Goldsmith, Brett R
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Publication DNA-decorated Graphene Chemical Sensors(2010-01-01) Lu, Ye; Goldsmith, Brett R; Kybert, Nicholas; Johnson, CharlieGraphene is a two-dimensional material with exceptional electronic properties and enormous potential for applications. Graphene’s promise as a chemical sensor material has been noted but there has been little work on practical chemical sensing using graphene, and in particular, how chemical functionalization may be used to sensitize graphene to chemical vapors. Here we show one route towards improving the ability of graphene to work as a chemical sensor by using single stranded DNA as a sensitizing agent. The resulting devices show fast response times, complete and rapid recovery to baseline at room temperature, and discrimination between several similar vapor analytes.