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High-Efficiency Bubbles Transportation in Aqueous Environment on Serial-Wedge-Shaped Wettability Pattern

Song, J; Liu, Z; Wang, X; Liu, H; Lu, Y; Deng, X; Carmalt, CJ; (2019) High-Efficiency Bubbles Transportation in Aqueous Environment on Serial-Wedge-Shaped Wettability Pattern. Journal of Materials Chemistry A , 13 (1) pp. 728-736. 10.1039/C9TA02095K. Green open access

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Abstract

Spontaneous and directional pumpless transportation (SDPT) of subaqueous gas bubbles has great prospects in eliminating the destructive gas bubbles in fluid transportation pipes. However, with current technology it is difficult to realize the non-buoyancy driven long-distance SDPT. How to realize the long-distance SDPT of subaqueous gas bubbles and how to fabricate the surface with the capacity of long-distance SDPT of subaqueous gas bubbles on engineering metal materials still remains a challenge. Here, a serial-wedge-shaped wettability pattern with the exterior surrounding subaqueous superaerophobic region and inside interior subaqueous superaerophilic region is designed to realize the long-distance SDPT of subaqueous gas bubbles. The process is driven by unbalanced surface tension forces, hence, subaqueous gas bubbles not only can be transported on the horizontal and straight pattern, but can also be easily transported on the horizontal and spiral-shaped pattern or on a wave-shaped pattern that is spatially tilted. In addition, a universal method composed of electrochemical etching and laser etching is also proposed to fabricate the serial-wedge-shaped wettability pattern on various engineering metal materials including Al, Mg alloy, Ti alloy, and Zn.

Type: Article
Title: High-Efficiency Bubbles Transportation in Aqueous Environment on Serial-Wedge-Shaped Wettability Pattern
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/C9TA02095K
Publisher version: https://doi.org/10.1021/acsnano.8b08010
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10073688
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