Flexible Electrospun Nanofibers for Tactile Sensing and Integrated System Research

摘要

With the rapid development of wearable smart devices, medical care equipment, and human-machine application interfaces, the demand for flexible pressure sensors is progressively escalating. Among them, piezoelectric pressure sensors have been widely used due to their self-power supply capability, fast response speed, and relatively simple circuit. In this article, we construct a multicomponent flexible piezoelectric sensor polyvinylidene fluoride (PVDF)/ZnO@MXene (PZM) based on electrospun PVDF and hydrothermal-assisted growth of ZnO nanorods and spin-coated multilayer MXene solution. This tactile sensor has high sensitivity (2.32 V N<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{-{1}}$ </tex-math></inline-formula>), ultralow detection limit (0.01 N) and fast response time (46 ms). It detects subtle physiological signals like vocal cord vibrations and pulse beats, enabling perception and interaction with the external environment. Indium tin zinc oxide (ITZO) thin-film transistor (TFT) has the characteristics of high field effect mobility and low energy consumption, which can improve the effectiveness of sensor signal reading, processing and utilization. The integration of PZM with ITZO TFT into a sensor system can achieve signal amplification and ensure stable signal acquisition over 500 cycles, indicating its potential as a wearable electronic device for personalized identification, human-computer interaction, and soft robot manufacturing in the future.