Figure 2From: Seedless growth of zinc oxide flower-shaped structures on multilayer graphene by electrochemical depositionTop-view and magnified images of FESEM and EDX spectra for ZnO structures. The structures were grown at current densities of (a) −0.1 mA/cm2, (b) −0.5 mA/cm2, (c) −1.0 mA/cm2, (d) −1.5 mA/cm2, and (e) −2.0 mA/cm2.Back to article page