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Directional fluid motion driven by the surface property of solid substrate is highly desirable for manipulating microfluidic liquid and collecting water from humid air. Studies on such liquid motion have been confined to dense material surfaces such as flat panels and single filaments. Recently, directional fluid transport through the thickness of thin porous materials has been reported by several research groups. Their studies not only attract fundamental, experimental and theoretical interest but also open novel application opportunities. This review article summarizes research progress in directional fluid transport across thin porous materials. It focuses on the materials preparation, basic properties associated with directional fluid transport in thin porous media, and their application development. The porous substrates, type of transporting fluids, structure-property attributes, and possible directional fluid transport mechanism are discussed. A perspective for future development in this field is proposed. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Yan Zhao, Hongxia Wang, Hua Zhou, Tong Lin. Directional Fluid Transport in Thin Porous Materials and its Functional Applications. Small (Weinheim an der Bergstrasse, Germany). 2017 Jan;13(4)

PMID: 27717131

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