Rapid fabrication of self-ordered porous alumina with 10-/sub-10-nm-scale nanostructures by selenic acid anodizing

Citations Over TimeTop 10% of 2013 papers

Abstract

Anodic porous alumina has been widely investigated and used as a nanostructure template in various nanoapplications. The porous structure consists of numerous hexagonal cells perpendicular to the aluminum substrate and each cell has several tens or hundreds of nanoscale pores at its center. Because the nanomorphology of anodic porous alumina is limited by the electrolyte during anodizing, the discovery of additional electrolytes would expand the applicability of porous alumina. In this study, we report a new self-ordered nanoporous alumina formed by selenic acid (H2SeO4) anodizing. By optimizing the anodizing conditions, anodic alumina possessing 10-nm-scale pores was rapidly assembled (within 1 h) during selenic acid anodizing without any special electrochemical equipment. Novel sub-10-nm-scale spacing can also be achieved by selenic acid anodizing and metal sputter deposition. Our new nanoporous alumina can be used as a nanotemplate for various nanostructures in 10-/sub-10-nm-scale manufacturing.

Related Papers

• → Structural engineering of nanoporous anodic aluminium oxide by pulse anodization of aluminium(2008)416 cited
• → Correlation of the nanostructure of the anodic layers fabricated on Ti13Nb13Zr with the electrochemical impedance response(2015)60 cited
• → Pore diameter control in anodic titanium and aluminium oxides(2010)47 cited
• → Room Temperature Anodization Of Aluminum And The Effect Of The Electrochemical Cell In The Formation Of Porous Alumina Films From Acid And Alkaline Electrolytes(2012)23 cited
• → Fabrication of nanoporous alumina by two-step anodization and studyof their structural properties(2014)1 cited