Impact induced chemisorption of C20 isomers on diamond (001)-(2 x 1) surface

The adsorption of low-energy C-20 isomers on diamond (0 0 1)-(2 x 1) surface was investigated by molecular dynamics simulation using the Brenner potential. The energy dependence of chemisorption characteristic was studied. We found that there existed an energy threshold for chemisorption of C-20 to occur. Between 10 and 20 eV, the C-20 fullerene has high probability of chemisorption and the adsorbed cage retains its original structure, which supports the experimental observations of memory effects. However, the structures of the adsorbed bowl and ring C-20 were different from their original ones. In this case, the local order in cluster-assembled films would be different from the free clusters. (C) 2001 Elsevier Science B.V. All rights reserved.