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Electrochemically replicated smooth aluminum foils for anodic alumina nanochannel arrays

Sajal Biring1,2, Kun-Tong Tsai2, Ujjal Kumar Sur2,4 and Yuh-Lin Wang2,3,4

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A fast electrochemical replication technique has been developed to fabricate large-scale ultra-smooth aluminum foils by exploiting readily available large-scale smooth silicon wafers as the masters. Since the adhesion of aluminum on silicon depends on the time of surface pretreatment in water, it is possible to either detach the replicated aluminum from the silicon master without damaging the replicated aluminum and master or integrate the aluminum film to the silicon substrate. Replicated ultra-smooth aluminum foils are used for the growth of both self-organized and lithographically guided long-range ordered arrays of anodic alumina nanochannels without any polishing pretreatment.


PACS

81.16.Be Chemical synthesis methods

81.16.Nd Nanolithography

68.35.Np Adhesion

82.45.Yz Nanostructured materials in electrochemistry

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Chemical physics and physical chemistry

Dates

Issue 1 (9 January 2008)

Received 4 September 2007, in final form 9 November 2007

Published 29 November 2007



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