Flexible screen-printed temperature sensor based on Mn-Co-Ni metal oxide powder filled PVB polymer

Abstract

There has recently been renewed interest in wearable devices and electronic skin because of the demand in real-time monitoring of human body temperature. This work developed a flexible paper-based temperature sensor by screen printing technology. The sensing layer is composed of Mn-Co-Ni metal oxide powders filled with Polyvinyl butyral (PVB). The flexible temperature sensor shows extremely high sensitivity (3.14%° C− 1) at human body temperature (25 to 45° C). It also exhibits excellent durability (less than 0.25%) during the long-term aging tests, which indicates that the flexible temperature sensor has great potential in wearable devices and electronic skin.