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Artificial Leaves via Reproduction of Hierarchical Structures by a Fast Molding and Curing Process
Authors:Sungjune Park  Patrick van Rijn  Alexander Bker
Abstract:In this work, we have developed a practical approach for the replication of hierarchical structures on a native leaf surface via a fast two‐step molding process combining both the fast curability to prevent shrinkage of cells and the strong resistance to chemical compounds for further applications. The negative replica of the leaf was produced from perfluoropolyether (PFPE) by precise molding followed by a fast curing with UV. A liquid ceramic precursor material (polyvinylsilazane, PVSZ) was used to fabricate the positive leaf structure through the same process as applied for the negative imprint of the surface yielding a highly detailed replica of the native leaf surface structure. Static water contact angle measurements show that the biomimetic surfaces exhibit a wettability similar to the native leaves.
Keywords:artificial leaves with hierarchical structures  biomimetic  ceramic precursor  curing of polymers  surfaces wettability
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