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. 2018 Mar 28;10(16):14175–14182. doi: 10.1021/acsami.8b02177

Figure 4.

Figure 4

Constant-height nc-AFM images measured with a CO-terminated tip at 5 K. (a) Frequency-shift image. (b) High-pass-filtered image of (a). (c) Simultaneously acquired tunneling current signal. (d) Simplified 6P structure superimposed on the atomic model of the In2O3(111) surface. (e) Constant-height STM image showing the substrate features used as a reference for the adsorption site assignment in (d); the dark triangles in the STM images correspond to regions of the blue In(6c) atoms.