Figure 2.

STS near an edge of graphene nanoisland. (a) Atomic resolution CC-STM image of top-left side of the island in Figure 1b (VS = 0.05 V, Iset = 1 nA). The hexagons denote the honeycomb lattice structure of G. (b) STS spectra measured at nine positions along the line AB across the G edge towards the Ir region. The inset shows the dI/dV signal height at VS = 1.0 V as a function of distance from the edge. The dI/dV signal decreases from the position of approximately 1.0 nm inside the island towards the edge.

Phark et al. Nanoscale Research Letters 2012 7:255   doi:10.1186/1556-276X-7-255
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