Hydrophobic and stable MXene/ reduced graphene oxide/polymer hybrid materials pressure sensors with an ultrahigh sensitive and rapid response speed pressure sensor for health monitoring

Abstract

Pressure sensors with highly sensitive, flexibility, biocompatibility and scalability have aroused widespread research interest in the field of smart skin and wearable electronics. Furthermore, to construct physiological signal monitoring equipment with best high-sensitivity, mechanical stability, low-cost, and ultra-low detection limit has always been a considerable challenge. In this paper, spin-coating process is used to prepare Mxene/rGO/P (VDF-TrFE) film and apply it to piezoresistive sensors. The lower detection limit, sensitivity, and response time of the sensor based on Mxene/rGO/PVDF is 8 Pa, 2298 kPa−1, and 10 ms respectively, and it has good stability in 10000 cycles. Piezoresistive sensors based on Mxene/rGO/P(VDF-TrFE) can easily capture signals below 8 Pa, so it can clearly test adult pulses randomly. The Mxene/rGO/P(VDF-TrFE) thin film sensor can monitor human physiological signals (such as finger touch and pulse) in real time. The potential applications of the sensor in measuring pressure distribution and human-computer interaction are discussed.