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. 2014 Nov 18;4:7086. doi: 10.1038/srep07086

Figure 1. TEM image and temperature-dependent resistance of Bi nanoribbons.

Figure 1

(a) transmission electron microscopy image of nanoribbons. (b) The resistance as a function of temperature of two individual nanoribbons, S1 (curve b) and S2 (curve a) with thickness about 40 nm and 80 nm, respectively, where a metallic behavior can be observed in S2 and a non-metallic can be observed in S1. The curves for S1 after exposed to air condition with 2 day (curve c) and 7 days (curve d) are also shown. The inset is a SEM image of a nanoribbon device for four-probe transport measurements.