Influence of surface pre-treatment on the pore growth of nanoporous alumina at room temperature
|Diana C. Leitão , Celia T. Sousa , Joao Ventura , Francisco Carpinteiro , M M. Amado , Joao P. Araujo , J. B. Sousa|
Departamento de Fisica and IFIMUP, Universidade do Porto (UP), Rua do Campo Alegre, 687, Porto 4169-007, Portugal
Nanoporous templates, such as anodic porous alumina, have gained much importance in the last 20 years due to their potencial industrial and technological applications for nanometric device fabrication. In fact, because the existent nano-lithographic techniques (e-beam. X-ray, focused ion beam) are expensive and have a low throughput, new assembling methods are needed for the large scale inexpensive production of nanodevices. Nanoporous anodic alumina templates, which can be readily obtained by common electrochemical processes, may be one such method for achieving the required nanodimensions. These templates can be used to obtain different nanomaterials such as nanodots, nanochannels or nanowires, showing their versatility of use. Furthermore, the fact that different ordered structures (hexagonal, square or triangular lattices) have been obtained by two step anodization and pre-patterning techniques, opens new possibilities for the applications of nanoporous anodic alumina.
Presentation: Poster at E-MRS Fall Meeting 2007, Symposium B, by Diana C. Leitão
See On-line Journal of E-MRS Fall Meeting 2007
Submitted: 2007-05-14 19:45 Revised: 2009-06-07 00:44