Ultra‐Rapidly Responsive Electret‐Based Flexible Pressure Sensor via Functional Polymeric Nanoparticle Synthesis

Abstract Flexible electrets can be used to construct eco‐friendly devices that utilize dielectric materials to measure physical parameters without requiring any power supply. By achieving detection capabilities that surpass human tactile abilities, such devices can be employed to create super‐sensing technologies, such as electronic artificial skin, based on solution processes. In this study, electret‐type particles with self‐power‐generating properties are synthesized and applied to flexible pressure sensors. Notably, an ultrafast response is achieved despite the device being flexible and fabricated using a solution process. Moreover, this technology is successfully implemented in both human and robot applications, detecting tactile signals in real‐time and serving as electronic artificial skin—a key super‐sensing aspect. These results showcase the possibilities offered by high‐performance flexible sensing technology and illuminate potential directions for future applications.