机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Mei, YF
Wu, XL
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Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R ChinaNanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Wu, XL
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Shao, XF
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Shao, XF
Huang, GS
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Huang, GS
Siu, GG
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Siu, GG
机构:
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[3] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
Formation mechanism of alumina nanotubes and their array was analysed on the basis of voids in both anodic porous alumina membrane and the tube walls of alumina nanotubes. Circular, crack-like, and wheel-like voids were observed and considered to be responsible for the formation of aluminian nanotubes and their array. Based on microstructural observation of individual alumina nanotubes, the morphology of the tube wall filled with the voids was experimentally determined, which will help to understand the formation mechanism of alumina nanotubes. Our observations and analyses give further information on self-organized mechanism of anodic porous alumina membrane. (C) 2003 Elsevier Science B.V. All rights reserved.