Graphene-based high-sensitivity flexible temperature sensor
Aiming at the problems of poor wearability of traditional temperature monitoring equipment,complex processing technology,and incompatibility between response speed and measurement precision,polyvinyl alcohol is selected as the flexible substrate to prepare graphene/titanium dioxide-sodium alginate temperature sensitive composite conductive ink,and screen printing technology is used to process interdigital silver electrode and fabricate flexible temperature sensor. Test results show that the sensor has good temperature sensitivity in the temperature range of 30～80℃,sensitivity is-0.00636℃-1,and the temperature response characteristic curve has good linearity with a regression coefficient of 0.976. The repeatability is good,and the dynamic response time is 9～14 s;the linearity is the best at 37～40℃,with a regression coefficient of 0.998 and a response time is about 9～10 s,the measurement precision is 0.1℃. The flexible temperature sensor and its array produced have great potential for real-time temperature monitoring in medical,sports,and other fields.
flexible temperature sensorscreen printinggrapheneTiO2sodium alginate
万方数据
维普
