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3D-Printed Repeating Re-Entrant Topography to Achieve On-Demand Wettability and Separation

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posted on 21.07.2020, 16:16 authored by Bingchen Wang, Jun Chen, Cliff Kowall, Lei Li
While it is difficult and expensive to fabricate a complicated surface structure via conventional techniques, three-dimensional (3D) printing serves as a time-efficient and cost-efficient alternative. In the current study, a novel repeating re-entrant topography is fabricated by two-photon polymerization 3D printing. The experimental results show that the repeating re-entrant surface enhances the desired on-demand surface wettability. Moreover, the 3D-printed membranes with the repeating re-entrant structures enable the efficient on-demand separation of liquid mixtures with high flux, which is critical for the wastewater treatment in the chemical industry.