Wearable PVDF-TrFE-based Pressure Sensors for Throat Vibrations and Arterial Pulses Monitoring

This paper presents a self-powered flexible pressure sensor called the TVAP sensor for throat vibration and wrist arterial pulse monitoring. The sensor is fabricated using PVDF-TrFE nanofibers, which are more suitable for wearable devices than conventional piezoelectric ceramics due to their low cost, high flexibility, and biocompatibility. The TVAP sensor is able to convert mechanical energy into electricity and vice versa and has a sensitivity of 102 mV/N for sensing force. Experimental results demonstrate the TVAP sensor’s ability to detect pressure changes and promising potential for detecting early onset of cardiovascular disease and assessing personal health status.