─approximately three times greater than that of the pure PVDF and the cellulose template alone. The remarkable piezoelectric sensitivity observed in the 3D porous PVDF/cellulose composite stems from the fact that the compressive stress applied to the polar microspheres induces a substantial effective electric displacement in the direction of the compressive force. This study opens the door to a new class of rationally designed piezoelectric sensors for wearable human-computer interaction applications.
Yang et al. (Fri,) studied this question.