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(Referência obtida automaticamente do Google Scholar, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Anomalous packing in thin nanoparticle supercrystals

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Autor(es):
Zanchet‚ D. ; Moreno‚ MS ; Ugarte‚ D.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: Physical Review Letters; v. 82, n. 26, p. 5277-5280, 1999.
Resumo

We report a structural study of gold nanoparticle supercrystals formed by a few layers and of micrometer 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. (AU)

Processo FAPESP: 96/12550-8 - Synthesis and characterization of nanostructure materials
Beneficiário:Daniela Zanchet
Modalidade de apoio: Bolsas no Brasil - Doutorado