Research on flexible LC wireless humidity sensor based on GO/Mxene
A flexible LC wireless humidity sensor based on GO/Mxene is investigated.Its purpose is to compensate for the limitations of a single material and meet the requirements for passive sensing and bending performance in applications.The principle of the sensor is analysed,and a flexible cross finger electrode antenna based on polyimide is designed.The resonant frequency of the antenna is 146 MHz,and the electric field distribution on the antenna is obtained using simulation software.GO/MXene is prepared.The surface morphology and microstructure of GO/MXene are characterized using scanning electron microscopy and energy spectrum analyze,and its structure and constituent elements of GO/MXene are verified.The humidity sensor is fabricated by placing the prepared GO/MXene as a humidity sensitive material at the strongest field strength of the antenna.The performance of the sensor is tested.The results showed that the sensor has high sensitivity.In the relative humidity(RH)range of 20～70％RH,the sensitivity of the sensor reached 90.51 kHz/％RH,and in the relative humidity range of 70～95％RH,the sensitivity reached 651.86 kHz/％RH.At the same time,the sensor has good stability and response time performance,which can monitor human respiration.The Sensor has considerable application prospects in fields such as health detection and robot skin.
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