Research Progress of Wearable Flexible Sensors Based on Polydimethylsiloxane

A wearable flexible sensor is a device that is tightly attached to the skin or tissue of human to collect physiological parameters of the body for data analysis and reference in real time, which has important applications in the fields of medical care, diagnosis and treatment, etc. With the advantages such as stable chemical properties, strong thermal stability, good transparency and biocompatibility, polydimethylsiloxane (PDMS) has been proved to be the best choice for wearable flexible sensors substrates, which can achieve different functions through surface modification and overall characteristic customization. In this paper, the research progress of wearable flexible sensors based on PDMS in recent years is reviewed, as well as the working principles of the sensors and performance comparisons of conductive modified materials. The performance parameters, advantages and disadvantages of different conductive modified materials are exhibited and compared due to their significance in the sensors. This review also introduces different sensors from the application aspect, such as photosensors, temperature sensors, strain sensors, pressure sensors and biochemical sensors. Finally, the challenges and development directions of wearable sensors are prospected.