Common thin film materials for flexible pressure sensors

According to the different requirements of the information to be measured, the flexible pressure sensor has different commonly used film materials. Commonly used film materials include nanocomposite films, transparent conductive oxide films, metal films and so on. The advantage of the metal film is that it can obviously change its surface characteristics, give it various new functions, and the substrate is soft and flexible. The transparent conductive oxide film not only has good conductivity, but is also foldable, not fragile, easy to transport, light in weight, and optically transparent in the visible light range. The initial use of nanocomposite film materials on sensors is based on ultrafine particles. In recent years, due to the wide application of low-dimensional materials and array materials, carbon nanopowder composite materials, carbon nanotube composite materials, carbon nanotube/carbon black/silicone rubber composite arrays [5] and other materials have been widely used in sensors.