title: Silver electrodeposition on nanostructured gold: from nanodots to nanoripples.
abstract: 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 approximately 50 nm average size and approximately 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.
authors: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina.
authors: P C
authors: PC
authors: Dos Santos Claro
authors: M
authors: M
authors: Fonticelli
authors: G
authors: G
authors: Benítez
authors: O
authors: O
authors: Azzaroni
authors: P L
authors: PL
authors: Schilardi
authors: N B
authors: NB
authors: Luque
authors: E
authors: E
authors: Leiva
authors: R C
authors: RC
authors: Salvarezza