A Microwave Humidity Sensor Based on One-Dimensional Nanomaterials

In this paper, A design method to improve the performance of humidity sensors is proposed, which includes preparation of moisture-sensitive materials by high-voltage electrostatic spinning and generation of one-dimensional nanomaterials by applying a higher voltage to the liquid. The microwave humidity sensors features high sensitivity and the test results demonstrates a wide sensitivity range. The proposed T-branch double-split ring resonator microwave humidity sensor with a humidity detection range more than 10-90% RH, the sensitivity more than 0.5 MHz/% RH, the response time less than 16 s, the recovery time less than 20 s, and the Q-value more than 400 was designed.