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Molecule cascade: Chevron basic operation #2

This pair of scanning tunneling microscope (STM) images shows the basic operation of the molecule cascade.


 


Molecule cascade: Chevron basic operation #2
After a few minutes, the middle molecule in the chevron has moved to a more stable location farther away from the other two. The key to the cascade circuit is that each molecule that moves creates a new chevron (or other metastable arrangement), which in turn causes another molecule to move.
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