Figure 1

Structure and fabrication process of a book-shaped TENG.
(a) Schematic diagram of a TENG on a folded PET substrate. (b) Photographs of a TENG in its initial, compressed and released states.
Structure and fabrication process of a book-shaped TENG.
(a) Schematic diagram of a TENG on a folded PET substrate. (b) Photographs of a TENG in its initial, compressed and released states.