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Open Access Nano Express

Ultra-long metal nanowire arrays on solid substrate with strong bonding

Ju Xu1, Lan Chen2, Alan Mathewson1 and Kafil M Razeeb1*

Author Affiliations

1 Tyndall National Institute, University College Cork, Cork, Lee Maltings, Dyke Parade, Cork, Ireland

2 Department of Chemistry, University College Cork, Cork, Ireland

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Nanoscale Research Letters 2011, 6:525  doi:10.1186/1556-276X-6-525

Published: 9 September 2011

Abstract

Ultra-long metal nanowire arrays with large circular area up to 25 mm in diameter were obtained by direct electrodeposition on metalized Si and glass substrates via a template-based method. Nanowires with uniform length up to 30 μm were obtained. Combining this deposition process with lithography technology, micrometre-sized patterned metal nanowire array pads were successfully fabricated on a glass substrate. Good adhesion between the patterned nanowire array pads and the substrate was confirmed using scanning acoustic microscopy characterization. A pull-off tensile test showed strong bonding between the nanowires and the substrate. Conducting atomic force microscopy (C-AFM) measurements showed that approximately 95% of the nanowires were electrically connected with the substrate, demonstrating its viability to use as high-density interconnect.

Keywords:
nanowire arrays; anodic alumina membranes; electrodeposition; nano-interconnect