Figure 1

(A) SEM and (B) optical images of as-deposited GNRs on glassy carbon and gold surfaces, respectively. The inset in (B) is a false-colour map generated from the integrated intensity of the Raman G mode (marked in C) at 1,610 cm−1, superimposed over the optical image, showing the network-like distribution of the nanoribbons. (C) A typical Raman spectrum recorded from the GNR deposit (in B). In the inset, the RBLM mode at around 284 cm−1 is highlighted. (D) 27.5 × 35 μm2 AFM image taken on a small GNR aggregate deposited on the silicon surface. (E) Surface profile taken along the solid line depicted in (D). The left of the profile corresponds to the bottom extreme of the line. (F) 3 × 3 μm2 AFM image shown in 3D representation and with illumination to highlight the multilayer morphology.