作者：Shuli Wang, Nianzuo Yu, Tieqiang Wang, Peng Ge, Shunsheng Ye, Peihong Xue, Wendong Liu, Huaizhon
关键字：micro?uidics, surface patterning, anisotropic wetting, ?uid control, gas?liquid separation
论文来源：期刊
具体来源：ACS Appl. Mater. Interfaces
发表时间：2016年
v

This article shows morphology-patterned stripes as a new platform for

directing ?ow guidance of the ?uid in micro?uidic devices. Anisotropic (even

unidirectional) spreading behavior due to anisotropic wetting of the underlying surface

is observed after integrating morphology-patterned stripes with a Y-shaped microchannel.

The anisotropic wetting ?ow of the ?uid is in?uenced by the applied pressure, dimensions

of the patterns, including the period and depth of the structure, and size of the channels.

Fluids with di?erent surface tensions show di?erent ?owing anisotropy in our

microdevice. Moreover, the morphology-patterned surfaces could be used as a

microvalve, and gas?water separation in the microchannel was realized using the

unidirectional ?ow of water. Therefore, bene?ting from their good performance and

simple fabrication process, morphology-patterned surfaces are good candidates to be applied in controlling the ?uid behavior in

micro?uidics.