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The two-dimensional nature of graphene, allowing a total exposure of all its atoms to the adsorbing gas molecules, provides the greatest sensor area per unit volume and outlines the possibility to employ this material as a powerful sensing layer. The synthesis and manipulation of graphene as well as the device fabrication are still challenging due to several technological limits. In the present work we report on a simple approach to fabricate chemiresistive sensors based on chemically exfoliated natural graphite. The devices show the ability to detect a toxic gas, such as NO2, down to few ppb at room temperature in controlled environments.
Springer, Boston, MA
Publication date: 
1 Jan 2012

Mara Miglietta, Tiziana Polichetti, Ettore Massera, Ivana Nasti, Filiberto Ricciardella, Silvia Romano, Girolamo Di Francia

Biblio References: 
Pages: 121-125
Sensors and Microsystems