Phase behavior and material properties of hollow nanoparticles

Details Phase behavior and material properties of hollow nanoparticles Phase behavior and material properties of hollow nanoparticles

2000-09-02

arxiv.org/abs/cond-mat/0009027v1

Phys. Rev. E 62: 6957 - 6967 (2000)

Physics

Condensed Matter

Soft Condensed Matter

Revtex, 13 pages with 8 Postscript files included, submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.62.6957

Effective pair potentials for hollow nanoparticles like the ones made from carbon (fullerenes) or metal dichalcogenides (inorganic fullerenes) consist of a hard core repulsion and a deep, but short-ranged, van der Waals attraction. We investigate them for single- and multi-walled nanoparticles and show that in both cases, in the limit of large radii the interaction range scales inversely with the radius, $R$, while the well depth scales linearly with $R$. We predict the values of the radius $R$ and the wall thickness $h$ at which the gas-liquid coexistence disappears from the phase diagram. We also discuss unusual material properties of the solid, which include a large heat of sublimation and a small surface energy.

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