Controlling flow behavior of water in microfluidics with a chemically patterned anisotropic wetting surface

Langmuir : the ACS Journal of Surfaces and Colloids
Shuli WangBai Yang

Abstract

We report the flow behavior of water in microfluidic systems based on a chemically patterned anisotropic wetting surface. When water flows inside a microchannel on top of a micropatterned surface with alternating hydrophilic/hydrophobic stripes, it exhibits an anisotropic flowing characteristic owing to the anisotropic wettability; thus, the patterned surface acts as a microvalve for the microfluidic system. The anisotropic flow of water is influenced by the microscale features of the patterns and the dimensions of the microchannels. Furthermore, by reasonably combining the patterned surface and microchannel together, we realize the transportation of water in a microchannel along a "virtual" wall, which is the boundary of the hydrophilic and hydrophobic area. We believe that the chemically patterned surfaces could be an alternative strategy to control the flow behavior of water in microfluidic channels.

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Citations

Sep 24, 2015·Advanced Materials·Antoni Forner-CuencaPierre Boillat
Aug 26, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Chi-Mon ChenShu Yang
Dec 22, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Nianzuo YuBai Yang
Jan 21, 2017·ACS Applied Materials & Interfaces·Pengfei ZhangLei Jiang
Aug 15, 2018·Lab on a Chip·Sei Hyun YangYoung Seok Song
May 4, 2017·Chemical Society Reviews·Jiale YongXun Hou
Jun 5, 2018·Inorganic Chemistry·Arvin KakekhaniJens K Nørskov
Oct 2, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Liang HeWenyan Liang
Nov 23, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Jun Han ParkAhmad Jabbarzadeh

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