Berlin 2008 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 23: Poster session

MM 23.39: Poster

Dienstag, 26. Februar 2008, 14:45–18:00, Poster B

Tailoring the diameter of nanowires by controlled anodic oxidation and its electrical properties — •Seid Jebril, Samia Essa, Mady Elbahri, and Rainer Adelung — Functional Nanomaterials, Institute for Material Science, CAU Kiel, Kaiserstr. 2, 24143 Kiel

Resizing the diameter of the already formed nanowire has been a great challenge to achieve for the last decades. Here, we show tailoring of a nanowire by using anodic oxidation. Anodic oxidation has been used for formation of core-shell structures, protective layers, decorative or functional properties, to cite some. The polycrystalline nanowire used in this experiment was made by a method similar to what we developed earlier [1, 2]. We studied the electrical properties of the nanowire during and after the process. As a result of this potential controlled anodic oxidation, the diameter of the nanowire gets smaller and smaller as the oxide grows. Therefore, the electrons encounter dominant surface and boundary scattering due to confinement. Hence, the electronic properties change completely.

[1] R. Adelung et. al., Nature Mater. 3, 375, (2004).

[2] M. Elbahri et al., Adv. Mater. 18, 1059 (2006).