期刊
ACS NANO
卷 13, 期 4, 页码 4124-4132出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b08753
关键词
unidirectional penetration; Laplace pressure; wettability; electrospinning; nanofibers
类别
资金
- National Natural Science Foundation of China (NSFC) [21774005, 21433012, 21374001, 21503005, 51772010]
- National Natural Science Foundation for Outstanding Youth Foundation
- Fundamental Research Funds for the Central Universities
- National Program for Support of Top-notch Young Professionals
- 111 project [B14009]
Anisotropic interfaces with opposite properties provide numerous unusual physical chemical properties that have played irreplaceable roles in broad domains. Here, we rationally designed an anisotropic Janus membrane with opposite wettability and special interpenetrating interface microstructure, which shows a unidirectional liquid penetration diode performance. Liquid is allowed to penetrate from lyophobic to lyophilic direction but is blocked in the reverse direction. Although conventional works suggested the liquid unidirectional penetration is driven by anisotropic wettability in heterogeneous interfaces, here, we theoretically and experimentally reveal that special interpenetrating topology plays another important role in liquid unidirectional penetration. This insight gives a general guide to build a series of Janus membranes for liquid unidirectional penetration with high hydraulic pressure rectification ratio. The liquid diode Janus membrane indicates great promise for liquid manipulation, smart separation membranes, functional textiles, and other fields.
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