Al2O3 Nanotubes Fabricated by Wet Etching of ZnO/Al2O3 Core/Shell Nanofibers

Joowon Hwang, Byungdon Min, Jong Soo Lee, Kihyun Keem, Kyoungah Cho, Man Young Sung, Moon Sook Lee, Sangsig Kim

Research output: Contribution to journalArticlepeer-review

131 Citations (Scopus)


A route to fabricate Al2O3 nanotubes with conformally uniform thickness is discussed. ZnO/Al2O3 core/shell nanofibers are prepared from the Al2O3 deposition of ZnO nanowires with atomic-layer deposition (ALD). Amorphous Al2O 3 nanotubes with uniform thickness may be fabricated by wet-etching of the ZnO core nanowires in the ZnO/Al2O3 core/shell nanofibers in H3PO4 solution at 25°C. Straight-line and wave-shaped Al2O3 nanotubes with different inner diameters are fabricated by the method, depending on the morphology of ZnO nanowires used as templates.

Original languageEnglish
Pages (from-to)422-425
Number of pages4
JournalAdvanced Materials
Issue number5
Publication statusPublished - 2004 Mar 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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