Development Of A Flexible Pressure Sensor Based On MXene

With the widespread application of computer technology,biomedical equipment,human-machine interface,and electronic skin equipment,the field of pressure sensing is rapidly developing.Graphene has dominated the research field of 2D materials in the past few years,becoming the most promising 2D material.Yury Gogotsi's group first published MXene in 2011.This two-dimensional material is similar to graphene.MXene has a large specific surface area,high electrical conductivity,good strength and other excellent properties.This new two-dimensional material series has been widely used in energy storage,electromagnetic interference shielding,transparent conductive electrodes and field effect transistors,and other aspects.However,in practical applications,few people make use of the change in the distance between the layers of the MXene layered structure to cause changes in conductivity for application development.In order to reduce the cost of the sensor and simplify the manufacturing steps,it is especially important to increase the sensitivity to meet the actual requirements.This paper conducts research on flexible pressure sensors and new two-dimensional material MXene.MXene has a relatively wide interlayer distance,so it has high sensitivity and flexibility under external pressure,excellent metal conductivity and hydrophilicity,making MXene a promising sensing material for piezoresistive sensors,which can provide excellent sensing performance.A flexible pressure sensor based on Ti3C2-MXene and interdigitated electrodes was manufactured through a simple and effective process.The sensor consists of three layers,with Interdigital Electrodes as the bottom layer,MXene as the middle layer,and silicone film as the top layer.Detailed design of MXene-based flexible pressure sensor hardware.The signal is collected through the Wheatstone bridge first,and then the signal is processed and converted.The collected signal is amplified using an operational amplifier,and the amplified analog signal is converted into a digital signal using an analog-to-digital converter.The Arduino development board is designed in detail.The signals collected by the sensors are processed by the Arduino.Finally,the OLED is used for display.MXene-based flexible pressure sensor can respond to various pressures,it has fast response,high sensitivity and good stability.