P2.0.17 Ta2O5 nanoporous membrane for chemical sensing in harsh environment
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.0 Metal Oxide-based Sensors
- A. Imbault, Y. Wang, P. Kruse - McMaster University (Canada), E. Comini, G. Sberveglieri - University of Brescia, CNR-IDASC (Italy), E. Strelcov, A. Kolmakov - Department of Physics, Southern Illinois University at Carbondale (USA)
- 1316 - 1318
The conductometric gas sensors made of nanoporous oxide ultrathin membranes can be particularly promising for the active sampling of the diluted analytes. Here we report the case study of the electron transport and gas sensing properties of such a membrane made of Ta2O5. In spite of well-known high thermal and chemical stability, Ta2O5 membranes appear to exhibit noticeable chemical sensitivity at high temperatures above 300 C. The proposed suspended architecture of the gas penetrable Ta2O5 membranes as active sensing element, may lead to the new designs of the ultrasensitive analytical systems operating at high temperature and harsh environments.