Mechanism of guided self-organization producing quasi-monodomain porous alumina

被引：54

作者：

Choi, J

Wehrspohn, RB

Gösele, U

机构：

[1] Max Planck Inst Microstruct Phys, D-06120 Halle An Der Saale, Germany

[2] Univ Paderborn, Dept Phys, Nanophoton Mat Grp, D-33098 Paderborn, Germany

来源：

ELECTROCHIMICA ACTA | 2005年 / 50卷 / 13期

关键词：

anodic aluminum oxide (AAO); self-assembly; field-enhanced oxide dissolution; nano-imprint; triangular pores;

D O I：

10.1016/j.electacta.2004.11.004

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

It has been recently demonstrated [J. Choi, K. Nielsch, M. Reiche, R.B. Wehrspohn, U. Gosele, J. Vac. Sci. Technol. B 21 (2003) 763] that quasi-monodomain porous alumina with 300 nm interpore distance can be obtained by means of a 500 nm periodic master stamp applying the guided self-organization process. In this article, a theory based on suppression of the field-enhanced oxide dissolution at a wedge is suggested to explain the preparation of highly-ordered porous alumina with an interpore distance having 0.6 times the lattice constant of the master stamp. In addition, the occurrence of triangular pores, which is observed during the growth of pores by guided self-organization, can be explained and will be discussed in detail. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2591 / 2595

页数：5

共 21 条

[1] Fabrication of ideally ordered anodic porous alumina with 63 nm hole periodicity using sulfuric acid [J].