Regensburg 2004 – scientific programme

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O: Oberflächenphysik

O 24: Nanostrukturen II

O 24.1: Talk

Tuesday, March 9, 2004, 15:45–16:00, H38

A Method to Generate Aligned Nanowires on Various Substrates — •Rainer Adelung, O.C. Aktas, A. Biswas, R. Kunz, J. Kanzow, U. Schürmann, M. Elbahri, U. Saeed, J. Kruse, and F. Faupel — Lehrstuhl für Materialverbunde, Technische Fakultät der CAU Kiel

New methods to prepare nanowires like shown in [1] are still of substantial interest, as no general solution is found to produce nanowires in arbitrary form on arbitrary substrates. Here we introduce a method that allows us to produce aligned nanowires on almost any solid surface. The method is based on the generation of cracks in thin films as template, large sticking coefficient differences and long diffusion length. Examples will be given in which metal deposition in vacuum is used to provide the material for the nanowires. Those include magnetic nanowires on glass, gold nanowires on polyimide and platinum nanowire networks on Nafion surfaces. It will be shown how a precise control over the alignment, the form of nanowire intersections or the type of nanowire (solid or No-dqdashedNo-dq) is achieved. In addition, applications for the nanowire networks formed in this manner will be discussed.

[1] N. A. Melosh, A. Boukai, F. Diana, B. Gerardot, A. Badolato, P. M. Petroff and J. R. Heath, Science 300,112 (2003)