Fig. 6

Images of the region transferred to the adhesive tape in the adhesion test for carbon electrodes on a glass substrate with G/CB ratios (a) 1, (b) 2, (c) 3 and (d) 4. Adhesion test for carbon electrodes on a PET substrate with G/CB ratios (e) 1, (f) 2, (g) 3 and (h) 4.