Printed transducers using nanomaterials for gas sensing. (2019)

• Record Type: Journal Article
• Authors: Debéda, Hélène; Nguyen, Van Son; Clément, Pierrick; Jubera, Véronique; Llobet, Eduard
• Is Part Of: Materials today. Volume 6:Part 3(2019)
• Page Start: 306
• Page End: 309
• Publication Date: 2019
• Subjects: Screen-printing -- CNTs -- ZnO -- MOS -- cantilever -- PZT -- nanomaterials; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2018.10.421
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: 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.