A. Carretero-Genevrier and co-workers have established a new method to generate vertical complex oxides nanostructures based on a sol-gel precursor solution and using track-etched polymers that act to buffer the substrate.  These vertical nanorods grown at mild temperature undergo a complete structural, morphological, and chemical transformation into single crystalline (LaSr)_xO_y nanopyramids upon thermal activation at 1000°C.
http://dx.doi.org/10.1002/adfm.200901971