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This study presents Shear Horizontal Surface Acoustic Wave (SH-SAW) sensors based on ink-jet printed poly (3,4-ethylenedioxythiophene) polystyrene sulfonate — multi wall carbon nanotubes (PEDOT:PSS-MWCNTs) and MWNTs-based inks as sensitive gas material. Experiments show the validation of the fabrication process of the acoustic platform and ink-jet printed sensitive layers. The characterization of...
This work demonstrates ink-jet printing as an alternative deposition method for low cost gas sensors based on graphene. Our ink-jet printing method paves the way towards for massive, large-area industrial production of Graphene Oxide (GO) multilayer sensitive films for Volatile Organic Compounds (VOCs) detection. The adsorption of vapor compounds on GO leads to a sensitivity of 30 Hz/ppm and 24 Hz/ppm...
This paper presents the feasibility of a novel gas sensor based on electromagnetic transduction and Carbon Nanotubes (CNTs) sensitive materials. The sensor is designed to provide a differential detection, by comparing the frequency response with and without the sensitive material, in the frequency band between 1 GHz to 10 GHz and can operate for wireless applications. Two designs are presented: micro-strip...
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