A hierarchical superaerophilic cone: Robust spontaneous and directional transport of gas bubbles

In this paper, we present a rapid and simple method to fabricate superaerophilic polytetrafluoroethylene cones via a two-step femtosecond laser direct writing technique, which enormously improved processing efficiency compared to the existing method. The laser-treated cones contained hierarchical mi...

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Bibliographic Details
Published in:Applied physics letters 2018-11, Vol.113 (20)
Main Authors: Duan, Ji-An, Dong, Xinran, Yin, Kai, Yang, Shuai, Chu, Dongkai
Format: Article
Language:English
Subjects:
Applied physics
Bubbles
Cones
Direct laser writing
Lasers
Organic chemistry
Polytetrafluoroethylene
Transport
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Summary:In this paper, we present a rapid and simple method to fabricate superaerophilic polytetrafluoroethylene cones via a two-step femtosecond laser direct writing technique, which enormously improved processing efficiency compared to the existing method. The laser-treated cones contained hierarchical microstructures and exhibited self-driven and directional transport of gas bubbles along the cones and away from the tip, even when the cones were horizontal. Furthermore, the laser-treated cones exhibited excellent chemical and long-term stability. This work may provide an effective and simple approach to obtain efficient manipulation of gas bubbles in practical applications.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5054623