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Single-stranded (ss)-DNA tethering on GO (G-DNA) increases the conductivity of the device. Successive hybridization and dehybridization of DNA on the G-DNA device results in completely reversible increase and restoration of conductivity. Inset shows a fluorescent image for the GO device hybridized G-DNA (ds) sheet with wrinkles and folds clearly visible. (Reproduced with permission from Ref. 78, copyright 2008 American Chemical Society).
