Toward Commercialization of Mechanical Energy Harvester: Reusable Triboelectric Nanogenerator Based on Closed-Loop Mass Production of Recyclable Thermoplastic Fluoropolymer with Microstructures

Figure 4

(a) A conceptual example of raindrop energy harvesting with L-S TENG and the working mechanism of the L-S TENG. (b) Contact angles of the flat surface PFA contact layer and the surface-structured PFA contact layer. of the L-S TENG by varying (c) and (d) .

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(b)

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