Figure 1: STM images of individual 5-6 bond C60 absorbed on Si(111)-(7 × 7) surface at room temperature.
From: Switching Molecular Orientation of Individual Fullerene at Room Temperature
(a) STM images of individual 5-6 bond C60 absorbed on Si (111)-(7 × 7) surface at room temperature, Vt = 2.28 V, It = 0.12 nA. The faulted and unfaulted parts of a Si (111)-(7 × 7) unit cell are labeled as F and U. Inset: high-resolution STM image of a single 5-6 bond C60, in which the molecular orientation of the C60 is defined as the pink arrow. (b) The relaxed structure for 5-6 bond C60 molecule absorbed on Si(111)-(7 × 7) surface calculated by DFT. The pink arrow represents the orientation of 5-6 bond C60 and the red arrow represents direction 
of Si (111)-(7 × 7). (c) Simulated STM image of 5-6 bond C60 based on the relaxed structure model in (b). (d) 5-6 bond fullerenes with 12 in-plane orientations. The white arrows represent the molecular orientations of the C60, and the yellow arrows represent the surface direction of 
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