Letter 20060

How to obtain deeper well aligned porous titanium dioxide? [China] 

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I have obtained well aligned porous titanium dioxide by using anodizing technique, but only about 300 nm depth, how to get deeper ones, for about several micrometers?

Qunliang Song
- Shanghai, P.R.China

Ed. note: please explain whether you used alkaline or acid anodizing, and what electrolyte and voltage you used. Thanks! Anodizing is a self-limiting process because the anodized film is a resistor that stops permitting passage of current at a given voltage after a certain thickness has been obtained.

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