Ultra-sensitive behaviour of ruthenium-doped nickel ferrite thin film humidity sensor

Chemical sensors of homogenous particles, act as active centres, are envisaged for adsorption/desorption of water molecules. The adsorption/desorption of water molecules are lined up with surface of the sensor device. The sensor material was prepared via efficient chemical co-precipitation method. The ruthenium-doped nickel ferrite sensor endows ultra-sensitivity for humidity i.e. 4.04 and 4.37 4.04 MΩ/% relative humidity at low- and mid-range, respectively with rapid response/recovery time of 35/148 s.