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Al 2 O 3 Nanotubes Fabricated by Wet Etching of ZnO/Al 2 O 3 Core/Shell Nanofibers
Author(s) -
Hwang J.,
Min B.,
Lee J. S.,
Keem K.,
Cho K.,
Sung M.Y.,
Lee M.S.,
Kim S.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305209
Subject(s) - materials science , etching (microfabrication) , nanowire , nanotube , nanofiber , crystallite , layer (electronics) , nanotechnology , substrate (aquarium) , core (optical fiber) , chemical engineering , composite material , carbon nanotube , metallurgy , oceanography , geology , engineering
In nanotube‐based electronics, Al 2 O 3 nanotubes will play a very important role. A method is reported that yields nanotubes with controllable, uniform wall thickness. The Figure represents the stage of the synthesis in which ZnO nanowires synthesized on a thick polycrystalline ZnO layer on a Si substrate have been coated with Al 2 O 3 and the ZnO partially etched away. When the etching is complete, Al 2 O 3 nanotubes remain.