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Enhancement Mechanism of Fish-Scale Surface Texture on Flow Switching and Mixing Efficiency in Microfluidic Chips

Lookup NU author(s): Dr Dehong Huo

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Abstract

Surface textures have a significant influence on surface-functional properties, which provide an alternative solution to create an accurate control of microfluidics flow. This paper studies the modulation ability of fish-scale surface textures on microfluidics flowing behavior on the ground of the early research on vibration machining-induced surface wettability variation. A microfluidic directional flow function is proposed by modifying the wall of the microchannel at the T-junction with different surface textures. The retention force caused by the surface tension difference between the two outlets in the T-junction is studied. In order to investigate the influence of fish-scale textures on the performance of the directional flowing valve and micromixer, T-shaped and Y-shaped microfluidic chips were fabricated. The experimental results indicated that with the aid of the fish-scale surface textures generated by vibration-assisted micromilling, directional liquid flow can be achieved at a specific input pressure range and the mixing efficiency of microfluidics can be improved dramatically.

Publication metadata

Author(s): Zheng L, Fang M, Chen W, Huo D, Li H

Publication type: Article

Publication status: Published

Journal: Langmuir

Year: 2023

Volume: 39

Issue: 21

Pages: 7396-7407

Print publication date: 30/05/2023

Online publication date: 15/05/2023

Acceptance date: 29/04/2023

Date deposited: 05/07/2023

ISSN (print): 0743-7463

ISSN (electronic): 1520-5827

Publisher: American Chemical Society

URL: https://doi.org/10.1021/acs.langmuir.3c00502

DOI: 10.1021/acs.langmuir.3c00502

ePrints DOI: 10.57711/wwrp-5y28

PubMed id: 37186955

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