Nano Archive

Silver nanowire arrays electrochemically grown into nanoporous anodic alumina templates

Riveros, G and Green, S and Cortes, A and Gomez, H and Marotti, R. E. and Dalchiele, E. A. (2006) Silver nanowire arrays electrochemically grown into nanoporous anodic alumina templates. NANOTECHNOLOGY, 17 (2). pp. 561-570.

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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 mu m, 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.

Item Type:Article
Subjects:Material Science > Nanostructured materials
ID Code:3828
Deposited By:SPI
Deposited On:26 Jan 2009 14:49
Last Modified:19 Feb 2009 15:22

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