Fabrication of in situ ultrathin anodic aluminum oxide layers for nanostructuring on silicon substrate

Bo Yan, Hoa T. M. Pham, Yue Ma, Yan Zhuang, Pasqualina M. Sarro

Research output: Contribution to journalLetterpeer-review

Abstract

The authors demonstrate a method for the fabrication of in situ ultrathin porous anodic aluminum oxide layers (aspect ration < 2:1 ⁠) on Si, which can be directly used as templates for nanodot preparation and for pattern transfer. The regular shape of the aluminum oxide pores is maintained even when the thickness of the aluminum oxide template is reduced to 50nm⁠. By using these in situ ultrathin templates as lift-off masks, the authors successfully prepared a BaxSr1-xTiO3 nanodot array on Si surface. Furthermore, these nanotemplates are employed as lithographic masks to transfer the nanopattern into the silicon substrate.
Original languageAmerican English
JournalApplied Physics Letters
Volume91
Issue number5
DOIs
StatePublished - Jul 2007
Externally publishedYes

Keywords

  • Etching
  • Materials treatment
  • Nanodots
  • Nanomaterials
  • Oxides
  • Metal oxides
  • Chemical elements
  • Electrolysis
  • Solgels
  • Semiconductors

Disciplines

  • Electrical and Computer Engineering

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