Artículo de revista
Silver nanowire arrays electrochemically grown into nanoporous anodic alumina templates
Fecha
2006Registro en:
Nanotechnology, Volumen 17, Issue 2, 2018, Pages 561-570
09574484
10.1088/0957-4484/17/2/037
Autor
Riveros, G.
Green, S.
Cortes, A.
Gómez, H.
Marotti, R. E.
Dalchiele, E. A.
Institución
Resumen
Silver nanowire arrays with high aspect ratios have been prepared using potentiostatic electrodeposition within the confined nanochannels of a commercial porous anodic aluminium oxide template. The nucleation and growth processes are intensively studied by current versus time transients. Scanning electron microscopy results show that the nanowires have a highly anisotropic structure with diameters and lengths of 170 nm and 58 νm, respectively, which coincide with the dimensions of the template used. Structural characterization using x-ray diffraction shows that the Ag nanowires are highly crystalline, and those obtained at higher overpotentials present a very strong [220] preferred crystallographic orientation. The optical properties of the silver nanowires embedded in the alumina template show a clear edge close to 320 nm, that is an expected value for a silver-alumina composite material. © 2006 IOP Publishing Ltd.