Issue 4, 2021

Recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability

Abstract

Janus wettability membranes have received much attention because of their asymmetric surface wettability. On the basis of this distinctiveness from traditional symmetrical membranes, relevant scholars have been inspired to pursue many innovations utilizing such membranes. Femtosecond laser microfabrication shows many advantages, such as precision, short time, and environmental friendliness, over traditional fabrication methods. Now this has been applied in structuring Janus membranes by researchers. This review covers recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability. The background in femtosecond laser-structured Janus membranes is first discussed, focusing on the Janus wettability membrane and femtosecond laser microfabrication. Then the applications of Janus membranes are introduced, which are divided into unidirectional fluid transport, oil–water separation, fog harvesting, and seawater desalination. Finally, based on femtosecond laser-structured Janus membranes, some existing problems are pointed out and future perspectives proposed.

Graphical abstract: Recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability

Article information

Article type
Review Article
Submitted
15 set 2020
Accepted
04 jan 2021
First published
05 jan 2021

Nanoscale, 2021,13, 2209-2226

Recent advances in femtosecond laser-structured Janus membranes with asymmetric surface wettability

Z. Wu, K. Yin, J. Wu, Z. Zhu, J. Duan and J. He, Nanoscale, 2021, 13, 2209 DOI: 10.1039/D0NR06639G

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