Fig. 4From: Nanomaterial-based environmental sensing platforms using state-of-the-art electroanalytical strategiesa Schematic illustration for fabrication of patterned rGO thin films on APTES-coated quartz. b Ambipolar characteristics of rGO-FET measured in buffer solution. (Reprinted with permission from Reference Sudibya et al. 2011). © 2011 American Chemical SocietyBack to article page