fig1

Figure 1. Fabrication of LF-TENG and surface characterization. (A) Schematic diagram of the fabrication of LF-TENG; (B) SEM image of the layered indium tin ITO/Cu electrode sputter deposited on O₂-treated PDMS. The EDX analysis of the elemental composition of the layered ITO/Cu electrode before PMMA spin coating (C) and after spin coating PMMA (D). EDX: Energy dispersive x-ray; ITO/Cu: indium tin oxide-copper; LF-TENG: laminated flexible-triboelectric nanogenerator; PDMS: polydimethylsiloxane; PMMA: polymethyl methacrylate; SEM: scanning electron microscopy.