Figure 2 .

GO-film-functionalized IDE. (a) Photograph of stable GO dispersion (1 mg ml−1). (b) Schematic illustration of the IDE functionalized by GO films. (c) Tapping-mode AFM image of the GO sheets. (d) The height curve of the selected GO sheet shown in (c).

Yao et al. Nanoscale Research Letters 2012 7:363   doi:10.1186/1556-276X-7-363
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