Fig. 5: Statistical data on GNR lengths derived from samples created with different surface temperatures during deposition.

a Large-scale scan of GNRs grown from precursors deposited at 180 °C substrate temperature. Scan parameters: −1.75 V, 25 pA. Scale bar 30 nm. b Pareto plot of GNR lengths from the sample shown in a, with the most populated bin ranging from 12 to 17 nm, mean length 17.9 nm, and longest individual GNR at 55.6 nm. c Representative scan of GNRs grown from precursors deposited at 100 °C substrate temperature. Scan parameters: −1.95 V, 20 pA. Scale bar 15 nm. d Pareto plot of GNR lengths from the sample shown in c, with the most populated bin ranging from 7 to 9 nm, mean length 9.57 nm, and longest individual GNR at 28.23 nm.