Title :
Temperature sensing properties of the passive wireless sensor based on graphene oxide films
Author :
Qing-Ying Ren ; Jian-Qiu Huang ; Li-Feng Wang ; Shu Wan ; Li-Tao Sun ; Qing-An Huang
Author_Institution :
Key Lab. of MEMS of the Minist. of Educ., Southeast Univ., Nanjing, China
Abstract :
This paper presents a passive wireless temperature sensor with graphene oxide (GO) films as the sensing material. In this sensor a temperature sensitive capacitor is used in a LC tank circuit. The resonant frequency of the tank circuit changes with the temperature. The test results imply that the temperature sensor based on graphene oxide films with proper concentration provides a sensitivity of 59.3 kHz /°C from -C40°C to 0 °C and 46.1 kHz /°C from 10°C to 60°C. The relationship between the sensing properties and dispersion concentrations is also studied. The measured results imply that the sensor based on GO films with proper concentration shows monotonic relationship over a certain temperature range between the sensing resonant frequency and temperature.
Keywords :
LC circuits; capacitive sensors; graphene; passive networks; temperature sensors; wireless sensor networks; CO; LC tank circuit; dispersion concentrations; graphene oxide films; passive wireless temperature sensor; resonant frequency; temperature -40 degC to 0 degC; temperature 10 degC to 60 degC; temperature sensing properties; temperature sensitive capacitor; Graphene; Resonant frequency; Temperature measurement; Temperature sensors; Wireless communication; Wireless sensor networks; capacitive sensor; graphene oxide films; passive wireless sensor; temperature sensor;
Conference_Titel :
SENSORS, 2014 IEEE
Conference_Location :
Valencia
DOI :
10.1109/ICSENS.2014.6985027
