Multilayered Electret/Triboelectric Generator for Selfpowered Instantaneous Tactile Imaging

In this work, based on the principle of triboelectric/electrostatic hybrid generator, a new high-output, flexible and transparent electret power generator was fabricated by using transparent polymer materials. Moreover, thermoplastic method is proposed to shape the wavy structures perpetually. It is able to recover to previous state when pressure applied. Triggered by hand pressing, the instantaneous peak output voltage and short-circuit current can be up to 800V and 50 μA respectively, which are able to drive hundreds of commercial light-emitting diodes (LEDs). Finally, a 5*5 pixels harvester array was constructed with instantaneous touch events for spatially mapping and motion tracking. The force is capable of recording the electroluminescent signals of the LEDs without external power sources. This work is a significant step forward in self-powered tactile-mapping visualization technology, with a wide range of potential applications in touchpad technology, personal signatures, smart wallpapers, robotics, and safety-monitoring devices.