Figure 2.
AFM images and histograms of gold nanoparticles decorated SWNTs with different charge density: (A) 1 mC/cm2, (B) 5 mC/cm2, and (C) 10 mC/cm2. The deposition potential was fixed at −0.4 V versus pseudo reference electrode (chlorinated Ag/AgCl wire). The initial resistance of SWNTs before decoration was in the range of 10 to 40 KΩ.