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C 60 on Gold: Adsorption, Motion, and Viscosity
Author(s) -
Teobaldi Gilberto,
Zerbetto Francesco
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700111
Subject(s) - spins , materials science , viscosity , adsorption , polymer , molecular dynamics , surface (topology) , chemical physics , tribology , nanotechnology , condensed matter physics , composite material , chemistry , physics , computational chemistry , geometry , mathematics
In the thick of it : C 60 spins rapidly in the solid but just how viscous is its motion on a perfect gold surface? Molecular dynamics simulations of C60 on a gold surface (see image) show the presence of a variety of molecular motions, where the entire cage spins and bounces on the surface. Two motions, namely the cage bouncing on the surface and the intercage rattling, govern the tribological properties of the system that are quantitatively similar to those of melt polymers.