Transfer-Printed Arrays of Dewetted Microdroplets for Triboelectric Nanogenerators
발표자
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초록
내용
Triboelectric nanogenerators (TENG) is of interest as an emerging power harvester due to its simple device architecture and high efficiency. Here, we demonstrate a novel transfer-printing technique of hierarchically dewetted microdroplets on various TENG surfaces for performance enhancement. Our method is based on controlled dewetting of a thin supramolecular assembled film of two end-functionalized polymer blends on a prepatterned mold, followed by the physical pattern-transfer of arrays of the dewetted droplets consisting of supramolecular assembled nanostructures. The hierarchically dewetted droplets comprising soft-etched nanopores efficiently improve the performance of a TENG by more than three times compared to one without the pattern. The pattern-transfer is successfully achieved on various surfaces including not only oxides, plastics, and metals, but also fabrics, and coins, making our approach a convenient way for enhancing the triboelectric performance of a given TENG.