CASIA OpenIR  > 国家专用集成电路设计工程技术研究中心
Forming efficiency of porous anodic oxide and formation mechanism of nanopores
Zhu Xu-Fei1; Han Hua2; Song Ye1; Ma Hong-Tu2; Qi Wei-Xing1; Lu Chao1; Xu Chen1
Source PublicationACTA PHYSICA SINICA
2012
Volume61Issue:22
SubtypeArticle
AbstractPorous anodic alumina (PAA) and porous anodic TiO2 nanotubes have received considerable attention because of their applications in a number of fields. The formation mechanisms of nanopores and nanotubes in these porous anodic oxides, however, have remained unclear until now. The interactions between porous structural features and current-time transients in anodizing process cannot be successfully explained. Based on the mechanism of dielectric breakdown of the compact anodic alumina (CAA), the differences and internal relations in their forming processes between CAA and PAA are contrasted in detail. From this innovative standpoint, according to the divergence of PAA and CAA in their current-time curves (or voltage-time curves), two essential causes which induce the decrease of the forming efficiency of oxide in the anodizing process, that is, the generation of the electronic current and the oxygen evolution, are presented in the paper. The evidences of the round hollows within the CAA films, show that the regularly embryo pores result from the oxygen bubbles. According to the aluminum anodizing in the mixed-electrolyte, the results show that once oxygen evolution stopping, the pore growth must be stopped, and the pores must be sealed by the above compact oxide. A novel composite film of the anodic oxide is presented. All of the above conclusively show that in the forming process of PAA, an appropriate magnitude of electronic current ensures the oxygen evolution and the pores formation, an appropriate magnitude of ionic current ensures the oxide formation and growth of pore walls.
KeywordAnodization Porous Anodic Alumina (Paa) Electronic Current Nanoporous Materials
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordHEXAGONAL PORE ARRAYS ; TIO2 NANOTUBE ARRAYS ; ALUMINUM-OXIDE ; PULSE ANODIZATION ; OXYGEN BUBBLES ; FILMS ; GROWTH ; ACID ; MORPHOLOGY ; FABRICATION
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000316732600073
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/7992
Collection国家专用集成电路设计工程技术研究中心
Affiliation1.Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Automat, Natl Engn & Technol Res Ctr ASIC Design, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhu Xu-Fei,Han Hua,Song Ye,et al. Forming efficiency of porous anodic oxide and formation mechanism of nanopores[J]. ACTA PHYSICA SINICA,2012,61(22).
APA Zhu Xu-Fei.,Han Hua.,Song Ye.,Ma Hong-Tu.,Qi Wei-Xing.,...&Xu Chen.(2012).Forming efficiency of porous anodic oxide and formation mechanism of nanopores.ACTA PHYSICA SINICA,61(22).
MLA Zhu Xu-Fei,et al."Forming efficiency of porous anodic oxide and formation mechanism of nanopores".ACTA PHYSICA SINICA 61.22(2012).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhu Xu-Fei]'s Articles
[Han Hua]'s Articles
[Song Ye]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhu Xu-Fei]'s Articles
[Han Hua]'s Articles
[Song Ye]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhu Xu-Fei]'s Articles
[Han Hua]'s Articles
[Song Ye]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.