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Updated: Aug 1, 2025

Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
Published on: December 18, 2018
Design and construction of a Laplace and wettability gradient field for efficient water collection
Qiuyue Wang1, Fuchao Yang1,2, Zhiguang Guo1,3
1Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China. yfc@hubu.edu.cn.
Abstract:
A hydrophilic-hydrophobic hybrid surface with a vein-like pattern was prepared on a copper substrate using 3D printing technology and laser scanning technology. Under the action of the Laplace pressure gradient and wettability gradient, the superhydrophilic (SHL) vein-like pattern on the superhydrophobic (SHB) surface aided the directional transport of water droplets. The presented scheme combined with the wettability and surface pattern could achieve a water-collection efficiency of 4258.59 mg cm-2 h-1.
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