Issue 86, 2014
From the journal:

RSC Advances

Copper nanowire synthesis by directed electrochemical nanowire assembly†

C. Schmädicke,‡a   M. Poetschke,‡a   L. D. Renner,ab   L. Baraban,*a   M. Bobetha  and  G. Cunibertiac  

* Corresponding authors

a Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
E-mail: larysa.baraban@nano.tu-dresden.de

b Department of Biochemistry, University of Wisconsin–Madison, 433 Babcock Drive, Madison, WI 53706, U.S.A

c Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany

Abstract

We present the growth of high aspect ratio copper nanowires with diameters of about 100 nm and a length of up to several micrometers via directed electrochemical nanowire assembly (DENA). We demonstrate that the nanowire morphology is controlled by the metal salt solution concentration and by the amplitude and frequency of the applied alternating voltage. The frequency was found to notably affect the nanowire diameter. The impact of the process parameters on the nanowire growth is discussed on the basis of the Butler–Volmer equation. The presented results for the bottom-up fabrication of copper wires are of high interest for nanosensor design, particularly for developing highly sensitive gas sensors. We suggest guidelines for the formation of copper nanowires based on experimental and theoretical considerations.

Graphical abstract: Copper nanowire synthesis by directed electrochemical nanowire assembly

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Article information

DOI
https://doi.org/10.1039/C4RA04853A
Article type
Paper
Submitted
22 May 2014
Accepted
29 Aug 2014
First published
29 Aug 2014

RSC Adv., 2014,4, 46363-46368

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Copper nanowire synthesis by directed electrochemical nanowire assembly

C. Schmädicke, M. Poetschke, L. D. Renner, L. Baraban, M. Bobeth and G. Cuniberti, RSC Adv., 2014, 4, 46363 DOI: 10.1039/C4RA04853A

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