Curvature effect on the interaction between folded graphitic surface and silver clusters

Details Curvature effect on the interaction between folded graphitic surface and silver clusters Curvature effect on the interaction between folded graphitic surface and silver clusters

2008-08-12

arxiv.org/abs/0808.1715v1

Phys. Rev. B 79, 193403 (2009)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.79.193403

Evidence of curvature effects on the interaction and binding of silver clusters on folded graphitic surfaces has been shown from both experiment and theory. Density Functional Theory (DFT) calculations within the local density and generalized gradient approximations have been performed for the structural relaxation of both Ag and Ag$_2$ on curved surfaces, showing a cross-over from quantum to classical behaviour. Using Lennard-Jones potential to model the interaction between a single cluster and the graphene surface, evidence is found for the curvature effect on the binding of silver nano-particles to folding graphitic surfaces. The theoretical results are compared to SEM and AFM images of samples obtained from pre-formed silver cluster deposition on carboneous substrates exhibiting anisotropic pleat structures.

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