Figure 3 | Scientific Reports

Figure 3

From: Tunable growth of one-dimensional graphitic materials: graphene nanoribbons, carbon nanotubes, and nanoribbon/nanotube junctions

Figure 3

Competing nucleation between GNRs and CNTs. (a) Schematic of a tubular CNT and a planer GNR on h-BN substrate. (b) Free energy of formation of CNTs (black line) and zigzag/armchair (dot lines/dash lines) GNRs as a function of H2 pressures at a few representative temperatures. (c,d) Theoretical growth phase diagram. Red and blue regions stand for energetically favorable for growing CNTs and GNRs, respectively. The dashed lines represent equal probability of yielding GNRs and CNTs of different width and diameter. The diameter and the width of the compared CNTs and GNRs are denoted along the dash lines (CNTs’ diameter/ GNRs’ width).

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