Dresden 2006 – scientific programme

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MM: Metall- und Materialphysik

MM 25: Poster Session

MM 25.22: Poster

Wednesday, March 29, 2006, 15:30–17:30, P4

Preparation of porous membranes for the synthesis of nano- and micro-functional materials — •Giray Kartopu, Andre Piorra, Claus-Henning Solterbeck, and Mohammed Es-Souni — Institute for Materials and Surface Technology, University of Applied Sciences, Kiel, Germany

Nanoparticles of functional materials of the form of nano-wires and -tubules have recently attracted wide interest. There are many chemical routes existing for their synthesis. One of the most promising techniques involves the so-called ”template synthesis”[1,2], developed in the last decade, and employ a porous membrane (made of, e.g., alumina, polymer, etc.) as shape-protector and a suitable deposition technique for pore-filling, such as electrodeposition, sol-gel, CVD, etc. The choice of the to-be-produced material determines what sort of template and synthesis methods must be used. It is possible to control many properties of the final products: length, composition, shape (wire or tube), diameter, inter-distance, density, and so on.

In this work, it was aimed to prepare porous templates with controllable pore sizes and to fabricate metal and ceramic nanowires using them. By anodization of high-purity Al foils and p-type, low-resistivity Si wafers, self-standing, 10-100 µm thick templates with 1-2 µm and 20-100 nm pores, respectively, were obtained. Initial results of nano- and micro-wire deposition, such as solution-deposited TiO₂ nanowires (dia. ∼50 nm) will also be presented.

[1] J.C. Hulteen, and C.R. Martin, J. Mater. Chem., 7(7), 1075 (1997)

[2] T. Wade, and J. E. Wegrove, Eur. Phys. J. Appl. Phys. 29, 3 (2005)