Flexible conductive film based on silver nanowires in patients’ sports rehabilitation

Abstract

The flexible conductive film, which is composed of high aspect ratio silver nanowires, multi walled carbon nanotubes and PDMS, has a good application prospect in the field of flexible wearable sensors. Based on the above background, the purpose of this study is to analyze the application and effect of flexible conductive film based on silver nanowires in patients' sports rehabilitation. In this study, an improved one-step polyol method was used, and copper chloride was used as the nucleation control agent to prepare high aspect ratio silver nanowires with uniform shape and size. The flexible conductive film was prepared by combining carbon nanotubes and polyurethane (PU) doped with self-made silver nanowires. Then, using self-made silver nanowires and multi wall carbon nanotubes as conductive materials, PDMS as flexible substrate, silver nanowires and multi wall carbon nanotubes were uniformly deposited on PDMS to make flexible conductive film, and then assembled into a simple flexible tensile strain sensor. The flexible strain sensor was installed on the fingers, wrists, elbows and knees of the patients. The experimental results show that the linearity of flexible strain sensor is greatly improved, the maximum nonlinear error is 3.54%, and the minimum hysteresis error is 5.18%. The flexible strain sensor based on silver nanowire is installed in the rehabilitation movement part of patients for monitoring. The sensor can convert the movement signal of each part into electrical signal curve, and can identify the movement part of patients and the movement state of the movement part according to the electrical signal curve.