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(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Anomalous packing in thin nanoparticle supercrystals

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Author(s):
Zanchet‚ D. ; Moreno‚ MS ; Ugarte‚ D.
Total Authors: 3
Document type: Journal article
Source: Physical Review Letters; v. 82, n. 26, p. 5277-5280, 1999.
Abstract

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)

FAPESP's process: 96/12550-8 - Sinthesis and characterization of nanostructure materials
Grantee:Daniela Zanchet
Support Opportunities: Scholarships in Brazil - Doctorate