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Journal of Nanomaterials
Volume 2008 (2008), Article ID 858235, 8 pages
http://dx.doi.org/10.1155/2008/858235
Research Article

Mesoscale Compositionally Modulated Nanocrystalline Ni-Fe Electrodeposits for Nanopatterning Applications

Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, ON, Canada M5S 3E4

Received 9 February 2008; Accepted 18 May 2008

Academic Editor: Bohua Sun

Copyright © 2008 P. Egberts and G. D. Hibbard. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A considerable range of surface nanostructures can be fabricated by the selective dissolution of elements or phases from metallic alloys. Selectively etched electrodeposited multilayers may find useful application in optoelectronic and MEMS devices. One issue with electrodeposited multilayers is that the fine-scale multilayer structure can often exhibit significant waviness if the band layer spacing is on the same order of magnitude as the grain size. In the present study, the mean grain size was reduced to below 10 nm in a compositionally modulated Ni-Fe alloy. Preferential etching on the electroform cross-section resulted in highly uniform and directional surface channels. The evolution of this nanopatterned surface morphology was characterized by atomic force microscopy and directional roughness parameters were obtained.