Atomically resolved mechanical response of individual metallofullerene molecules confined inside carbon nanotubes
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2008-06
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Journal Article
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Abstract
The hollow core inside a carbon nanotube1 can be used to confine single molecules2,3 and it is now possible to image the movement of such molecules inside nanotubes4,5. To date, however, it has not been possible to control this motion, nor to detect the forces moving the molecules, despite experimental and theoretical evidence suggesting that almost friction-free motion might be possible inside the nanotubes6,7,8,9,10,11,12,13. Here, we report on precise measurements of the mechanical responses of individual metallofullerene molecules (Dy@C82) confined inside single-walled carbon nanotubes to the atom at the tip of an atomic force microscope operated in dynamic mode14,15. Using three-dimensional force mapping with atomic resolution16, we addressed the molecules from the exterior of the nanotube and measured their elastic and inelastic behaviour by simultaneously detecting the attractive forces and energy losses with three-dimensional, atomic-scale resolution.
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3 (6)
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337 - 341
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03609 - Hierold, Christofer / Hierold, Christofer