ABSTRACT
Graphene is a single atomic layer material composed of carbon atoms organized into a honeycomb lattice. Its two-dimensional shape, high conductivity, and low noise level make it a promising building block for room-temperature chemical sensors with ultimate molecular resolution. After briey introducing the electronic properties of graphene, this chapter presents the recent progress on chemical sensors based on graphene. Performances of current sensor architectures are correlated to theoretical simulations based on rst principle calculations. Strategies to acquire gas selectivity, such as low-frequency noise analysis or graphene functionalization, are also reviewed. It is nally shown that graphene gas sensors have a great potential for air quality monitoring, military applications, or explosives detection.
