Development of nanocomposites with active principles added as nanoemulsion
Study of magnetic properties of Pd nanoparticles and utrathin films
| Full text | |
| 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 |