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Optimized and passive micromixer of asymmetrical wall surface structure

A micro-mixer, asymmetric technology, applied in mixers, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as difficult to process microfluidic chips, difficulties in active micro-mixers, and complex mixer components. , to achieve the effect of easy mass production, configuration and assembly, little influence of experimental environment interference, and simple structure

Pending Publication Date: 2018-02-02
HAINAN UNIVERSITY
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Problems solved by technology

[0003] The mixing behavior of active micromixers is to disturb the flow field distribution by loading external sources to achieve better mixing effects. The composition of the mixer is relatively complex and diverse, and it is difficult to be processed on a microfluidic chip at a microscale. That is to say, the manufacturing process of the active micromixer will have greater difficulties to overcome

Method used

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  • Optimized and passive micromixer of asymmetrical wall surface structure
  • Optimized and passive micromixer of asymmetrical wall surface structure
  • Optimized and passive micromixer of asymmetrical wall surface structure

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Embodiment Construction

[0015] The present invention researches and designs a kind of optimized passive asymmetrical wall structure micro-mixer, this micro-mixer adopts PDMS as material, makes SU8 mold through process steps such as photolithography, developing; Then the PDMS material mixed with curing agent Apply on the mold, heat and cure and release the PDMS negative mold; then apply the PDMS material mixed with the curing agent on the PC sheet, heat and cure it, and then release the mold to obtain a PDMS flat plate; the PDMS negative mold is bonded to the flat plate The obtained microstructure can obtain the passive asymmetric wall structure micromixer.

[0016] The passive asymmetric wall structure micro-mixer model was established using open source finite element software, and the high-efficiency performance of the mixer for reagent mixing was further confirmed through numerical calculations.

[0017] In the micro-mixer, two fluids flow in from the inlet at the same time. In the initial straight...

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Abstract

The invention belongs to the field of micro-fluidic chips, and particularly discloses an optimized and passive micromixer of an asymmetrical wall surface structure. The micromixer is mainly composed of an inlet pipe, a first lateral flow pipeline, a rectangular main flow channel, a second lateral flow pipeline and an outlet pipe, an optimized pipeline structure of a passive mixer is utilized to make fluid units in the mixer generate multi-disturbance and secondary flow perpendicular to the main-flow cross section, the contact area of fluids is effectively increased through eddy, the mixing time is shortened, and the mixing efficiency is improved.

Description

technical field [0001] The patent of the present invention relates to an optimized passive asymmetric wall structure micro-mixer, and the mixing mode of the mixer is passive. Background technique [0002] Microfluidic chips with good application prospects are in rapid development. Due to the higher precision and wider application requirements of lab-on-a-chip (LOC), microfluidic systems are gradually combined with bioengineering and chemical experiments to pursue more efficient use of characteristics, such as reagent rooms Mixing analysis of chemicals, reactions of chemical agents, separation between substances, etc. As the core component of the microfluidic system, an exquisitely designed micromixer chip can concentrate two or more reagents in the micropipe for reaction analysis. The key point of mixing in the mixer is to prolong the mixing time and increase the mixing distance. According to some research work of other scholars, micromixers can be divided into the followi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/00
CPCB01F33/30
Inventor 周腾王瀚林史留勇葛鉴吉祥袁成宇
Owner HAINAN UNIVERSITY
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