longitudinal liquid directional transport while controlling liquid lateral diffusion, but it cannot control liquid diffusion in the direction perpendicular to the substrate

One-dimensional and two-dimensional liquid directional transport has the problem of being unable to precisely control the position and velocity of liquid directional transport, which greatly limits its application range

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