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Stabilizing High-Energy Crystal Structure in Silver Nanowires with Underpotential Electrochemistry

Singh, Amrita and Ghosh, Arindam (2008) Stabilizing High-Energy Crystal Structure in Silver Nanowires with Underpotential Electrochemistry. In: Journal of Physical Chemistry C, 112 (10). 3460 -3463.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp7117967

Abstract

We demonstrate that commonly face-centered cubic (fcc) metallic nanowires can be stabilized in hexagonal structures even when their surface energy contribution is relatively small. With a modified electrochemical growth process, we have grown purely single-crystalline 4H silver nanowires (AgNWs) of diameters as large as 100 nm within nanoporous anodic alumina and polycarbonate templates. The growth process is not limited by the/Ag Nernst equilibrium potential, and time-resolved imaging with high-resolution transmission electron microscopy (TEM) indicates a kinematically new mechanism of nanowire growth. Most importantly, our experiments aim to separate the effects of confinement and growth conditions on the crystal structure of nanoscale systems.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 04 Jun 2010 08:52
Last Modified: 19 Sep 2010 05:58
URI: http://eprints.iisc.ernet.in/id/eprint/26715

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