INVESTIGADORES
MORENO Mario Sergio Jesus
artículos
Título:
Anomalous packing of thin nanoparticle supercrystals
Autor/es:
D. ZANCHET; M.S. MORENO; D. UGARTE
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 1999 vol. 82 p. 5277 - 5280
ISSN:
0031-9007
Resumen:
We report a structural study of gold nanoparticle supercrystals formed by a few layers and ofmicrometer size, where the long-range order has been stimulated by a soft thermal annealing. We have clearly identified an expansion of the first layer lying on amorphous carbon substrate and an ordered second layer sitting on twofold saddle points. The third nanoparticle layer recovers the conventional close-packed stacking. This anomalous packing has been explained by means of a simple theoretical model based on dispersional forces.
