Indexed by:期刊论文

Date of Publication:2016-05-01

Journal:MICRO & NANO LETTERS

Included Journals:SCIE、EI

Volume:11

Issue:5

Page Number:269-272

ISSN No.:1750-0443

Key Words:surface tension; drops; water; etching; aluminium; hydrophilicity; hydrophobicity; plasma materials processing; vein like directional transport platform; water droplets; superhydrophobic surface; chemical etching; cold nitrogen plasma jet; superhydrophilic track pattern; wedge angles; surface tension; open aluminium substrate; water recycling; Al; H2O

Abstract:In this work, a way to achieve effective directional transport of water on superhydrophobic surface is presented. An aluminium (Al) superhydrophobic surface was prepared by chemical etching method. After being treated by cold nitrogen plasma jet, a superhydrophilic track pattern corresponding to the mask was then fabricated. The vein-like structure of the liquid transport platform was composed of a trunk and several branches, both having wedge angles. Driven by surface tension, water droplets at any location of the dripping area can be transported against gravity. This method is reusable and could be widely used in the directional transportation and water recycling.