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SELF-ORGANIZED FORMATION OF HEXAGONAL NANOPORE ARRAYS IN ANODIC ALUMINA

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SELF-ORGANIZED FORMATION OF HEXAGONAL NANOPORE ARRAYS IN ANODIC ALUMINA

ZHOU WEI-YA;TANG DONG-SHENG;LI YU-BAO;LIU ZU-QIN;ZOU XIAO-PING;WANG GANG

【期刊名称】《中国物理:英文版》 【年(卷),期】2001(010)003

【摘要】Conditions for a self-organized formation of ordered hexagonal structure in anodic alumina were investigated, using oxalic or sulphuric acid as an electrolyte. Highly-ordered nanopore arrays with pore densities of 9 × 109- 6.5 × l0l0cm-2 and high aspect ratios over 3000 were fabricated by a two-step anodization process. The array exhibits characteristics analogous to a two-dimensional polycrystalline structure of a few micrometres in size. The interporc distance can be controlled by changing the electrolyte and/or the applied voltage. The formation mechanism of ordered arrays is consistent with a previously proposed mechanical stress model, i.e., the repulsive forces between neighbonring pores atrnthe metal/oxide interface promote the formation of hexagonally ordered pores during the oxidation process. 【总页数】5页(218-222)

【关键词】anodic alumina;nanochannel array;self-organization;porous film

【作者】ZHOU WEI-YA;TANG DONG-SHENG;LI YU-BAO;LIU ZU-

SELF-ORGANIZED FORMATION OF HEXAGONAL NANOPORE ARRAYS IN ANODIC ALUMINA

SELF-ORGANIZEDFORMATIONOFHEXAGONALNANOPOREARRAYSINANODICALUMINAZHOUWEI-YA;TANGDONG-SHENG;LIYU-BAO;LIUZU-QIN;ZOUXIAO-PING;WANGGANG【期刊名称】《中国物理:英文版》【年(卷),期】2001(
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