Applied Science and Convergence Technology

Fig. 3. (a) Schematic of conductance tuning and oxidation of graphene with H₂SO₄ electrolyte. (b) Conductance variation of graphene as a function of time while sweeping V_EG from 0 to −1.95 V. EFM (V_EFM) images of graphene after oxidation process (1) in (b), upon applying bias voltage V_DS = −1 V on the (c) top and (d) bottom electrodes. (e) EFM image profile following along the black dashed line in (d). The red dashed arrow denotes the same as position as in (d). (f) Conductance of graphene as a function of electrolyte gate voltage V_EG. The red dashed arrows indicate the conductance of graphene (~25 µS) for V_EG = 0 V.

Applied Science and Convergence Technology 2021;30:183~185 https://doi.org/10.5757/ASCT.2021.30.6.183