INFIQC   05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
Silver electrodeposition on nanostructured gold: from nanodots to nanoripples
Autor/es:
P.C. DOS SANTOS CLARO; M. FONTICELLI; G. BENÍTEZ; O. AZZARONI; P. L. SCHILARDI; N.B. LUQUE; E. LEIVA; R.C. SALVAREZZA
Revista:
NANOTECHNOLOGY
Editorial:
Institute of Physics and IOP Publishing Limited
Referencias:
Año: 2006 vol. 17 p. 3428 - 3435
ISSN:
0957-4484
Resumen:
Silver nanodots and nanoripples have been grown on nanocavity-patterned
polycrystalline Au templates by controlled electrodeposition. The initial step
is the growth of a first continuous Ag monolayer followed by preferential
deposition at nanocavities. The Ag-coated nanocavities act as preferred sites
for instantaneous nucleation and growth of the three-dimensional metallic
centres. By controlling the amount of deposited Ag, dots of ¡50 nm average
size and ¡4 nm average height can be grown with spatial and size
distributions dictated by the template. The dots are in a metastable state.
Further Ag deposition drives the dot surface structure to nanoripple
formation. Results show that electrodeposition on nanopatterned electrodes
can be used to prepare a high density of nanostructures with a narrow size
distribution and spatial order.¡50 nm average
size and ¡4 nm average height can be grown with spatial and size
distributions dictated by the template. The dots are in a metastable state.
Further Ag deposition drives the dot surface structure to nanoripple
formation. Results show that electrodeposition on nanopatterned electrodes
can be used to prepare a high density of nanostructures with a narrow size
distribution and spatial order.¡4 nm average height can be grown with spatial and size
distributions dictated by the template. The dots are in a metastable state.
Further Ag deposition drives the dot surface structure to nanoripple
formation. Results show that electrodeposition on nanopatterned electrodes
can be used to prepare a high density of nanostructures with a narrow size
distribution and spatial order.