Waterproof self-actuated flexible pressure sensor based on MWNT/PVDF

In the research of waterproof pressure sensors, most of the sensors use rigid structure and traditional battery power supply, which leads to unstable signal and poor biocompatibility, limiting the flexibility of the sensors themselves and the environmental conditions of applications. In this paper, based on the TENG principle, a waterproof self-driven flexible pressure sensor was fabricated using MWNT/PVDF electrostatically spun nanofiber membrane, flexible silver electrode and PET package. The performance of the sensor is improved in the analysis of the reference concentration of MWNT, the height of the cavity between the friction layers and the thickness of the negative friction layer, and the design and preparation of a cost-effective waterproof self-driven flexible pressure sensor is realized, which provides a new design idea for the fabrication of better flexible waterproof piezoelectric sensors.