Abstract: A single‐electrode nylon fiber‐incorporated polytetrafluoroethylene (PTFE) electret flexible film with hollow cylinder structure is developed for enhanced mechanical energy harvesting. The power is generated by the nylon fiber/PTFE electret film via bending deformations that result in charges transferring between the conductive carbon black silicone rubber (CBS) electrode and ground. The results demonstrate that the nylon fiber/PTFE electret film results in enhanced open‐circuit voltage, Voc, (about 0.45 times more) compared to a pure PTFE based on the hollow cylinder structure. With the step‐increased distance of travelling for the reported hollow cylinder structure device, more power is generated by this mechanical‐electrical energy conversion because of a greater deformation compression onto the nylon fiber/PTFE electret film. The peak of the generated short‐circuit current, ISC, and Voc based on the nylon fiber/PTFE electret film with 1 m s−2 are up to 0.35 μA and 72 V, respectively. It is also possible to light an 8 light‐emitting diode (LED) setup by finger tapping, demonstrating the good mechanical energy conversion performance of the nylon fiber/PTFE electret film. Moreover, a quick voltage response of the nylon fiber/PTFE electret film is demonstrated in several different ultrasonic environments (such as 70 kHz and 30 kHz). [ABSTRACT FROM AUTHOR]
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