Figure 3: Reversible and repeatable switching process of individual 5-6 bond C60 molecules.
From: Switching Molecular Orientation of Individual Fullerene at Room Temperature
(a) Initial status of an individual C60 molecule before STM manipulation. Inset: The molecular orientation is indicated by the blue arrow and forms a angle of 45° with the respect to the 
surface direction labeled as the white arrow. (b–d) States of C60 after the first, second and third manipulations. The inset shows the magnified views of the molecular orientations of the manipulated C60 molecule. (e) Sketch diagram for the working principle of a reversible and repeatable molecular switch. The in-plane molecular orientations are indicators for two distinguished states. The states of the 5-6 bond molecules in (a) and (b) are defined as “on” and “off ” states. The pointer reversibly switches between “on” and “off ” by STM manipulation.
