Pandey, Manju and Mishra, Prabhash and Saha, Debdulal and Sengupta, Kamalendu and Jain, Kiran and Islam, S S (2013) Nanoporous alumina (gamma- and alpha-phase) gel cast thick film for the development of trace moisture sensor. Journal of Sol-Gel Science and Technology, 68 (2). pp. 317-323. ISSN 0928-0707

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Nanoporous metal oxide thick film in two phases was fabricated by gel-cast technique to use as trace moisture sensor. High resolution was observed only at 1 kHz frequency in both the phases of alumina. The sensitivity of moisture sensors at sub/low ppm range was estimated on the basis of capacitance, which depend upon the water concentration and frequency of excitation in porous structure of alumina based moisture sensor. The sensitivity towards trace level was confirmed by impedance spectroscopy. FESEM, BET, AFM and XRD techniques were employed for the microstructural characterization. The results are highly encouraging and will be very useful for developing trace level commercial moisture sensor.

Item Type: Article
Subjects: Engineering Materials
Divisions: Sensor and Actuator
Depositing User: Bidhan Chaudhuri
Date Deposited: 05 Feb 2014 11:40
Last Modified: 05 Feb 2014 11:40

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