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Lakshman K. Randeniya, Hongqing Shi, Amanda S. Barnard, Jinghua Fang, Philip J. Martin and Kostya (Ken) Ostrikov Harnessing the Influence of Reactive Edges and Defects of Graphene Substrates for Achieving Complete Cycle of Room-Temperature Molecular Sensing Small 9

Version of Record online: 1 JUL 2013 | DOI: 10.1002/smll.201300689

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Molecules bind strongly to graphene and graphene nanomesh edges. Annealing at high temperature or exposure to strong UV light is required for desorption. Alternatively, polar molecules can mediate rapid and complete desorption at room temperature. Electrostatic forces of polar molecules alter the overlap of graphene bands with substrate defect bands and molecule bands near Fermi level and cause desorption.

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