Design and Development for Capacitive Humidity Sensor Applications of Lead-Free Ca, Mg, Fe, Ti-Oxides-Based Electro-Ceramics with Improved Sensing Properties via Physisorption. - Ashish Tripathy; Sumit Pramanik; Ayan Manna; Satyanarayan Bhuyan; Nabila Farhana Azrin Shah; Zamri Radzi; Noor Azuan Abu Osman (Sensors, 2016)