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Graphene, the archetypal two-dimensional material, is attracting increasing attention due to its unique and superior properties. The atomic thickness of the graphene sheet is extremely sensitive towards the change of local environment, making it an ideal channel material in field-effect transistors used as electronic sensors. In this minireview, we review the graphene-based electronic sensors for detection of various chemicals and biomolecules. We first introduce the different kinds of graphene materials used in the electronic sensors and how they affect the device sensing performance. Then we focus on the use of the reduced graphene oxide for the fabrication of cost-efficient, high-yield and highly reproducible sensing devices.
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