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Graphene on paper: A simple, low-cost chemical sensing platform

TitleGraphene on paper: A simple, low-cost chemical sensing platform
Publication TypeJournal Article
Year of Publication2015
AuthorsKumar, S, Kaushik, S, Pratap, R, Raghavan, S
JournalACS applied materials & interfaces
Keywordsgas sensors; graphene; graphene transfer; graphitic sensors; paper

Graphene layers have been transferred directly on to paper without any intermediate layers to yield G-paper. Resistive gas sensors have been fabricated using strips of G-paper. These sensors achieved a remarkable lower limit of detection of ∼300 parts per trillion (ppt) for NO2, which is comparable to or better than those from other paper-based sensors. Ultraviolet exposure was found to dramatically reduce the recovery time and improve response times. G-paper sensors are also found to be robust against minor strain, which was also found to increase sensitivity. G-paper is expected to enable a simple and inexpensive low-cost flexible graphene platform.