Printed transducers using nanomaterials for gas sensing - Archive ouverte HAL
Article Dans Une Revue Materials Today: Proceedings Année : 2019

Printed transducers using nanomaterials for gas sensing

Résumé

New generation of room temperature screen-printed gas sensors based on either gas sensitive semiconductive ZnO nanoparticles or on free-standing cantilevers coated with a carbon nanotube sensitive layer are herein proposed. The first type is using ZnO nanoparticles printed and sintered at 400°C on interdigitated Pt electrodes. Instead of UV LED activation giving a sensitivity improvement at room temperature, halogen lighting activation yields a good sensitivity, comparable to those given in the literature. The second type is using resonating MEMS based on piezoelectric Au/PZT/Au cantilevers coated with CNTs.. In this case, another transducing mechanism is added onto the cantilever thanks to a top interdigitated electrodes allowing both the simultaneous measurement of the resonance frequency shifts of the cantilever and the resistance variations of the resistive sensitive coating.
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Dates et versions

hal-02133410 , version 1 (18-05-2019)

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Hélène Debéda, van Son Nguyen, Pierrick Clément, Veronique Jubera, Eduard Llobet. Printed transducers using nanomaterials for gas sensing. Materials Today: Proceedings, 2019, 6, pp.306-309. ⟨10.1016/j.matpr.2018.10.421⟩. ⟨hal-02133410⟩
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