Flexible self-cleaning temperature-pressure sensor based on rGO/TPU composite film

The integration of multi-functional and flexible wearable sensors is crucial for the development of comprehensive wearable electronic platforms. However, there is still much room for improvement in terms of response time and the accuracy of temperature detection. Here, a multifunctional wearable sensor has been developed, utilizing a composite film of reduced graphene oxide/thermoplastic polyurethane (rGO/TPU) prepared through electrospinning and vacuum filtration. In terms of temperature detection, the sensor exhibits remarkable accuracy of 0.1°C within the range of 36.5°C-42°C, meeting the precise requirements for human body temperature monitoring. Regarding the response to pressure, this sensor has a sensitivity of up to 12.3 kPa^-1 within the range of 0-20 kPa. After coating the surface of the rGO/TPU composite film with a layer of fluorocarbon material coating (Fluere-1706Y), the sensor was endowed with remarkable self-cleaning capabilities. This multi-functional sensor provides a comprehensive wearable electronic platform.